Best AI Models for Function Calling
Top AI models for function calling and agentic tool use.
| # | Model | Score |
|---|---|---|
 GPT-5.4 | 93.0% | |
 Claude Opus 4.6 | 80.9% | |
LongCat-Flash-Thinking-2601 | 76.0% | |
| 4 | GPT-5.4 mini | 82.2% |
| 5 | GPT-5.4 nano | 74.5% |
| 6 |  GLM-5 | 73.6% |
| 7 |  Llama 3.1 405B Instruct | 79.2% |
| 8 |  Step-3.5-Flash | 77.6% |
| 9 | GLM-4.7 | 72.9% |
| 10 | Llama 3.3 70B Instruct | 79.9% |
| 11 | LongCat-Flash-Thinking | 85.1% |
| 12 | GLM-4.7-Flash | 60.5% |
| 13 | Claude Sonnet 4.5 | 75.8% |
| 14 |  MiniMax M2 | 79.6% |
| 15 | MiniMax M2.5 | 66.7% |
Want a detailed comparison of the leaders? → GPT-5.4 vs Claude Opus 4.6
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Ranking updated in 2026 based on official benchmarks and independent tests. See also model comparisons and the full catalog.