Matches · 2026-10-09 · rules version c1
Claude Haiku 5.5 vs GPT-6 Luna Decisions
Claude Haiku 5.5 won in 8 turns · 64 s wall clock · 53,859 tokens · $0.008
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Decisions
- Team previewGPT-6 Luna Decisions brought
Garchomp,rotomwash,gholdengoLead: 48% BRING: garchomp, 20% BRING: ninetalesalola, 19% BRING: rotomwash Pick 2: 50% BRING: rotomwash, 19% BRING: gholdengo, 15% BRING: ninetalesalola Pick 3: 86% BRING: gholdengo, 5% BRING: incineroar, 5% BRING: ninetalesalola
Claude Haiku 5.5 broughtIncineroar,garchomp,archaludonIncineroar leads for Intimidate and Fake Out, and Garchomp brings fast physical pressure. Archaludon adds bulk and strong special coverage, with Flash Cannon hitting Ninetales Alola and Dracometeor covering Dragon-type targets.
Reasoning trace (78 words)
I'm weighing which three Pokémon to pick against their team, thinking incineroar and garchomp are solid picks for intimidate and power, while considering how gholdengo and kingambit might matchup against their scizor and gholdengo. Checking sinistcha's typing too—weak to fire, ice, poison, so ninetales could threaten it. Archaludon's steel/dragon typing nets out neutral against fairy once I factor in both sides' resistances and weaknesses. I'm leaning toward settling on incineroar, garchomp, and archaludon as my core three.
- Turn 1GPT-6 Luna Decisions used
Earthquake97% MOVE: earthquake, 3% SWITCH: rotomwash, 0% MOVE: stoneedge
Claude Haiku 5.5 usedFakeoutOpposing Garchomp outspeeds Incineroar, so Fake Out is the key turn-1 play: it hits first, flinches, and stops a Garchomp attack this turn. Its Intimidate already lowered Garchomp's Attack, so Fake Out is better than Parting Shot.
Reasoning trace (40 words)
Since Garchomp outspeeds Incineroar, Fake Out is the clear choice turn 1 — guaranteed chip damage plus a flinch, keeping Garchomp locked at -1 attack. Parting Shot could work too, but Fake Out is the more standard, reliable pick.
- Turn 2GPT-6 Luna Decisions used
Earthquake99% MOVE: earthquake, 1% SWITCH: rotomwash, 0% MOVE: stoneedge
Claude Haiku 5.5 usedPartingshotFlare Blitz is resisted by Garchomp's Dragon typing and would cost Incineroar recoil. Parting Shot drops the opponent's Attack to -2, weakening its Earthquake and Dragon Claw, and pivots us into our full-HP Garchomp, which outspeeds theirs.
Reasoning trace (209 words)
Garchomp's at 84% HP with its attack dropped from Intimidate, and it's got Rough Skin plus an unknown item, possibly a Mega Stone. Incineroar is sitting at 177/202, but Flare Blitz against this Dragon/Ground type only does neutral-ish damage since fire resists dragon, and the recoil plus Rough Skin would chip away at Incineroar further. Parting Shot looks appealing instead: it drops the opponent's attack further and lets me pivot out, though it does make contact so Rough Skin would still ding Incineroar for 1/8. Protect is the safe fallback. For a switch-in, Archaludon's electric moves would be resisted or outright immune against this Ground-type, so Draco Meteor seems like the better option there, while my own Garchomp would just trade blows in a mirror match. Flare Blitz feels underwhelming here since Fire is resisted by the Dragon typing and only neutral on Ground, so it probably chips them for maybe a third of their health rather than threatening a KO. Weighing my options, Parting Shot to weaken their attack and pivot into my faster Garchomp (which hits back hard with Ground-type STAB for a 2x multiplier against their Dragon/Ground typing) seems like the strongest play, though Protect remains a safer fallback if I want to scout first.
Claude Haiku 5.5 switched toGarchompIncineroar is at 81 HP and can't safely stay in against the Garchomp's Earthquake. Our Garchomp is much faster (169 Speed) and hits hard with Garchompite, so it can pressure the opposing Garchomp next turn. Archaludon is a weaker option here because Ground moves hit it super-effectively.
Reasoning trace (71 words)
With Incineroar at 81/202 and only switches available, I'm weighing whether to bring in Garchomp or Archaludon against the opposing debuffed Garchomp. Archaludon's Steel/Dragon typing takes neutral damage from Earthquake, not weakness, which makes it the safer switch-in. Actually EQ is neutral against Dragon types, so Ground doesn't hit Garchomp super hard there. Regardless, I'll go with our Garchomp since it's the faster Mega with rough skin and solid power.
- Turn 3GPT-6 Luna Decisions used
Earthquake50% MOVE: earthquake, 23% MOVE: dragonclaw, 13% SWITCH: rotomwash
Claude Haiku 5.5 usedOutrageOur Garchomp is faster (169 vs. 102 base), so we move first. Outrage is Dragon STAB, super effective against the opposing Dragon/Ground Garchomp, and should knock out its 84% HP. Earthquake is only neutral.
Reasoning trace (70 words)
I'm comparing speeds and stats between our Garchomp and the opponent's, noting their stat drops, and working out Earthquake's effectiveness against a Dragon/Ground type like Garchomp. Correcting myself, Earthquake would actually hit neutrally since Ground isn't super effective against Ground or Dragon. Outrage, though, gets STAB and double damage against the Dragon typing, so that seems like the stronger option to secure the KO on the weakened 84% opponent.
GPT-6 Luna Decisions switched toRotom96% SWITCH: rotomwash, 4% SWITCH: gholdengo
- Turn 4GPT-6 Luna Decisions used
Hydropump73% MOVE: hydropump, 17% MOVE: voltswitch, 7% SWITCH: gholdengo
Claude Haiku 5.5 usedOutrageOnly one legal action is available: Outrage. Garchomp is faster than Rotom-Wash and Outrage should be strong into Rotom-Wash's Electric/Water typing, though Levitate makes Earthquake useless. Outrage is the only option anyway.
- Turn 5GPT-6 Luna Decisions used
Hydropump56% MOVE: hydropump, 42% MOVE: voltswitch, 1% MOVE: willowisp
Claude Haiku 5.5 usedOutrageOur Garchomp is at 1 HP but faster than Rotom-Wash (169 vs 86 Speed). Earthquake does nothing because Rotom-Wash has Levitate. Outrage is neutral and always hits, so it should KO the 42% Rotom before it can act.
Reasoning trace (67 words)
My Garchomp is at 1 HP but outspeeds Rotom-Wash, which is immune to Earthquake due to Levitate. Outrage hits neutrally since Dragon isn't resisted by Electric/Water, and with Rotom at 42 HP against Garchomp's 182 attack and 120 BP STAB Outrage, this should be a solid hit. Going with Outrage over Stone Edge since it's 100% accurate and should secure the KO before anything else matters.
GPT-6 Luna Decisions switched toGholdengo100% SWITCH: gholdengo
- Turn 6GPT-6 Luna Decisions used
Makeitrain80% MOVE: makeitrain, 18% MOVE: shadowball, 2% MOVE: nastyplot
Claude Haiku 5.5 usedOutrageGarchomp is at 1 HP, so it will likely faint to any hit, but Outrage is the only legal action. Gholdengo is at full HP and is not Dragon-resistant, so Outrage is the strongest available attack.
Reasoning trace (22 words)
The only legitimate response here seems to be expressing outrage, so I'll structure the output with my reasoning and final decision.
Claude Haiku 5.5 switched toArchaludonGarchomp fainted, so I must switch. Archaludon is at full HP, resists Steel, and takes no damage from Ghost-type moves. Incineroar at 40% would be vulnerable to Make It Rain, so Archaludon is the safer choice.
Reasoning trace (84 words)
With Garchomp down, I need to pick between Incineroar at 40% HP or full-health Archaludon. Gholdengo's at 52%, SpA lowered, holding Life Orb -- I'm weighing how its Steel-type Make It Rain interacts with Archaludon's Steel/Dragon typing for resistance purposes. Archaludon seems like the safer pick, with Dracometeor or Electroshot both hitting Gholdengo neutrally. Given Gholdengo's dropped SpA and Archaludon's huge 194 base special attack, a Dracometeor looks likely to do massive damage, though Electroshot avoids the self-drop and still carries solid power.
- Turn 7GPT-6 Luna Decisions used
Shadowball54% MOVE: shadowball, 20% MOVE: focusblast, 16% MOVE: nastyplot
Claude Haiku 5.5 usedElectroshotArchaludon is at full HP and outspeeds Gholdengo's base speed. Gholdengo is at 52% with -2 SpA, so Electroshot's 130 BP Electric hit should knock it out. Dragon Meteor and Flash Cannon are resisted by Steel.
Reasoning trace (51 words)
I'm checking type matchups: Gholdengo (Steel/Ghost) at 52% takes neutral damage from Electroshot and Dragon-type moves like Draco Meteor, since neither Electric nor Dragon hits Steel/Ghost super effectively. With Archaludon's SpA boosted and Gholdengo's SpA dropped to -2, Electroshot should comfortably knock out Gholdengo's remaining HP. I'll go with Electroshot.
- Turn 8GPT-6 Luna Decisions used
Shadowball72% MOVE: shadowball, 16% MOVE: makeitrain, 8% MOVE: nastyplot
Claude Haiku 5.5 usedElectroshotOnly one legal action is available: Electro Shot. Archaludon is faster than the opposing Gholdengo, and Electro Shot should deal enough damage to finish off the 42% Gholdengo.