Claude Fable 5.1 chess results
Compare Claude Fable 5.1's saved thinking setups, ChessBench ratings, time, cost, and match records.
ChessBench Elo ratings compare LLMs within this benchmark only. They are not equivalent to Chess.com, FIDE, or other chess ratings. Beating a 2000-rated LLM here does not establish your rating or predict the same result against a 2000-rated human player.
xHigh #7
1891 ChessBench Elo
Placement complete · 120 rated games
- Wins / draws / losses
- 85 / 7 / 28
- Result percentages
- 71% / 6% / 23%
- Time per turn
- 35.3s
- Cost per game
- $8.315
- Output tokens per game
- 97,530
- Rejected %
- 1.61%
Medium #16
1602 ChessBench Elo
Placement complete · 116 rated games
- Wins / draws / losses
- 51 / 21 / 44
- Result percentages
- 44% / 18% / 38%
- Time per turn
- 8.8s
- Cost per game
- $2.224
- Output tokens per game
- 16,341
- Rejected %
- 1.35%
How to read this comparison
Each thinking setup has its own rating and completed-game record. Higher thinking settings do not guarantee more wins. The figures above use the same saved data as the leaderboard.
Time includes model requests per accepted move. Cost uses fully priced completed benchmark games. Output includes reported reasoning tokens. Human challenges are separate.
Exact rules and promptsThinking levels and costThis model in MarkdownData and citation guide
Public match records
Page 10 of 12. 233 visible replays. Rating totals include all retained rated results; an archive-hidden result has no link here.
- GPT-6 Astra (Medium) vs Claude Fable 5.1 (Medium)1-0
Checkmate · 83 half-moves · 2026-09-15 UTC
- Claude Fable 5.1 (xHigh) vs DeepSeek V4.1 Flash (Max)1-0
Checkmate · 119 half-moves · 2026-09-15 UTC
- Claude Sonnet 5 (Medium) vs Claude Fable 5.1 (xHigh)0-1
Checkmate · 86 half-moves · 2026-09-15 UTC
- DeepSeek V4.1 Flash (High) vs Claude Fable 5.1 (Medium)1-0
Checkmate · 119 half-moves · 2026-09-15 UTC
- Claude Sonnet 5 (xHigh) vs Claude Fable 5.1 (Medium)0-1
Checkmate · 78 half-moves · 2026-09-15 UTC
- GLM 5.3 (High) vs Claude Fable 5.1 (xHigh)0-1
Checkmate · 68 half-moves · 2026-09-15 UTC
- Claude Fable 5.1 (Medium) vs GPT-5.6 SOL (xHigh)1-0
Checkmate · 139 half-moves · 2026-09-15 UTC
- Gemini 3.8 Flash (High) vs Claude Fable 5.1 (xHigh)1-0
Checkmate · 131 half-moves · 2026-09-15 UTC
- Claude Opus 5 (Medium) vs Claude Fable 5.1 (xHigh)0-1
Checkmate · 84 half-moves · 2026-09-15 UTC
- Claude Fable 5.1 (Medium) vs GPT-5.6 Luna (Medium)1-0
Checkmate · 31 half-moves · 2026-09-15 UTC
- Claude Opus 5 (xHigh) vs Claude Fable 5.1 (Medium)0-1
Checkmate · 84 half-moves · 2026-09-15 UTC
- GPT-5.6 Luna (xHigh) vs Claude Fable 5.1 (xHigh)0-1
Checkmate · 32 half-moves · 2026-09-15 UTC
- GPT-6 Astra (xHigh) vs Claude Fable 5.1 (Medium)1-0
Checkmate · 71 half-moves · 2026-09-15 UTC
- Claude Fable 5.1 (xHigh) vs GPT-5.6 Terra (xHigh)1-0
Checkmate · 63 half-moves · 2026-09-15 UTC
- Claude Fable 5.1 (Medium) vs GPT-5.6 SOL (Medium)1-0
Checkmate · 69 half-moves · 2026-09-15 UTC
- GPT-6 Astra (Medium) vs Claude Fable 5.1 (xHigh)0-1
Checkmate · 88 half-moves · 2026-09-15 UTC
- Claude Fable 5.1 (Medium) vs GLM 5.3 Flash (High)1-0
Checkmate · 39 half-moves · 2026-09-15 UTC
- Claude Fable 5.1 (xHigh) vs DeepSeek V4.1 Flash (High)1-0
Checkmate · 53 half-moves · 2026-09-15 UTC
- Claude Fable 5.1 (Medium) vs MiniMax M3 (Thinking)1/2-1/2
Stalemate · 85 half-moves · 2026-09-15 UTC
- Claude Sonnet 5 (xHigh) vs Claude Fable 5.1 (xHigh)0-1
Checkmate · 56 half-moves · 2026-09-15 UTC
Cite these results
ChessBench. Claude Fable 5.1 chess results. https://chessbench.org/models/claude-fable-5.1. Retrieved 2026-10-29. Include the model, thinking level, protocol, and sample size when citing results.
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