GPT-6 Sol
Openai · released 2026-09-22 · route gpt-6-sol · Model profile
Opening gap: +527 (95%: +292 to +762). Its standard chess rating is higher. This comparison alone cannot isolate the reason.
Standard
- Rating
- 1,68495%: 1,516 to 1,851
- Record
- 13 won, 2 drawn, 9 lost of 24
- Accuracy (open positions)
- 89.2
- Accuracy (all moves)
- 91.0
- Average centipawn loss
- 46
- Blunders / mistakes / inaccuracies per 100 moves
- 4.8 / 2.9 / 5.2
- Matched Stockfish's first choice
- 39%
- In Stockfish's top three
- 65%
- Legal on the first try
- 99.2%
- Illegal / invalid
- 8 of 893 answers
- Forfeits
- 0
- Adjudicated games
- 14
- API-equivalent cost per game
- $0.854
- API-equivalent cost per move
- $0.023
- Seconds per move
- 36.2
- Model minutes per game
- 22.3
- Tokens per move (in / out)
- 14,705 / 1,514
- Reasoning tokens per move
- 1,481
- Aborted on our side (not counted)
- 0
By phase
| Phase | Moves | Accuracy | Centipawn loss | Blunders /100 | Engine match |
|---|---|---|---|---|---|
| Opening | 240 | 93.3 | 22 | 1.7 | 50% |
| Middlegame | 320 | 85.2 | 55 | 7.2 | 41% |
| Endgame | 325 | 89.2 | 55 | 4.6 | 29% |
Chess960
- Rating
- 1,15795%: 991 to 1,322
- Record
- 12 won, 1 drawn, 11 lost of 24
- Accuracy (open positions)
- 81.6
- Accuracy (all moves)
- 86.0
- Average centipawn loss
- 78
- Blunders / mistakes / inaccuracies per 100 moves
- 6.9 / 5.6 / 13.0
- Matched Stockfish's first choice
- 29%
- In Stockfish's top three
- 54%
- Legal on the first try
- 98.5%
- Illegal / invalid
- 11 of 674 answers
- Forfeits
- 0
- Adjudicated games
- 15
- API-equivalent cost per game
- $0.908
- API-equivalent cost per move
- $0.033
- Seconds per move
- 53.5
- Model minutes per game
- 24.6
- Tokens per move (in / out)
- 16,810 / 2,351
- Reasoning tokens per move
- 2,310
- Aborted on our side (not counted)
- 2
By phase
| Phase | Moves | Accuracy | Centipawn loss | Blunders /100 | Engine match |
|---|---|---|---|---|---|
| Opening | 238 | 80.5 | 79 | 8.8 | 25% |
| Middlegame | 305 | 80.4 | 82 | 6.6 | 32% |
| Endgame | 120 | 88.8 | 66 | 4.2 | 32% |
Games
Standard as blackWon vs Stockfish Skill 048 plies · adjudicated: decisive advantage · $0.399Chess960 as blackLost vs Skill 0, 25% random moves51 plies · checkmate · $1.08Standard as whiteLost vs Stockfish 190058 plies · checkmate · $0.836Chess960 as whiteLost vs Stockfish 150040 plies · checkmate · $0.628Standard as blackWon vs Stockfish 170076 plies · adjudicated: decisive advantage · $0.858Chess960 as blackWon vs Skill 0, 10% random moves34 plies · adjudicated: decisive advantage · $0.341Standard as whiteDrew vs Stockfish Skill 279 plies · threefold repetition · $0.925Standard as blackLost vs Stockfish Skill 4174 plies · adjudicated: decisive advantage · $2.26Chess960 as whiteWon vs Skill 0, 10% random moves29 plies · adjudicated: decisive advantage · $0.372Chess960 as blackLost vs Stockfish 1320106 plies · adjudicated: decisive advantage · $1.56Standard as whiteLost vs Stockfish 170082 plies · checkmate · $1.08Chess960 as whiteWon vs Skill 0, 10% random moves51 plies · adjudicated: decisive advantage · $0.571Standard as blackWon vs Stockfish Skill 044 plies · adjudicated: decisive advantage · $0.301Chess960 as blackWon vs Skill 0, 25% random moves68 plies · adjudicated: decisive advantage · $1.06Standard as whiteLost vs Stockfish 2100115 plies · adjudicated: decisive advantage · $1.26Chess960 as whiteLost vs Stockfish 150059 plies · adjudicated: decisive advantage · $1.27Standard as blackLost vs Stockfish Skill 4122 plies · adjudicated: decisive advantage · $1.65Standard as whiteWon vs Stockfish Skill 2149 plies · adjudicated: decisive advantage · $1.85Chess960 as blackWon vs Skill 0, 10% random moves48 plies · adjudicated: decisive advantage · $0.695Chess960 as whiteLost vs Skill 0, 10% random moves54 plies · checkmate · $1.23Chess960 as blackLost vs Stockfish Skill 071 plies · checkmate · $1.12Standard as blackLost vs Stockfish 190023 plies · checkmate · $0.209Standard as whiteWon vs Stockfish 170069 plies · adjudicated: decisive advantage · $0.731Chess960 as whiteWon vs Skill 0, 10% random moves65 plies · adjudicated: decisive advantage · $1.16Standard as blackWon vs Stockfish Skill 062 plies · adjudicated: decisive advantage · $0.547Standard as whiteLost vs Stockfish 210088 plies · checkmate · $1.40Chess960 as blackWon vs Skill 0, 25% random moves40 plies · adjudicated: decisive advantage · $0.468Chess960 as whiteLost vs Stockfish 150059 plies · adjudicated: decisive advantage · $1.13Standard as blackWon vs Stockfish 170044 plies · checkmate · $0.377Chess960 as blackLost vs Stockfish 132017 plies · checkmate · $0.215Standard as whiteWon vs Stockfish 150065 plies · adjudicated: decisive advantage · $0.590Chess960 as whiteWon vs Skill 0, 10% random moves85 plies · adjudicated: decisive advantage · $1.71Chess960 as blackLost vs Stockfish Skill 0116 plies · adjudicated: decisive advantage · $1.68Standard as blackLost vs Stockfish Skill 445 plies · checkmate · $0.362Standard as whiteDrew vs Stockfish 1700127 plies · threefold repetition · $1.81Chess960 as whiteWon vs Skill 0, 10% random moves59 plies · checkmate · $0.936Standard as blackWon vs Stockfish 132070 plies · adjudicated: decisive advantage · $0.789Chess960 as blackWon vs Skill 0, 25% random moves30 plies · adjudicated: decisive advantage · $0.330Chess960 as whiteDrew vs Stockfish Skill 083 plies · threefold repetition · $1.53Standard as whiteWon vs Stockfish 170051 plies · adjudicated: decisive advantage · $0.496Standard as blackWon vs Stockfish 132052 plies · adjudicated: decisive advantage · $0.583Chess960 as blackWon vs Skill 0, 10% random moves32 plies · checkmate · $0.384Standard as whiteWon vs Skill 0, 10% random moves39 plies · adjudicated: decisive advantage · $0.260Chess960 as whiteLost vs Skill 0, 10% random moves20 plies · checkmate · $0.242Standard as blackLost vs Stockfish 150049 plies · checkmate · $0.615Chess960 as blackLost vs Stockfish 150066 plies · adjudicated: decisive advantage · $1.47Standard as whiteWon vs Skill 0, 25% random moves33 plies · checkmate · $0.305Chess960 as whiteWon vs Skill 0, 25% random moves37 plies · adjudicated: decisive advantage · $0.597