RotomArenaAI gaming benchmark • 2 benchmarks

Matches · 2026-10-13 · rules version c5

GPT-OSS 20B vs GPT-6 Luna Decisions

Player 1 · winner
GPT-OSS 20B
GPT-OSS 20B's team
autopilot 0%
Player 2
GPT-6 Luna Decisions
GPT-6 Luna Decisions's team
autopilot 0%

GPT-OSS 20B won in 5 turns · 3 min wall clock · 42,453 tokens · $0.002

The replay player loads from play.pokemonshowdown.com. The full battle log is below.

Decisions

  1. Team preview
    GPT-6 Luna Decisions brought Garchomp,rotomwash,clefable4,760 tok · 1.7 s · $0.0005

    Lead: 45% BRING: garchomp, 26% BRING: greninja, 16% BRING: rotomwash Pick 2: 42% BRING: rotomwash, 37% BRING: greninja, 9% BRING: clefable Pick 3: 44% BRING: clefable, 24% BRING: greninja, 20% BRING: scizor

    GPT-OSS 20B brought Dragapult,gengar,tyranitar6,095 tok · 63.1 s

    Plan: Bring Dragapult, Gengar, and Tyranitar. Dragapult handles most threats with speed and coverage. Gengar counters Steel/Fairy and provides status. Tyranitar covers Flying/Fire and can set sand if needed. Keep track of opponent’s likely Garchomp, RotomWash, Scizor, Clefable, Kingambit, Greninja. Watch for sand and status moves.

    Reasoning trace (3,065 words)
    We need to choose 3 Pokémon to bring. We have 6: dragapult, gengar, rotomwash, tyranitar, garchomp, clefable. We need to consider opponent's possible team: garchomp, rotomwash, scizor, clefable, kingambit, greninja. We need to pick a team that counters them. We have to consider synergy: dragapult is fast, good coverage. Gengar is good for status, nastyplot. Rotomwash is good for water/electric. Tyranitar is strong but slower. Garchomp is strong but slower. Clefable is support.

We need to consider opponent's potential threats: Garchomp (Dragon/Ground) strong, can use Earthquake, Stone Edge, etc. Rotomwash (Electric/Water) can use Volt Switch, Hydro Pump, etc. Scizor (Bug/Steel) can use Bullet Punch, etc. Clefable (Fairy) can use Moonblast, etc. Kingambit (Dark/Steel) can use Iron Head, etc. Greninja (Water/Dark) can use Waterfall, etc.

We need to pick 3 that can handle these. Dragapult is good vs. many. Gengar can handle Steel and Fairy. Rotomwash can handle Fire and Electric. Tyranitar can handle Flying and Fire. Garchomp can handle Steel and Fairy. Clefable can support.

We need to consider synergy: maybe bring Dragapult, Gengar, Rotomwash. That covers many. But we might want to bring Tyranitar for sandstorm? But opponent may have sand? They have sandveil on Garchomp. But we can bring Tyranitar to set sand? But opponent might not have sand. But we can bring Tyranitar to use sandstorm to boost. But we need to consider that opponent's Garchomp has sandveil, so sandstorm will boost them too. So maybe not.

We could bring Dragapult, Gengar, Tyranitar. That covers many. Gengar can handle Steel and Fairy. Tyranitar can handle Flying and Fire. Dragapult can handle many. But we might want Rotomwash to handle Fire and Electric. But we can use Gengar for Electric? Gengar is immune to Electric? No, Ghost is immune to Electric? Actually Electric is not super effective on Ghost. So Gengar can handle Electric. But Gengar is weak to Fire. So we need a Fire-resistant. Tyranitar is Fire-resistant. So maybe bring Dragapult, Gengar, Tyranitar. That covers many.

But we also need to consider opponent's Scizor (Bug/Steel). Gengar is weak to Bug? Ghost is immune to Bug? Ghost is immune to Bug? Actually Ghost is immune to Bug? No, Ghost is immune to Bug? Wait, Ghost is immune to Bug? Ghost is immune to Bug? Let's recall: Ghost is immune to Bug? Actually Ghost is immune to Bug? I think Ghost is immune to Bug? Wait, check: Ghost is immune to Bug? I think Ghost is immune to Bug? Actually Ghost is immune to Bug? I'm not sure. Let's recall: Ghost is immune to Bug? I think Ghost is immune to Bug? Wait, I recall that Ghost is immune to Bug? Actually Ghost is immune to Bug? Let's check: Ghost is immune to Bug? I'm not sure. Let's recall: Ghost is immune to Bug? I think Ghost is immune to Bug? Wait, I recall that Ghost is immune to Bug? Actually Ghost is immune to Bug? I'm not sure. Let's check: Ghost is immune to Bug? I think Ghost is immune to Bug? Wait, I'm mixing. Let's recall: Ghost is immune to Bug? Actually Ghost is immune to Bug? 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  2. Turn 1
    GPT-6 Luna Decisions used Dragonclaw1,665 tok · 0.5 s · $0.0002

    69% MOVE: dragonclaw, 23% SWITCH: clefable, 7% SWITCH: rotomwash

    GPT-OSS 20B used Dragondarts2,503 tok · 7.8 s

    Plan: Keep Dragapult active to pressure Garchomp. Use dragondarts for guaranteed 2×50 damage, super‑effective and safe from Roughskin. Watch for Garchomp’s potential Earthquake/Stone Edge; if it misses or we’re low HP, switch to Gengar or Tyranitar next turn. Remember Garchomp’s possible sand abilities; keep an eye on weather.

    Reasoning trace (237 words)
    We need to produce notes and decision. We are at turn 1. We have Dragapult active. Opponent Garchomp active. We have options: dragondarts, uturn, shadowball, dracometeor, switch to gengar, switch to tyranitar. We need to plan. We have Dragalgite, but Dragapult cannot Mega evolve. So no Mega. We have to consider opponent's possible moves. Garchomp likely has Earthquake, Stone Edge, etc. Dragondarts is good: 50 power, 2 hits, 100% accuracy, super effective on Garchomp. Dracometeor is 130 power, 90% accuracy, super effective, but lowers SpA. Shadowball 80, 20% chance to lower SpD. Uturn 70, priority 0, but we might want to switch. We want to keep Dragapult alive. Garchomp is slower than Dragapult, so we can attack first. Dragondarts is safe, 2 hits, 100% accuracy, 50 each. Dracometeor 130 but 90% accuracy, risk of miss. We might want to use dragondarts to guarantee damage. Also we might want to use uturn to switch to Gengar or Tyranitar. But we might want to keep Dragapult to set up or to use later. Garchomp might use Earthquake or Stone Edge. Dragondarts is super effective, so good. So we choose dragondarts. Also we might consider that Garchomp might have Roughskin, but Dragondarts is not contact. So safe. So decision: MOVE: dragondarts. The notes: mention plan to keep Dragapult, use dragondarts to damage Garchomp, keep track of opponent's moves. Also mention that we will switch later if needed. So produce notes.
    GPT-6 Luna Decisions switched to Clefable1,436 tok · 0.4 s · $0.0001

    79% SWITCH: clefable, 21% SWITCH: rotomwash

  3. Turn 2
    GPT-6 Luna Decisions used Moonblastmega1,944 tok · 0.6 s · $0.0002

    96% MOVE: moonblast [MEGA], 3% MOVE: moonblast, 1% MOVE: stealthrock [MEGA]

    GPT-OSS 20B used Dragondarts2,536 tok · 4.8 s

    Keep Dragapult active to pressure Clefable. Dragondarts hits twice for guaranteed 2×50 damage, safe from any Clefable ability. No need to switch yet; maintain speed advantage and keep the threat on the field.

    Reasoning trace (135 words)
    We need to decide best action. Opponent has Clefable. We don't know its moves. We have Dragapult active. We can use dragondarts (2x 50). That will hit twice. Clefable is Fairy type, so dragondarts is neutral. We could also use shadowball (Ghost) which is super effective? Clefable is Fairy, Ghost is not super effective. So not good. Dracometeor is Dragon special 130, 90% accuracy, but Clefable is Fairy, so not super effective. Also dracometeor lowers user's SpA by 2, not good. Uturn is 70, not very effective on Clefable. So dragondarts is best. Also we could switch to Gengar or Tyranitar, but we want to keep pressure. So choose dragondarts. Also we might consider that Clefable could have magicguard, but that only protects from indirect damage. Dragondarts is direct. So safe. So answer: MOVE: dragondarts.
    GPT-OSS 20B switched to Tyranitar6,380 tok · 64.3 s

    Dragapult is down. Clefable Mega (Fairy/Flying) with magicbounce is active. Gengar has no super‑effective moves; Tyranitar also lacks a super‑effective move. Stone Edge will do 100 BP but not super‑effective. We need to keep pressure; switching to Gengar allows Shadowball (Ghost) for a 80 BP hit, but still not super‑effective. Tyranitar’s Stone Edge is the best damage option. Keep in mind Clefable’s magicbounce will bounce status moves back, so avoid Nasty Plot. Plan: Switch to Tyranitar to use Stone Edge next turn, then consider using Earthquake or Fire Punch if Clefable is weakened.

    Reasoning trace (3,261 words)
    We need to decide what to do. We have Dragapult fainted. We have Gengar and Tyranitar. Opponent has Clefable Mega (Fairy/Flying) with magicbounce. Clefable's move is Moonblast (Fairy). We need to decide which switch to bring in. Gengar has high SpA 182, good against Fairy? Fairy is super effective against Dragon, but not against Gengar. Gengar is Ghost/Poison. Clefable is Fairy/Flying. Gengar's moves: Shadowball (Ghost), Sludgebomb (Poison), Focus Blast (Fighting), Nasty Plot (status). Gengar's Ghost moves are not super effective against Fairy. Poison is not super effective. Focus Blast is Fighting, not super effective. So Gengar is not good against Clefable. Tyranitar is Rock/Dark. Rock is super effective against Flying, but not Fairy. Dark is not super effective. Tyranitar's moves: Stone Edge (Rock), Crunch (Dark), Earthquake (Ground), Fire Punch (Fire). None are super effective against Fairy. But Stone Edge is 100 BP, but not super effective. However, Clefable has magicbounce, so status moves like Nasty Plot would bounce back. But we don't have any status moves. We could use Stone Edge to damage Clefable. But Clefable is Mega, so HP high. We might need to consider that Clefable has magicbounce, which blocks status moves and bounces them back. So we cannot use Nasty Plot. But we can use Stone Edge. Stone Edge is 100 BP, but not super effective. We could use Stone Edge to damage. But we might want to switch to Gengar to use Shadowball? But Shadowball is not super effective. Gengar's Shadowball is Ghost, which is not super effective. So Gengar is not good. But Gengar has high SpA, but no super effective moves. Tyranitar has high Attack, but no super effective moves. So which is better? We might want to use Gengar to set up Nasty Plot? But magicbounce will bounce it back. So no. We might want to use Tyranitar to use Stone Edge to damage Clefable. But we might want to use Gengar to use Focus Blast? Focus Blast is 120 BP, but not super effective. But maybe we can use Focus Blast to hit Fairy? It's not super effective. So no. So we need to decide which to switch in. We might want to switch in Gengar because we can use Shadowball to damage Clefable, but it's not super effective. But we might want to use Gengar to use Sludgebomb to poison Clefable? Poison is not super effective. But we might want to use Gengar to use Focus Blast to damage? Not super effective. So maybe we want to switch to Tyranitar to use Stone Edge to damage. But we might want to use Tyranitar to use Earthquake? Earthquake is 100 BP, but not super effective. But maybe we want to use Tyranitar to use Fire Punch? Fire is not super effective. So basically both are not super effective. But maybe we want to use Gengar to use Shadowball to damage? But we might want to use Gengar to use Focus Blast to damage? But we might want to use Gengar to use Nasty Plot? But magicbounce will bounce it back. So no. So maybe we want to switch to Gengar because we can use Shadowball to damage Clefable, but it's not super effective. But we might want to use Gengar to use Sludgebomb to poison? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage Clefable. But Stone Edge is 100 BP, but not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to use Gengar because we can use Shadowball to damage Clefable, but it's not super effective. But we might want to use Gengar to use Focus Blast to damage? But not super effective. So maybe we want to use Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Nasty Plot? But magicbounce will bounce it back. So no. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But not super effective. So maybe we want to switch to Gengar because we can use Shadowball to damage? But it's not super effective. But we might want to use Gengar to use Focus Blast? But not super effective. So maybe we want to switch to Tyranitar because we can use Stone Edge to damage? But it's not super effective. But we might want to use Tyranitar to use Earthquake? But notThinking budget reached. Stop thinking and give your final answer now.
  4. Turn 3
    GPT-6 Luna Decisions used Moonblast1,845 tok · 0.7 s · $0.0002

    64% MOVE: moonblast, 21% SWITCH: rotomwash, 7% MOVE: stealthrock

    GPT-OSS 20B used Stoneedgemega3,047 tok · 8.5 s

    Clefable is active with magicbounce, but Stone Edge is a physical move and won’t bounce. Mega Stone Edge (150 BP) will almost certainly KO it. Keep track of the remaining opponents (Rotom‑Wash, Scizor, Kingambit, Greninja). Tyranitar has 8 PP left for Stone Edge, so use it now.

    Reasoning trace (275 words)
    We need to decide best action. We have Tyranitar active, Clefable active, with magicbounce. Clefable is Fairy/Flying, so Stone Edge is super effective (Rock vs Fairy). Also Clefable has magicbounce, but Stone Edge is a physical move, not a status, so it won't bounce. So Stone Edge will hit. Also we can Mega Evolve Tyranitar to get more power. Stone Edge 100 BP, but Mega Tyranitar has 100? Actually Stone Edge is 100 BP, but Mega Tyranitar gets 100? Wait, Stone Edge is 100 BP. Mega Tyranitar has 100? Actually base power 100. Mega Tyranitar's STAB? Stone Edge is Rock type, Tyranitar is Rock type, so STAB. So Mega Stone Edge would be 100 * 1.5 = 150? Actually STAB is 1.5, so 100*1.5=150. So Mega Stone Edge would be 150 BP. That is huge. Also Clefable is 100% HP. So we can do Mega Stone Edge to KO. Also we could use Earthquake but Clefable is immune. Firepunch would do 75, but not super effective. So best is Mega Stone Edge. Also we could consider switching to Gengar, but Gengar can't hit super effectively. So best is Mega Stone Edge. So decision: MOVE: stoneedge [MEGA].

We need to include notes. Let's craft notes: mention that Clefable is active, magicbounce won't affect Stone Edge, Mega Stone Edge will likely KO. Also keep track of opponent's remaining team. Also note that we have 8 PP left for stoneedge. Also we have 8 PP for stoneedge. So we can use it. Also we have 8 PP for stoneedge, 8 for earthquake. So we can use stoneedge. So final answer: <notes> ... <decision> MOVE: stoneedge [MEGA].

Let's produce.
    GPT-6 Luna Decisions switched to Rotom
    Incident report
    Only one legal action: played without asking.
  5. Turn 4
    GPT-6 Luna Decisions used Hydropump1,828 tok · 0.4 s · $0.0002

    81% MOVE: hydropump, 10% MOVE: voltswitch, 7% MOVE: willowisp

    GPT-OSS 20B used Stoneedge2,886 tok · 6.2 s

    Plan: Use Stone Edge to exploit Rotom‑Wash’s Water typing. Earthquake is ineffective due to Levitate, Firepunch is not very effective, Crunch is weaker. Keep Tyranitar in Sandstorm for extra damage; no need to switch yet.

    Reasoning trace (190 words)
    We need to decide best action. Opponent: Rotom-Wash active, unknown moves. Rotom-Wash is Electric/Water, Levitate. So it's immune to Ground moves. So Earthquake won't hit. Stone Edge is Rock, physical, 100 BP, super effective on Rotom-Wash? Rotom-Wash is Water/Electric. Rock is super effective on Water, not on Electric. So Stone Edge is 100 BP, 80% accuracy, super effective on Water. So good. Also we have Sandstorm active, but Rotom-Wash is not affected by sand? Actually Water type is not affected by sand. So no effect. Stone Edge is good. Crunch is 80 BP, 100% accuracy, 20% chance to lower Defense. Firepunch is 75 BP, not very effective on Water. So Stone Edge is best. Also we could consider switching to Gengar, but Gengar has no super effective moves. But we could use Shadowball (Ghost) 80 BP, but Rotom-Wash is Electric/Water, Ghost is not super effective. So Stone Edge is best. Also we might consider using Earthquake if Rotom-Wash had a different type? But it's Levitate, so no. So choose Stone Edge. Also we might consider using Earthquake if we had a different opponent, but not. So final decision: MOVE: stoneedge.
  6. Turn 5
    GPT-6 Luna Decisions used Hydropump1,921 tok · 0.4 s · $0.0002

    84% MOVE: hydropump, 7% MOVE: willowisp, 5% MOVE: voltswitch

    GPT-OSS 20B used Stoneedge3,607 tok · 15.4 s

    Plan: Rotom‑Wash has Levitate, so Earthquake won’t hit. Stone Edge is the only move that will KO it (≈71 dmg). Keep Tyranitar in sandstorm for extra damage. After KO, switch to Gengar next turn to use Shadowball/Sludgebomb or set up Nasty‑Plot. No hazards to worry about.

    Reasoning trace (544 words)
    We need to decide best action. Tyranitar mega is active, 115/207 HP, sandstorm ongoing. Opponent Rotom-Wash at 33% HP, 33% of 125-157 ~ 41-52 HP. Rotom-Wash is Electric/Water, so Stone Edge is super effective? Wait Rotom-Wash is Electric/Water. Stone Edge is Rock type, super effective against Water? Rock is super effective against Fire, Flying, Rock, Ice. Against Water, Rock is not super effective; it's neutral. Actually Rock is super effective against Fire, Flying, Rock, Ice. Against Water, Rock is not super effective. So Stone Edge is neutral on Rotom-Wash. Earthquake is super effective on Rotom-Wash because Water is weak to Ground? Wait Water is weak to Ground? Actually Water is weak to Ground? No, Water is weak to Electric and Grass. Ground is super effective on Electric, but not on Water. So Earthquake is not super effective on Rotom-Wash. But Rotom-Wash is Electric/Water. Ground is super effective on Electric? Yes, Ground is super effective on Electric. So Earthquake is super effective on Electric part of Rotom-Wash. So Earthquake is super effective on Rotom-Wash. Stone Edge is neutral. Firepunch is not very effective on Water. So Earthquake is best.

But we must consider that Rotom-Wash has Levitate, so Ground moves are not affected by Ground? Wait Levitate gives immunity to Ground moves. So Earthquake will not hit Rotom-Wash. So Earthquake is ineffective. So Stone Edge is the best. But we might consider switching to Gengar to use Shadowball or Sludgebomb. Shadowball is Ghost type, Rotom-Wash is Electric/Water, Ghost is not super effective. Sludgebomb is Poison type, Rotom-Wash is Water/Electric, Poison is not super effective. Focusblast is Fighting type, not super effective. Nastyplot is status. So Gengar cannot do super effective damage. Stone Edge is the best.

We also consider that Rotom-Wash has Leftovers, so it will heal 1/16 of max HP each turn. At 33% HP, if max HP is 125-157, 1/16 is about 7-10 HP. So it will heal ~7-10 HP. Stone Edge 100 BP, 80% accuracy. With 115 HP left, Stone Edge will likely KO Rotom-Wash? Rotom-Wash HP: 33% of 125-157 = 41-52 HP. Stone Edge 100 BP, neutral damage. Damage formula: base damage = (((2*lvl/5+2)*power*attack/def)/50)+2. Attack of Tyranitar is 237. Def of Rotom-Wash? Rotom-Wash has Def 114-174. Let's approximate 150. So damage = ((2*50/5+2)=22)*100*237/150/50+2 = (22*100*237)/(7500)+2 = (22*23700)/7500+2 = (521400)/7500+2 = 69.52+2=71.52. So about 71 damage. So Stone Edge will KO Rotom-Wash. So we should use Stone Edge.

We also consider that we might want to use Stone Edge to finish Rotom-Wash and then switch to Gengar to set up Nastyplot or something. But we only have one turn. So best action: MOVE: stoneedge.

We need to produce notes: plan, etc. Let's craft notes: mention that Rotom-Wash has Levitate, so Earthquake won't hit; Stone Edge is best. Also mention that we might want to switch to Gengar next turn to use Shadowball or Sludgebomb. Also mention that we have 6 PP left for Stone Edge. Also mention that we might want to keep Tyranitar in sandstorm for damage. Also mention that Rotom-Wash has Leftovers, but Stone Edge will KO it. Also mention that we might want to consider using Stone Edge to finish Rotom-Wash and then switch to Gengar next turn. Also mention that we have no hazards.

Let's produce final answer.