Matches · 2026-10-13 · rules version c5

Claude Haiku 5.5 vs GPT-6 Luna Decisions

GPT-6 Luna Decisions won in 8 turns · 58 s wall clock · 72,842 tokens · $0.009

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Decisions

1. Team preview
   GPT-6 Luna Decisions brought Rotomwash,garchomp,scizor4,769 tok · 1.6 s · $0.0005

   Lead: 74% BRING: rotomwash, 12% BRING: garchomp, 11% BRING: greninja Pick 2: 68% BRING: garchomp, 17% BRING: scizor, 8% BRING: greninja Pick 3: 37% BRING: scizor, 29% BRING: kingambit, 17% BRING: clefable

   Claude Haiku 5.5 brought Incineroar,garchomp,gholdengo3,113 tok · 4.0 s · $0.0004

   Opponent threats: Kingambit, Scizor, Garchomp, Greninja, Rotom-Wash, Clefable. Plan: lead Incineroar for Intimidate and Fake Out support. Garchomp (Mega) is the main sweeper; Gholdengo covers special attacks and Steel-type targets. Watch for Scizor and Kingambit Steel/Dark threats, and keep Garchomp away from Ground-weak damage.

   Reasoning trace (65 words)

   I need to pick three against an opponent fielding Kingambit, Scizor, and Garchomp as key threats. Incineroar and mega Garchomp look like strong picks, and I'm weighing Corviknight for its defensive utility alongside them.
   
   Actually Gholdengo fits better as a special attacker that handles Kingambit and Scizor cleanly, so I'll go with Incineroar, Garchomp, and Gholdengo, leading with Incineroar for intimidate and fake out.
   
   

2. Turn 1
   GPT-6 Luna Decisions used Hydropump1,653 tok · 0.4 s · $0.0002

   90% MOVE: hydropump, 10% MOVE: voltswitch, 0% MOVE: willowisp

   Claude Haiku 5.5 used Fakeout3,312 tok · 2.5 s · $0.0004

   Lead Incineroar (Intimidate already cut Rotom-Wash's Attack). Turn 1: Fake Out for free damage and flinch. Rotom-Wash resists Fire-type Flare Blitz, so Incineroar should use Fake Out and Parting Shot/pivot later. Garchomp (Mega) is my main sweeper; watch for Scizor and Kingambit Steel threats to it. Gholdengo handles Steel/Ghost targets. Opponent has Garchomp, Scizor, Clefable, Kingambit, Greninja left.

   Reasoning trace (31 words)

   Since Rotom-Wash has Levitate and no immunity to Fake Out, leading with Incineroar's Fake Out to flinch it while Rotom-Wash poses no Ground threat makes sense as the opening move.
   
   

3. Turn 2
   GPT-6 Luna Decisions used Hydropump1,718 tok · 2.5 s · $0.0002

   90% MOVE: hydropump, 10% MOVE: voltswitch, 0% MOVE: willowisp

   Claude Haiku 5.5 used Partingshot4,350 tok · 7.3 s · $0.0007

   Incineroar faces Rotom-Wash (Levitate, Leftovers, Atk -1 from Intimidate). Flare Blitz is resisted by Water, so I'm not attacking into it. Plan: Parting Shot to drop its Atk and SpA, then bring in Gholdengo, whose Shadow Ball and Make It Rain hit Rotom neutrally with Life Orb. Garchomp can't use Earthquake on Levitate. Watch Scizor and Kingambit for Steel and Dark threats to Garchomp and Gholdengo.

   Reasoning trace (82 words)

   Incineroar is at 91% HP with lowered attack, facing a faster Rotom-Wash that resists Flare Blitz and likely has Volt Switch or a strong electric/water move ready to punish.
   
   I'm weighing Parting Shot into Gholdengo over just staying in — the Atk/SpA drop would help offset Gholdengo's lower SpD while giving it a neutral Shadow Ball matchup against Rotom-Wash. Garchomp could also sweep later, but Gholdengo seems like the stronger immediate switch-in since Rotom's attacks are neutral or resisted against it.
   
   

   Claude Haiku 5.5 switched to Gholdengo4,048 tok · 4.3 s · $0.0005

   Incineroar is at 58/202 and is slower than Rotom-Wash, which has Levitate (immune to Earthquake), Leftovers, and Hydro Pump. Rotom's Attack is -2 and its SpA is -1. I'm switching to Gholdengo, which hits Rotom neutrally with Shadow Ball and Make It Rain and has more HP and speed to absorb Hydro Pump. Garchomp can't Earthquake Rotom. Watch for Scizor and Kingambit Steel/Dark threats to Garchomp. Incineroar can later return for Parting Shot or Fake Out once healthy, or Protect to stall Sitrus.

   Reasoning trace (38 words)

   With Incineroar low on health and outsped by Rotom-Wash, I'm weighing a switch instead—Gholdengo takes neutral damage from Rotom's moves but is vulnerable to Hydro Pump, so I'm considering whether Garchomp might be the safer option here.
   
   

4. Turn 3
   GPT-6 Luna Decisions used Hydropump1,925 tok · 0.4 s · $0.0002

   38% MOVE: hydropump, 35% MOVE: voltswitch, 19% SWITCH: garchomp

   Claude Haiku 5.5 used Shadowball4,635 tok · 5.4 s · $0.0007

   Gholdengo is in on Rotom-Wash, which has Leftovers, Levitate (immune to Earthquake) and Hydro Pump, with Attack at -2 and SpA at -1 from my earlier moves. Make It Rain is shown at 1/4x against it, so I'm using Shadow Ball (neutral, 20% SpD drop). Incineroar is at 58/202 and can Parting Shot or Fake Out later. Garchomp has Mega Garchompite but must avoid Scizor's and Kingambit's Steel/Dark pressure. Still unseen: Scizor, Clefable, Kingambit, Greninja, Garchomp.

   Reasoning trace (73 words)

   I'm checking type matchups for Make It Rain against Rotom-Wash—Steel doesn't resist Electric or Water, so it should hit at neutral effectiveness rather than the quarter damage I initially considered.
   
   Shadow Ball is neutral against Rotom-Wash and given its 80 base power plus Life Orb boost, it looks like the strongest option against Rotom's defenses, better than Thunderbolt which gets reduced to neutral due to the Water typing offsetting the Electric resistance.
   
   

5. Turn 4
   GPT-6 Luna Decisions switched to Garchomp2,049 tok · 0.4 s · $0.0002

   64% SWITCH: garchomp, 19% MOVE: hydropump, 11% MOVE: voltswitch

   Claude Haiku 5.5 used Shadowball4,462 tok · 3.7 s · $0.0005

   Gholdengo (82/164, Life Orb) should KO Rotom-Wash (38%) with Shadow Ball, which did about 64% last hit. Rotom's Hydro Pump is super effective on Gholdengo, so Gholdengo could be at risk if Rotom is faster. Afterward, Garchomp can't use Earthquake on Levitate Rotom. Opponent still has Garchomp, Scizor, Clefable, Kingambit, Greninja to come. Watch for Scizor and Kingambit Steel/Dark threats to Garchomp. Incineroar (58/202) can Parting Shot or Fake Out later.

   Reasoning trace (52 words)

   Rotom-Wash is down to 38% HP while Gholdengo sits at 82/164 holding a Life Orb, and I'm checking speed since Gholdengo should outpace Rotom here. Given that the previous Shadow Ball chunked roughly 64% of Rotom's max HP, another hit at Rotom's current 38% should be enough to finish it off.
   
   

6. Turn 5
   GPT-6 Luna Decisions used Earthquake2,114 tok · 0.5 s · $0.0002

   100% MOVE: earthquake, 0% MOVE: swordsdance, 0% MOVE: dragonclaw

   Claude Haiku 5.5 used Shadowball4,788 tok · 4.3 s · $0.0006

   Opponent Garchomp is active at 36% and Rotom-Wash is benched at 38%. Gholdengo (66/164, Life Orb, 149 speed) should KO Garchomp with Shadow Ball, which is neutral. Garchomp's speed range overlaps mine, so it may hit first. If Gholdengo survives, switch Incineroar in later to Parting Shot or Fake Out. Remaining opponent threats: Scizor, Clefable, Kingambit, Greninja (one more to come). Rotom-Wash's Hydro Pump is super effective on Gholdengo, and Earthquake can't hit Levitate Rotom. Garchomp (Mega) should avoid Steel/Dark types.

   Reasoning trace (41 words)

   I'm assessing the battle state—opposing Garchomp is low at around 36% HP while my Gholdengo, Garchomp, and Incineroar are in better shape. I'm weighing whether Shadow Ball from Gholdengo can finish off the weakened Garchomp, noting the neutral type matchup.
   
   

   Claude Haiku 5.5 switched to Garchomp4,567 tok · 5.2 s · $0.0006

   Gholdengo has fainted. Switching in full-HP Garchomp, which can Mega Evolve next turn. Opponent Garchomp is at 36%, and Earthquake is neutral against our Dragon/Ground Garchomp. Opponent Rotom-Wash (Levitate) is immune to Earthquake, so use Stone Edge or Dragon Claw on it. Remaining opponent threats: Scizor, Clefable, Kingambit, Greninja (one more to come). Avoid Steel/Dark matchups where possible. Incineroar (28.7%) can Parting Shot later.

   Reasoning trace (93 words)

   With Gholdengo down, I need to pick a replacement—Garchomp (full health, can Mega Evolve) or Incineroar at lower health. The opposing Garchomp just used Earthquake and sits at 36%, so I'm weighing whether my Garchomp can outspeed it after Mega Evolving.
   
   Checking type matchups: Earthquake hits my Dragon/Ground Garchomp neutrally, so I'm safe switching in. My Garchomp should be able to finish off the weakened opponent with Stone Edge, Dragon Claw, or EQ, and it also resists any potential Hydro Pump from a Rotom-Wash switch-in. I'll go ahead and switch to Garchomp.
   
   

7. Turn 6
   GPT-6 Luna Decisions used Dragonclaw2,224 tok · 0.5 s · $0.0002

   93% MOVE: dragonclaw, 3% SWITCH: scizor, 2% MOVE: earthquake

   Claude Haiku 5.5 used Dragonclawmega5,459 tok · 7.0 s · $0.0008

   Opponent Garchomp is at 36% and its Earthquake is revealed. My Garchomp is at full HP, so I'm Mega Evolving now and using Dragon Claw, which is super effective on Garchomp. Dragon Claw should KO. Rotom-Wash (Levitate) is immune to Earthquake, so Stone Edge or Dragon Claw is needed for it. Remaining opposing threats: Scizor, Clefable, Kingambit, Greninja (one of them). Avoid Steel/Dark matchups. Incineroar (28.7%) can Parting Shot later.

   Reasoning trace (125 words)

   Opponent's Garchomp is at 36% while mine is full HP, and I'm checking type effectiveness since it has Earthquake revealed—Ground moves are neutral against my Dragon/Ground typing, so I'm not too worried about that threat.
   
   My Dragon Claw would hit super effectively against their Garchomp (dragon vs dragon), which combined with their low HP should net a clean KO, while Stone Edge or Earthquake would just be neutral. I'm also weighing speed tiers to see who moves first, since mega evolving doesn't change Garchomp's base speed.
   
   Mega evolving now seems like a good call since it boosts attack and only costs us our one-time mega, strengthening the Dragon Claw damage enough to finish off their Garchomp. I'll go with Dragon Claw while mega evolving.
   
   

   GPT-6 Luna Decisions switched to Scizor2,001 tok · 0.7 s · $0.0002

   81% SWITCH: scizor, 19% SWITCH: rotomwash

8. Turn 7
   GPT-6 Luna Decisions used Bulletpunchmega2,508 tok · 0.6 s · $0.0003

   75% MOVE: bulletpunch [MEGA], 21% MOVE: bulletpunch, 1% MOVE: swordsdance

   Claude Haiku 5.5 used Earthquake5,172 tok · 5.8 s · $0.0008

   Garchomp Mega (36/185) outspeeds Scizor and Earthquake is super effective on Bug/Steel, so it should KO. Earthquake is the clear choice over Stone Edge (neutral) or Dragon Claw (resisted). Opponent still has Rotom-Wash (38%, Levitate, Hydro Pump, Leftovers) and Kingambit, Clefable, Greninja to come. Scizor might have Bullet Punch priority, which could threaten my low-HP Garchomp. Garchomp can't hit Rotom with Earthquake, so it needs Stone Edge or Dragon Claw for that. Incineroar (28.7%) can Parting Shot later.

   Reasoning trace (97 words)

   My Garchomp Mega is at 36/185 HP but much faster, facing a full-health Scizor. Earthquake would hit for double damage against Scizor's Bug/Steel typing, so I'm checking whether that damage with Garchomp's attack stat is enough to knock it out.
   
   Crunching the numbers against Scizor's likely defense range, the STAB and type advantage push Earthquake's damage well above Scizor's HP, so it should score the KO. Stone Edge would only be neutral against Scizor, making Earthquake clearly the better choice, and priority Bullet Punch is a risk I can't avoid anyway so I'll commit to Earthquake.
   
   

   Claude Haiku 5.5 switched to Incineroar

   Incident report

   Only one legal action: played without asking.

9. Turn 8
   GPT-6 Luna Decisions used Bulletpunch2,358 tok · 1.1 s · $0.0002

   40% MOVE: bulletpunch, 31% MOVE: uturn, 17% SWITCH: rotomwash

   Claude Haiku 5.5 used Flareblitz5,617 tok · 8.0 s · $0.0008

   Incineroar (58/202) faces Mega Scizor (100%, Technician, Bullet Punch 60 effective power, -1 Atk from Intimidate). Flare Blitz is 4x super effective and should KO. Scizor's Bullet Punch priority means it may hit first, but Incineroar should survive unless it crits. Remaining opponents: Rotom-Wash (38%, Levitate, Hydro Pump, Leftovers), Kingambit, Clefable, Greninja. Gholdengo and Garchomp are down. Parting Shot is useful later to weaken a physical attacker and switch out Incineroar.

   Reasoning trace (101 words)

   Incineroar is at 58/202 HP facing a Mega Scizor with Technician, whose attack is lowered by Intimidate; I'm noting that its Bullet Punch gets boosted to 60 power with Technician and still has priority, making it a real threat at this HP.
   
   On the flip side, Flare Blitz from Incineroar is 4x effective against Scizor's Bug/Steel typing, so with STAB it should likely one-shot it even factoring in Scizor's bulk as a mega. I'm checking whether Bullet Punch's damage after the Intimidate drop and Incineroar's decent Defense would actually finish Incineroar off, since Bullet Punch isn't super effective against Fire/Dark.