Matches · 2026-10-13 · rules version c5

Claude Opus 5.5 vs PokéChamp

Player 1

Claude Opus 5.5

Claude Opus 5.5's team

autopilot 0%

Player 2 · winner

PokéChamp

Claude Opus 5.5's team

PokéChamp won in 8 turns · 2 min wall clock · 45,633 tokens · $0.282

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

Decisions

Team preview
PokéChamp brought Garchomp,kingambit,gholdengo
Claude Opus 5.5 brought Garchomp,gholdengo,kingambit2,874 tok · 3.1 s · $0.0143
Plan: lead Garchomp (Mega available), Kingambit as late cleaner (Sucker Punch), Gholdengo scarf revenge/Trick. Watch opp Dragapult (fastest, 213), opp Gholdengo scarf. Track opp's 3 and their moves.

Turn 1

PokéChamp used Dragonclawmega

Claude Opus 5.5 used Dragonclawmega4,217 tok · 14.4 s · $0.0329

Turn 1: Mega Garchomp Dragon Claw into opp Garchomp. Mega Garchomp is slower (about 149 Speed) but has about 222 Atk and 167 Def. Kingambit is my late cleaner (Sucker Punch). Scarf Gholdengo revenges or Tricks. Watch opp Dragapult (fastest) and scarf Gholdengo. Track opp's other 2 and their moves.

Reasoning trace (106 words)

It's a mirror matchup against their Garchomp too, so megaevolving costs me speed since Mega Garchomp drops to base 92 while my opponent stays at base 102, meaning I'd end up slower even though my attack jumps to 170. Still, Dragon Claw with that boosted attack hits hard with STAB and super effective damage.

Weighing it out: if I don't mega and we speed tie, I might not even KO them and then take a big hit back, but if I mega I get enough attack and defense to likely survive their hit and knock them out after. Megaevolving looks like the stronger play here.

Turn 2
PokéChamp used Earthquake
Claude Opus 5.5 used Dragonclaw4,004 tok · 9.3 s · $0.0274
Opp is a mirror: Mega Garchomp, same 158 Speed (speed tie), Dragon Claw seen. If my Garchomp falls, Kingambit comes in and Sucker Punches the 12% Garchomp. Gholdengo (scarf, 149) is slower than Mega Garchomp. 2 opp mons still unseen. Kingambit stays the late cleaner.
Reasoning trace (95 words)
```
Both are at low HP with Garchomp mirror match at the same speed, so it's a coin-flip speed tie each turn. I could risk another Dragon Claw, or switch to Kingambit since its Sucker Punch could finish things off next turn if Garchomp attacks into it, though the opposing Dragon Claw would at least be resisted.

Actually, just going for Dragon Claw is simplest: either it wins the speed tie and KOs, or Garchomp faints and I freely bring in Kingambit to Sucker Punch the weakened opponent — both outcomes work in my favor.
```
Claude Opus 5.5 switched to Kingambit3,749 tok · 7.8 s · $0.0183
Opp is a mirror: Mega Garchomp (158 Spe, Dragon Claw/EQ) at 12%. Kingambit Sucker Punches it now (priority). Its EQ likely OHKOs Kingambit or Gholdengo, so Sucker is a must. If it uses Swords Dance, Sucker fails; then Gholdengo is a backup. 2 opp mons unseen. Kingambit stays the late cleaner, Supreme Overlord boosted.
Reasoning trace (30 words)
```
Checking if Mega Garchomp's Earthquake can one-shot Kingambit—Ground is super effective against its Dark/Steel typing, and the math works out to roughly 215 damage, enough to beat Kingambit's bulk.
```

Turn 3

PokéChamp used Earthquake

Claude Opus 5.5 used Suckerpunch3,867 tok · 9.5 s · $0.0151

Opp mirror: Mega Garchomp (158 Spe, Dragon Claw/EQ) at 12%; Sucker Punch it now. Its EQ nearly OHKOs Kingambit. 2 opp mons unseen (from Dragapult, Kingambit, Gholdengo, Rotom-Wash, Annihilape). Kingambit (Overlord +10%) is the cleaner; scarf Gholdengo revenges or Tricks. Sucker PP 8.

Reasoning trace (92 words)

Garchomp at 12% is faster, so Sucker Punch would kill it outright if it attacks. But checking the reverse scenario, Mega Garchomp's Earthquake against Kingambit's defense looks like it could nearly OHKO too, landing somewhere around 183-215 damage.

If Garchomp instead uses Swords Dance, Sucker Punch fails and it comes back at +2 to kill Kingambit — a real risk, though Kowtow Cleave wouldn't help since Kingambit is slower and would get hit first either way. Sucker Punch is still the better play, betting the bot attacks rather than sets up.

PokéChamp switched to Gholdengo

Turn 4
PokéChamp used Focusblast
Claude Opus 5.5 used Suckerpunch4,593 tok · 10.6 s · $0.0255
Opp Gholdengo (likely scarf, Focus Blast/Make It Rain/Shadow Ball/Trick, faster than Kingambit). Sucker Punch OHKOs it before Focus Blast. If they Trick, Sucker fails; then Kowtow next. Last opp mon is one of Dragapult, Kingambit, Rotom-Wash, Annihilape. Scarf Gholdengo backs up vs Dragapult or Annihilape. Sucker PP 7 left before this turn's use.
Reasoning trace (81 words)
```
The opposing Gholdengo mirrors mine exactly with scarf and the same moveset, but outspeeds me. Their Focus Blast would hit Kingambit for 4x damage, and running the numbers shows it's a clean OHKO.

On my side, Kowtow Cleave easily OHKOs their Gholdengo too, and Sucker Punch also kills if they go for an attack. Since Trick is their only non-damaging option, Sucker Punch is the safer priority play — worst case they Trick me the scarf, which isn't too bad.
```
PokéChamp switched to Kingambit

Turn 5

PokéChamp used Swordsdance

Claude Opus 5.5 used Swordsdance5,352 tok · 15.8 s · $0.0356

Opp's last mon: mirror Kingambit (Overlord +20%, likely Black Glasses, 72 Spe tie). Its Kowtow does about 30% to my Kingambit and OHKOs Gholdengo, so never switch Gholdengo in on its attack. Plan: SD, then Kowtow x2 (about 54% each at +2). If Kingambit falls, Gholdengo (scarf, faster) Focus Blasts, which OHKOs if it hits.

Reasoning trace (146 words)

The opposing Kingambit has the same stat spread, but with Supreme Overlord boosted by two fainted allies (+20%) versus my one (+10%), plus Black Glasses. We're tied at 72 speed, so I'm calculating their Kowtow Cleave damage against me factoring in the resisted hit and STAB.

Switching Gholdengo in looks tempting since Focus Blast would be a near-guaranteed OHKO, but their Kowtow Cleave does massive damage to Gholdengo's lower defense, likely killing it on the switch, so that's too risky. I'm leaning toward staying in with Kingambit and considering whether Swords Dance is worth it, since boosting to +2 lets my Kowtow Cleave hit for roughly half their health even after eating their attack first.

Sucker Punch would fail if they SD too, so SD is the safer pick. Kowtow Cleave has no real drawback and hits harder with Life Orb/Band than Iron Head would.

Turn 6

PokéChamp used Kowtowcleave

Claude Opus 5.5 used Kowtowcleave6,284 tok · 31.3 s · $0.0522

Mirror +2 Kingambit (its Overlord 20%, mine 10%). Its Kowtow about 58% to me, mine about 53% to it; speed tie. Plan: Kowtow now, then Sucker Punch (about 44%) next turn. After that it's at about 5%. When my Kingambit falls, scarf Gholdengo comes in free, outspeeds, and Make It Rain (about 34%) finishes. If it still has about 47% or more, use Focus Blast (OHKO, 70% acc).

Reasoning trace (248 words)

I'm working out the exact damage calculation for the mirror Kingambit matchup, factoring in both Overlord boosts from fainted allies, Life Orb or Black Glasses multipliers, STAB, and the resisted damage against a +2 boosted Defense at level 50.

Their Kowtow Poison hits harder than mine (~58% vs ~53%), so I'm checking if Sucker Punch alone or combined with Kowtow can secure the KO before they do, and whether a speed tie makes it a coin flip on who strikes first. I'm also considering switching to Gholdengo with a Choice Scarf and Focus Blast, but realizing that lets them land a boosted Kowtow that would OHKO it given Gholdengo's lower bulk, so I'm leaning back toward just attacking directly and calculating the odds if I move first versus second.

If their Kingambit survives chipped, I can have Gholdengo finish with Make It Rain since Focus Blast misses too often to rely on. I'm also weighing another Swords Dance to stack boosts further before committing to the kill.

Running the math on Sucker Punch versus Kowtow Cleave trades across two turns, neither line cleanly OHKOs through their 207 HP without crits or prior chip, so I need to decide whether to risk the speed tie on a mutual Kowtow Cleave exchange.

Actually, the better line is Kowtow now, then let Gholdengo clean up after—with scarf speed it outpaces and Make It Rain is a near-guaranteed finisher on whatever sliver of HP remains after the two Kowtow/Sucker Punch exchanges.

Turn 7
PokéChamp used Kowtowcleave
Claude Opus 5.5 used Suckerpunch5,063 tok · 8.9 s · $0.0255
Final mon: mirror Kingambit at +2, 55%, and its Kowtow does about 54% to me, so it KOs my Kingambit next hit. Sucker now (about 37%) leaves it near 18%. Then scarf Gholdengo, which is faster, uses Make It Rain to finish. If it's still above about 47%, use Focus Blast. If it set up instead (Sucker failed), Gholdengo still outspeeds; Focus Blast.
Reasoning trace (40 words)
```
My Kingambit is at 96/207 and their next Kowtow Cleave kills me outright, so trading with Sucker Punch for about 37% before I go down seems right, bringing them down to roughly 18% for Gholdengo to clean up after.
```
Claude Opus 5.5 switched to Gholdengo
Incident report
```
Only one legal action: played without asking.
```

Turn 8

PokéChamp used Suckerpunch

Claude Opus 5.5 used Shadowball5,630 tok · 15.7 s · $0.0357

Final turn: opposing Kingambit at 13%, +2. My scarfed Gholdengo outspeeds it. Shadow Ball (about 23%) KOs. The risk is its Sucker Punch, which OHKOs me, but the bot has only ever used Kowtow Cleave, its highest-damage move.

Reasoning trace (188 words)

Opposing Kingambit is at 13% with 72 speed, while my scarfed Gholdengo outpaces it easily at 223 effective speed. Sucker Punch would need Kingambit to predict my attack to land first, and at +2 with black glasses it could threaten a KO on Gholdengo if it connects — but Kowtow Cleave would also OHKO me regardless, so I need to weigh whether Gholdengo can move first and finish it off before that happens.

If they go for Kowtow Cleave instead, it beats my Trick since they're faster, so I'd just die that way too. Running the damage math, both Sucker Punch and Kowtow Cleave OHKO Gholdengo regardless of which boosted set they're using, and my own Make It Rain or Shadow Ball would comfortably finish off their weakened Kingambit at 13% either way.

Really the only uncertainty is whether the bot picks Sucker Punch or Kowtow Cleave - based on its past behavior favoring higher base power moves, it's likely to go with Kowtow Cleave again since it hasn't used Sucker once. Since Shadow Ball has no accuracy issues and OHKOs regardless, I'll just go with that.