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MadeByLupu@bylupu
MadeByLupu@bylupu
Results updated 2026-10-26 UTC

GPT-6 Luna chess results⁠

Compare GPT-6 Luna's saved thinking setups, ChessBench ratings, time, cost, and match records.

Full leaderboard

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 #24

1421 ChessBench Elo

Placement complete · 82 rated games

Wins / draws / losses
18 / 24 / 40
Result percentages
22% / 29% / 49%
Time per turn
29.1s
Cost per game
$0.054
Output tokens per game
57,303
Rejected %
0.39%

Medium #32

932 ChessBench Elo

Placement complete · 84 rated games

Wins / draws / losses
1 / 7 / 76
Result percentages
1% / 9% / 90%
Time per turn
3.9s
Cost per game
$0.007
Output tokens per game
795
Rejected %
0.43%

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 3 of 9. 164 visible replays. Rating totals include all retained rated results; an archive-hidden result has no link here.

  1. GPT-6 Luna (Medium) vs GPT-6.1 SOL (xHigh)0-1

    Checkmate · 38 half-moves · 2026-09-29 UTC

  2. GPT-6 Luna (xHigh) vs GPT-6.1 SOL (xHigh)0-1

    Checkmate · 86 half-moves · 2026-09-29 UTC

  3. GPT-6.1 SOL (xHigh) vs GPT-6 Luna (Medium)1-0

    Checkmate · 45 half-moves · 2026-09-29 UTC

  4. GPT-6.1 SOL (xHigh) vs GPT-6 Luna (xHigh)1-0

    Checkmate · 59 half-moves · 2026-09-29 UTC

  5. GPT-6 Luna (Medium) vs GPT-6.1 SOL (Medium)0-1

    Checkmate · 26 half-moves · 2026-09-29 UTC

  6. GPT-6 Luna (xHigh) vs GPT-6.1 SOL (Medium)1-0

    Checkmate · 129 half-moves · 2026-09-29 UTC

  7. GPT-6.1 SOL (Medium) vs GPT-6 Luna (Medium)1-0

    Checkmate · 55 half-moves · 2026-09-29 UTC

  8. GPT-6.1 SOL (Medium) vs GPT-6 Luna (xHigh)1-0

    Checkmate · 87 half-moves · 2026-09-29 UTC

  9. GPT-6 Luna (xHigh) vs Claude Sonnet 5.5 (xHigh)0-1

    Checkmate · 54 half-moves · 2026-09-28 UTC

  10. Claude Sonnet 5.5 (xHigh) vs GPT-6 Luna (Medium)1-0

    Checkmate · 41 half-moves · 2026-09-28 UTC

  11. Claude Sonnet 5.5 (xHigh) vs GPT-6 Luna (xHigh)1-0

    Checkmate · 77 half-moves · 2026-09-28 UTC

  12. GPT-6 Luna (Medium) vs Claude Sonnet 5.5 (xHigh)0-1

    Checkmate · 30 half-moves · 2026-09-28 UTC

  13. GPT-6 Luna (Medium) vs Claude Sonnet 5.5 (Medium)0-1

    Checkmate · 48 half-moves · 2026-09-28 UTC

  14. GPT-6 Luna (xHigh) vs Claude Sonnet 5.5 (Medium)0-1

    Checkmate · 48 half-moves · 2026-09-28 UTC

  15. Claude Sonnet 5.5 (Medium) vs GPT-6 Luna (Medium)1-0

    Checkmate · 43 half-moves · 2026-09-28 UTC

  16. Claude Sonnet 5.5 (Medium) vs GPT-6 Luna (xHigh)1/2-1/2

    Threefold repetition · 82 half-moves · 2026-09-28 UTC

  17. Space Bunny (Stealth) (Max) vs GPT-6 Luna (Medium)1-0

    Checkmate · 69 half-moves · 2026-09-23 UTC

  18. Space Bunny (Stealth) (Max) vs GPT-6 Luna (xHigh)1/2-1/2

    Draw at 150 total moves · 150 half-moves · 2026-09-23 UTC

  19. GPT-6 Luna (Medium) vs Space Bunny (Stealth) (Max)1/2-1/2

    Stalemate · 66 half-moves · 2026-09-23 UTC

  20. GPT-6 Luna (xHigh) vs Space Bunny (Stealth) (Max)1-0

    Checkmate · 75 half-moves · 2026-09-23 UTC

Cite these results

ChessBench. GPT-6 Luna chess results. https://chessbench.org/models/gpt-6-luna. Retrieved 2026-10-28. Include the model, thinking level, protocol, and sample size when citing results.

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