A display-only Artificial Analysis coding index.
BenchLM mirrors the published score view for AA Coding Index. GPT-5.5 leads the public snapshot at 59.1% , followed by GPT-5.4 (57.3%) and Gemini 3.1 Pro (55.5%). BenchLM does not use these results to rank models overall.
GPT-5.5
OpenAI
GPT-5.4
OpenAI
Gemini 3.1 Pro
The published AA Coding Index snapshot is tightly clustered at the top: GPT-5.5 sits at 59.1%, while the third row is only 3.6 points behind. The broader top-10 spread is 11.0 points, so the benchmark still separates strong models even when the leaders cluster.
122 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.
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.
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.
A display-only Artificial Analysis coding index.
GPT-5.5 by OpenAI currently leads with a score of 59.1% on AA Coding Index.
122 AI models have been evaluated on AA Coding Index on BenchLM.
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