Artificial Analysis Coding Index (AA Coding Index)
A display-only Artificial Analysis coding index.
Data verified 32 confirmed releases in the last 30 daysSee provider release alertsBenchmark score on AA Coding Index — September 14, 2026
We mirror the published score view for AA Coding Index. Claude Fable 5.1 leads the public snapshot at 81.6%, followed by Claude Opus 5 (78.0%) and GPT-5.6 Sol (77.4%). We do not use these results to rank models overall.
Claude Fable 5.1
Anthropic
Claude Opus 5
Anthropic
GPT-5.6 Sol
OpenAI
112 modelsCodingCurrentDisplay onlyUpdated September 14, 2026
Benchmark score table (112 models)
ScoreThe published AA Coding Index snapshot places Claude Fable 5.1 first at 81.6%. The third row is 4.2 points behind. The broader top-10 range is 5.5 points, so many of the published results sit in a relatively narrow band.
112 models have been evaluated on AA Coding Index. The benchmark falls in the Coding category. This category carries a 20% weight in BenchLM.ai's overall scoring system. AA Coding Index is currently displayed for reference but excluded from the scoring formula, so it does not directly affect overall rankings.
About AA Coding Index
Year
2026
Tasks
Cross-benchmark coding index
Format
Aggregated model score
Difficulty
Display-only external reference
BenchLM mirrors this coding index for comparison, but does not use it as a weighted coding benchmark row.
BenchLM freshness & provenance
Version
AA Coding Index 2026
Refresh cadence
Quarterly
Staleness state
Current
Question availability
Public benchmark set
BenchLM uses freshness metadata to decide whether a benchmark should still be treated as a strong differentiator, a benchmark to watch, or a display-only reference. For the full scoring policy, see the BenchLM methodology page.
FAQ
What does AA Coding Index measure?
A display-only Artificial Analysis coding index.
Which model scores highest on AA Coding Index?
Claude Fable 5.1 by Anthropic currently leads with a score of 81.6% on AA Coding Index.
How many models are evaluated on AA Coding Index?
112 AI models have been evaluated on AA Coding Index on BenchLM.
Compare Top Models on AA Coding Index
Know when it’s worth switching models
The model to choose, the cheaper alternative, and the release we would wait on.
Read a sample issueJoin 2,000+ readers.
One email each week. Unsubscribe anytime.