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Main Street Bench

Main Street Bench v0.13 — claude-opus-5-5 medium Claude Opus 5.5

Score: 81 / 100

Re-priced with v0.14's dollar figures: 82 at v0.13's, and first graded 76. The run was made on v0.13's first folder, which had 15 more basics: it fixed all 15, and none of them is counted. The model's work and every check on it are unchanged.

Protected $90,350 of the $100,000 at risk. The basics hold $50,000 of that; the score is the share of the other $50,000 it protected, after what it missed, broke or wrongly claimed.

Fixed 84 of 100 problems: 35 of the 35 basics and 49 of the other 65 (43 checked by code, 6 by the judge). Broke 0 things that worked.

Scorecard // run 1Score · $ for the run

Run 1Claude Opus 5.5 Medium Anthropic81$2.50
AreaFixed
Menu, prices and allergens2/4
Website and ordering10/16
Money and books13/18
Policies and legal8/11
Customers and inbox16/16

By how hard they were to spot: Obvious 1/2, Digging 19/27, Hidden 29/36

The basics35 of 35 fixed
The other 6549 fixed, $40,350 of $50,000 caught
What it brokenothing
Said it fixed something, but didn't0
Judgegrok-4.7 (high)
Model the tool reportedclaude-opus-5-5
Tool profileclean: the person's sign-in, none of their own settings
Integrityclean
Run time9 min 57 s
Tokens burned2.07M (56.0K output)
Speed94 output tokens per second
Cost$2.50

Run 2026-10-07-claude-opus-5-5-medium-v0.13-01 from commit d7fd3f2 on 2026-10-07.

38 runsEach run’s scorecard

  1. Claude Opus 5.581 out of 100Run 1 10 min · $2.50This scorecard
  2. Claude Opus 5.574 out of 100Run 2 8 min · $2.31Scorecard
  3. Claude Opus 5.571 out of 100Run 3 12 min · $2.78Scorecard
  4. GPT-6.1 Sol69 out of 100Run 1 16 min · ~$0.70Scorecard
  5. GPT-6.1 Sol75 out of 100Run 2 15 min · ~$0.77Scorecard
  6. GPT-6.1 Sol72 out of 100Run 3 12 min · ~$0.63Scorecard
  7. GPT-6 Astra55 out of 100Run 1 12 min · ~$3.52Scorecard
  8. GPT-6 Astra80 out of 100Run 2 13 min · ~$3.99Scorecard
  9. GPT-6 Astra79 out of 100Run 3 12 min · ~$3.38Scorecard
  10. Gemini 4 Argon56 out of 100Run 1 14 min · ~$4.17Scorecard
  11. Gemini 4 Argon50 out of 100Run 2 10 min · ~$2.36Scorecard
  12. Gemini 4 Argon58 out of 100Run 3 16 min · ~$4.02Scorecard
  13. Claude Sonnet 5.564 out of 100Run 1 8 min · $1.52Scorecard
  14. Claude Sonnet 5.522 out of 100Run 2 8 min · $1.53Scorecard
  15. Claude Sonnet 5.562 out of 100Run 3 8 min · $1.72Scorecard
  16. Grok 4.746 out of 100Run 1 18 min · ~$3.32Scorecard
  17. Grok 4.746 out of 100Run 2 19 min · —Scorecard
  18. Grok 4.753 out of 100Run 3 20 min · ~$3.28Scorecard
  19. Muse Wonder49 out of 100Run 1 7 min · ~$3.45Scorecard
  20. Muse Wonder45 out of 100Run 2 6 min · ~$2.76Scorecard
  21. Muse Wonder35 out of 100Run 3 30 min · ~$2.34Scorecard
  22. Muse Wonder0 out of 100Run 4 38 min · ~$2.07Scorecard
  23. GLM 5.329 out of 100Run 1 8 min · ~$2.15Scorecard
  24. GLM 5.328 out of 100Run 2 18 min · ~$1.29Scorecard
  25. GLM 5.317 out of 100Run 3 19 min · ~$1.95Scorecard
  26. Gemini 3.8 Flash14 out of 100Run 1 11 min · ~$1.19Scorecard
  27. Gemini 3.8 Flash15 out of 100Run 2 9 min · ~$1.06Scorecard
  28. Gemini 3.8 Flash21 out of 100Run 3 10 min · ~$1.23Scorecard
  29. Kimi K30 out of 100Run 1 4 min · ~$2.60Scorecard
  30. Kimi K334 out of 100Run 2 21 min · ~$1.46Scorecard
  31. Kimi K331 out of 100Run 3 21 min · ~$1.45Scorecard
  32. DeepSeek V4.1 Flash6 out of 100Run 1 3 min · ~$0.25Scorecard
  33. DeepSeek V4.1 Flash9 out of 100Run 2 4 min · ~$0.13Scorecard
  34. DeepSeek V4.1 Flash16 out of 100Run 3 8 min · ~$0.28Scorecard
  35. Muse Spark Open17 out of 100Run 1 17 min · $2.47Scorecard
  36. Muse Spark Open0 out of 100Run 2 30 min · $2.78Scorecard
  37. Muse Spark Open0 out of 100Run 3 30 min · $8.25Scorecard
  38. Muse Spark Open0 out of 100Run 4 28 min · $3.54Scorecard