Leaderboard
By model and setting
Each model and reasoning setting appears once. If a model produced more than one player program for this game, the row stands for all of them: Programs counts the working attempts out of the counted attempts, Score and Raw rating average the programs (weighted by attempts; the small range is the lowest and highest program rating), and the combined record adds up their matches. Score is relative within this game (0–100). Scores here are working-program strength: failed generation attempts are left out and count as 0 only in a model's headline score.
| Rank | Model | Reasoning | Score | Programs | Raw rating | Combined record (W / D / L) |
|---|---|---|---|---|---|---|
| 1 |  GPT-6.1 Sol | XHigh | 98.2 | 1 working of 1 attempt | 2467.6 | 486 / 1 / 7 |
| 2 | GPT-6 Astra | XHigh | 97.7 | 1 working of 1 attempt | 2409.5 | 479 / 9 / 6 |
| 3 |  Claude Opus 5.5 | XHigh | 97.1 | 1 working of 1 attempt | 2353.4 | 479 / 2 / 13 |
| 4 | GPT-6.1 Sol | Medium | 96.6 | 1 working of 1 attempt | 2312.1 | 475 / 4 / 15 |
| 5 |  Pareto 26.10 | Provider | 96.4 | 1 working of 1 attempt | 2299.4 | 475 / 2 / 17 |
| 6 | Claude Fable 5.1 | XHigh | 95.4 | 2 working of 2 attempts | 2231.5 program range 2226–2237 | 937 / 6 / 45 |
| 7 | Claude Sonnet 5.5 | XHigh | 95.1 | 1 working of 1 attempt | 2211.4 | 468 / 0 / 26 |
| 8 | GPT-6 Astra | Medium | 94.8 | 1 working of 1 attempt | 2197.0 | 464 / 5 / 25 |
| 9 | Claude Opus 5 | XHigh | 94.8 | 4 | 2195.5 | 1856 / 18 / 102 |
| 10 | GPT-6 Sol | XHigh | 94.4 | 1 working of 1 attempt | 2174.1 | 462 / 4 / 28 |
| 11 | Pareto 26.10 Preview | Provider | 93.8 | 1 working of 1 attempt | 2144.3 | 458 / 5 / 31 |
| 12 | Claude Fable 5.1 | Low | 93.3 | 1 working of 1 attempt | 2120.5 | 456 / 3 / 35 |
| 13 | Claude Opus 5.5 | Medium | 92.6 | 1 working of 1 attempt | 2090.9 | 442 / 23 / 29 |
| 14 | Claude Fable 5.1 | Medium | 92.3 | 1 working of 1 attempt | 2080.3 | 447 / 10 / 37 |
| 15 |  Gemini 4 Argon | High | 92.3 | 1 working of 1 attempt | 2080.3 | 430 / 44 / 20 |
| 16 |  Kimi K3.1 Pro | Low | 88.8 | 1 working of 1 attempt | 1959.4 | 429 / 5 / 60 |
| 17 | Kimi K3.1 Pro | High | 88.7 | 1 working of 1 attempt | 1957.7 | 6 / 0 / 0 |
| 18 |  Grok 4.7 | XHigh | 88.0 | 1 working of 1 attempt | 1937.3 | 385 / 84 / 25 |
| 19 | Kimi K3.1 Pro | Max | 87.3 | 1 working of 1 attempt | 1918.7 | 392 / 62 / 40 |
| 20 | Claude Fable 5 | XHigh | 86.9 | 1 working of 1 attempt | 1907.5 | 395 / 51 / 48 |
| 21 | Claude Opus 5 | Medium | 86.7 | 4 | 1903.2 | 1662 / 32 / 282 |
| 22 | GPT-6.1 Sol | Low | 86.0 | 1 working of 1 attempt | 1886.0 | 401 / 29 / 64 |
| 23 |  MiMo-V2.6-Pro | Enabled | 85.9 | 1 working of 1 attempt | 1884.0 | 414 / 2 / 78 |
| 24 | Gemini 4 Argon | Low | 85.8 | 1 working of 1 attempt | 1880.2 | 404 / 21 / 70 |
| 25 |  GLM-5.3 FlashX | Max | 84.9 | 1 working of 1 attempt | 1859.8 | 406 / 6 / 82 |
Underlying results
Individual player programs
Each row is one accepted player program for GB2-03: Shogi; a model can have more than one. Score is the 0–100 result in this game, and its rating and W / D / L record show how it played. Scores are working-program strength: failed generation attempts have no row and count only in a model's headline score.
249 player programs.
| Model | Reasoning | Status | Score | Rating | W / D / L | Matches | Opponents | Notes | Generated |
|---|---|---|---|---|---|---|---|---|---|
GPT-6.1 SolE-27bd4aa164eef135 | XHigh | Rated Interval validated | 98.2 | 2468 | 486 / 1 / 7 | 494 / 494 | 247 | — | 2026-10-01First try |
GPT-6 AstraE-18e6aa627f4b1222 | XHigh | Rated Interval validated | 97.7 | 2409 | 479 / 9 / 6 | 494 / 494 | 247 | — | 2026-09-05First try |
Claude Opus 5.5E-0ac738bb34b1e7c8 | XHigh | Rated Interval validated | 97.1 | 2353 | 479 / 2 / 13 | 494 / 494 | 247 | — | 2026-09-22First try |
GPT-6.1 SolE-fb177ebd31849b47 | Medium | Rated Interval validated | 96.6 | 2312 | 475 / 4 / 15 | 494 / 494 | 247 | — | 2026-10-01First try |
Pareto 26.10E-3f0521308d4debcb | Provider | Rated Interval validated | 96.4 | 2299 | 475 / 2 / 17 | 494 / 494 | 247 | — | 2026-10-21First try |
Claude Fable 5.1E-b53393b05159fc95 | XHigh | Rated Interval validated | 95.5 | 2237 | 469 / 3 / 22 | 494 / 494 | 247 | — | 2026-09-08First try |
Claude Fable 5.1E-9f7c077c66189b69 | XHigh | Rated Interval validated | 95.3 | 2226 | 468 / 3 / 23 | 494 / 494 | 247 | — | 2026-09-03First try |
Claude Opus 5E-7caa6c5081d57676 | XHigh | Rated Interval validated rev d852e286 | 95.2 | 2221 | 466 / 6 / 22 | 494 / 494 | 247 | — | 2026-07-25First try |
Claude Sonnet 5.5E-4a7793fa8a4833be | XHigh | Rated Interval validated | 95.1 | 2211 | 468 / 0 / 26 | 494 / 494 | 247 | — | 2026-09-30First try |
GPT-6 AstraE-4633465f951f8cae | Medium | Rated Interval validated | 94.8 | 2197 | 464 / 5 / 25 | 494 / 494 | 247 | — | 2026-09-05First try |
GPT-6 SolE-049711eb0d28bfa8 | XHigh | Rated Interval validated | 94.4 | 2174 | 462 / 4 / 28 | 494 / 494 | 247 | — | 2026-09-22First try |
Claude Opus 5E-38759212c025e8eb | XHigh | Rated Interval validated rev d852e286 | 94.3 | 2170 | 462 / 3 / 29 | 494 / 494 | 247 | — | 2026-07-25First try |
Pareto 26.10 PreviewE-74f4f6139b879936 | Provider | Rated Interval validated | 93.8 | 2144 | 458 / 5 / 31 | 494 / 494 | 247 | — | 2026-10-09First try |
Claude Fable 5.1E-529bc866427d95d5 | Low | Rated Interval validated | 93.3 | 2121 | 456 / 3 / 35 | 494 / 494 | 247 | — | 2026-09-03First try |
Claude Opus 5.5E-8b93ed37e8717e57 | Medium | Rated Interval validated | 92.6 | 2091 | 442 / 23 / 29 | 494 / 494 | 247 | — | 2026-09-22First try |
Claude Fable 5.1E-5c6dabbae6a319cf | Medium | Rated Interval validated | 92.3 | 2080 | 447 / 10 / 37 | 494 / 494 | 247 | — | 2026-09-03First try |
Gemini 4 ArgonE-674c6806d0094ec2 | High | Rated Interval validated | 92.3 | 2080 | 430 / 44 / 20 | 494 / 494 | 247 | — | 2026-10-21Repaired |
Kimi K3.1 ProE-16979a0a53d883fe | Low | Rated Interval validated | 88.8 | 1959 | 429 / 5 / 60 | 494 / 494 | 247 | — | 2026-10-24First try |
Kimi K3.1 ProE-21a068da70788af2 | High | Limited data | 88.7 | 1958 | 6 / 0 / 0 | 6 / 36 | 6 | 30 faults | 2026-10-24First try |
Grok 4.7E-7127b4821bb35d1f | XHigh | Rated Interval validated | 88.0 | 1937 | 385 / 84 / 25 | 494 / 494 | 247 | — | 2026-09-30First try |
Kimi K3.1 ProE-de0460316cadfcbc | Max | Rated Interval validated | 87.3 | 1919 | 392 / 62 / 40 | 494 / 494 | 247 | — | 2026-10-24First try |
Ox AlphaE-82c718cb6269d828 | Max | Rated Interval validated | 87.3 | 1919 | 422 / 2 / 70 | 494 / 494 | 247 | — | 2026-08-22Repaired |
Claude Opus 5E-d8babc5495b1a188 | Medium | Rated Interval validated | 87.0 | 1910 | 416 / 10 / 68 | 494 / 494 | 247 | — | 2026-07-25First try |
Claude Fable 5E-54089f474d2eb1af | XHigh | Rated Interval validated | 86.9 | 1907 | 395 / 51 / 48 | 494 / 494 | 247 | — | 2026-09-03First try |
Claude Opus 5E-bd02f4c2907d0a7c | Medium | Rated Interval validated | 86.4 | 1897 | 415 / 6 / 73 | 494 / 494 | 247 | — | 2026-07-25First try |