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Best LLM for Documentation from Code

Ranked models for generating docstrings and technical docs that match code behavior.

#1 Recommendation

gpt-4.1-20250414

Strong on Galileo Agent Leaderboard v2 Avg AC (100%) and OpenVLM OCRBench Official ocrbench_score_pct (88%)

external/openai/gpt-4-1-20250414

19.1%

Score

30.1%

Confidence

23

Evidence

Runners-up:#2 gemini-3-pro-preview (16.8%)#3 gemini-2.5-pro (16.2%)#4 deepseek/deepseek-r1 (15.7%)

Ranked Models

30

Evidence Quality

79%

Scoring

Benchmark-backed

Top Signal

Galileo Agent Leaderboard v2: Avg AC

All Ranked Models

Max params:
Min confidence:
30 of 30
RankModelScore
#1gpt-4.1-20250414

Strong on Galileo Agent Leaderboard v2 Avg AC (100%) and OpenVLM OCRBench Official ocrbench_score_pct (88%)

19.1%
#2gemini-3-pro-preview

Strong on Vals SWE-bench overall_accuracy_pct (88%) and Vals LiveCodeBench overall_accuracy_pct (97%)

16.8%
#3gemini-2.5-pro

Strong on LEXam Leaderboard average_score_pct (89%) and Galileo Agent Leaderboard v2 Avg AC (59%)

16.2%
#6deepseek/deepseek-r1
15.7%
#7gpt-4.1-mini-20250414
15.4%
#8gpt-4o
15.4%
#11gpt-4o-2024-05-13
13.6%
#13gpt-5-2025-08-07
13.5%
#14google/gemini-3.1-pro-preview
13.2%
#15Grok-4-0709
13.0%
#17openai/gpt-5.4-2026-03-05
12.4%
#18claude-sonnet-4-20250514
12.2%
#19anthropic/claude-sonnet-4.6
12.1%
#20z-ai/glm-4.7
12.0%
#21anthropic/claude-opus-4-6-thinking
11.9%
#22claude-opus-4-5-20251101
11.7%
#23gemini-3-flash-preview
11.6%
#24minimax/minimax-m2.1
11.5%
#25gpt-5.2-2025-12-11
11.5%
#26gpt-5.1-2025-11-13
11.5%
#27anthropic/claude-opus-4-5-20251101-thinking
11.4%
#28Kimi K2 Thinking
11.3%
#31gpt-5-mini-2025-08-07
10.8%
#33gemini-2.5-flash
10.6%
#35kimi/kimi-k2.5-thinking
10.3%
#37anthropic/claude-sonnet-4-5-20250929-thinking
10.0%
#41gpt-4o-2024-08-06
9.7%
#47zai/glm-5-thinking
9.3%
#48qwen-2.5-72b-instruct
9.3%
#50xai-org/grok-4-fast-reasoning
9.0%

Head-to-Head: #1 vs #2

#1

Top Pick

gpt-4.1-20250414

Strong on Galileo Agent Leaderboard v2 Avg AC (100%) and OpenVLM OCRBench Official ocrbench_score_pct (88%)

19.1%

Conf 30.1%

#2

gemini-3-pro-preview

Strong on Vals SWE-bench overall_accuracy_pct (88%) and Vals LiveCodeBench overall_accuracy_pct (97%)

16.8%

Conf 20.8%

Full Comparison with Benchmark Evidence →
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Best LLM for Documentation from Code (2026) | BasedAGI