Noometry

Coding benchmark

MirrorCode leaderboard

As of October 2026, Claude Opus 5.5 has the highest published MirrorCode score on Noometry at 77.4%, out of 9 models with results.

Last verified

About MirrorCode

A description with primary sources is being prepared for this benchmark.

Category
Coding
Introduced
2026
Unit
Percent (random guessing ≈ 0%)
Official site
epoch.ai

Top 9 models

  1. Claude Opus 5.5 77.4%
  2. Claude Fable 5.1 73.3%
  3. Claude Fable 5 63.9%
  4. GPT-6 Astra 46.7%
  5. Claude Opus 4.7 31.1%
  6. GPT-5.6 Sol 20%
  7. GPT-5.4 15.6%
  8. GPT-5.5 10%
  9. Gemini 3.1 Pro Preview 8.9%

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All results

#ModelProviderScoreSettingSourceDate
1Claude Opus 5.5 Anthropic77.4%maxEpoch AI2026-09-22
2Claude Fable 5.1 Anthropic73.3%highEpoch AI2026-09-10
3Claude Fable 5 Anthropic63.9%highEpoch AI2026-08-10
4GPT-6 Astra OpenAI46.7%highEpoch AI2026-08-30
5Claude Opus 4.7 Anthropic31.1%highEpoch AI2026-08-12
6GPT-5.6 Sol OpenAI20%highEpoch AI2026-08-10
7GPT-5.4 OpenAI15.6%highEpoch AI2026-08-10
8GPT-5.5 OpenAI10%highEpoch AI2026-08-10
9Gemini 3.1 Pro Preview Google8.9%highEpoch AI2026-08-10

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Frequently asked questions

Which model has the highest MirrorCode score?

As of October 2026, Claude Opus 5.5 has the highest published MirrorCode score on Noometry at 77.4%, out of 9 models with results.