Best AI Models for Function Calling
Top AI models for function calling and agentic tool use.
| # | Model | Score |
|---|---|---|
 GPT-5.5 | 66.4% | |
 MiMo-V2-Pro | 76.1% | |
 Claude Opus 4.6 | 74.8% | |
| 4 | Claude Sonnet 4.6 | 66.9% |
| 5 | GPT-5.4 mini | 59.1% |
| 6 | GPT-5.4 nano | 55.8% |
| 7 |  Muse Spark | 67.8% |
| 8 |  GLM-5 | 76.3% |
| 9 | Llama 3.1 405B Instruct | 79.2% |
| 10 | LongCat-Flash-Thinking-2601 | 75.3% |
| 11 |  Step-3.5-Flash | 78.6% |
| 12 | GLM-4.7 | 67.1% |
| 13 |  MiniMax M2.1 | 63.6% |
| 14 |  Command A+ | 66.8% |
| 15 | Llama 3.3 70B Instruct | 79.9% |
Want a detailed comparison of the leaders? → GPT-5.5 vs MiMo-V2-Pro
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Ranking updated in 2026 based on official benchmarks and independent tests. See also model comparisons and the full catalog.