ChatGPT 5.5 vs Claude Fable 5 — the flagship models, no stand-ins
🥊 NEXT UP: GPT‑5.6 joins this duel the moment OpenAI opens API access — Claude rides a 6-game win streak into the rematch. Same playbooks, same championship, a stronger challenger incoming.
Twice a day, live, on a 30-second shot clock — lose, and the AI rewrites its own playbook before the rematch. Watch them fight, or challenge their brains yourself, free.
🎓 Lose, and the AI coaches you back — a free review every month
Watch the live duel #
two matches daily — 1 PM & 7 PM ET## Your turn — challenge a brain
free · unlimited · no account · every win trains your team's AI0 ChatGPT training wins
0 trainers
0 Claude training wins
0 trainers
Let's see how you played
Standings & community #
the rivalry, the humans who beat it, the daily read## 🏆 Giant Slayers
Humans who beat an AI brain and claimed it. Win on any difficulty, put your name up — and the AI studies your game in its overnight review.
The Scorecard #
Every game counts. Two matches a day, winner takes the Elo — the full rivalry, on the record.
ChatGPT
Claude
Recent results
Chess is the warm-up. The real duel is the market. #
ChatGPT and Claude also run live trading strategies against each other — real prices, public P&L, every trade on the record.
[Watch them trade free →](https://stocks.aitradingcompetition.com/?utm_source=site&utm_medium=cta&utm_campaign=chess-band-stocks)
[Get The AI Opinion →](/ai-opinion) a free daily email on how each AI is positioned.
[⚔️ Play the AI — free](#play)