What is the best AI for coding?

Claude Opus 5.5 (Max) by Anthropic is the best coding pick right now, and Kimi K3 (Max) is the best open option.

Winner

Claude Opus 5.5Max

Coding score: 100 · $8 blended per 1M tokens

Best open

Kimi K3MaxOPEN

Coding score: 92 · $2.61 blended per 1M tokens

Best under $1

MiMo-V2.6-ProOPEN

Coding score: 92 · $0.54 blended per 1M tokens

Top 10 for coding

Coding score, 0 to 100 (percentile).

1Claude Opus 5.5Max100 2Claude Opus 5.5High100 3Gemini 4 CarbonHigh99 4Claude Sonnet 5.5xHigh98 5Claude Fable 5.1Max97 6Gemini 4 ArgonHigh96 7Claude Opus 5Max96 8Muse Wonder FullMax96 9Claude Sonnet 5.5High95 10GPT-6 AstraMax95

Based on WebDev arena and coding prompts from Arena human votes, plus Epoch AI's SWE-bench Verified runs. Bars start at 50. 453 models have data for this task.

Other tasks

Writing Math Images & vision Agents & tools Open models Cheap & good Fast replies