AI Models with Tool Calling
Tool calling is the difference between a chatbot and an agent. Every model here can emit structured calls to your functions, but reliability varies widely, especially on nested or parallel calls, and the spec table will not tell you that. Treat this list as the shortlist of candidates, then test the ones that fit your budget against your actual tool schema.
Showing top 25 of 685 matching models · last synced 15 hours ago
Top pick right now: Gemma 4 31B IT from Google. It offers tool calling at the lowest output price in this set (N/A/Mtok).
| # | Model | Provider | Input $/Mtok | Output $/Mtok | Context | Capabilities |
|---|---|---|---|---|---|---|
| 1 | Gemma 4 31B IT | N/A | N/A | 262,144 | vision, tools, reasoning, structured output, open | |
| 2 | Gemma 4 26B A4B IT | N/A | N/A | 262,144 | vision, tools, reasoning, structured output, open | |
| 3 |
Auto Router
|
OpenRouter | N/A | N/A | 2,000,000 | vision, tools, reasoning, structured output |
| 4 | Gemma 4 E4B IT | N/A | N/A | 131,072 | vision, tools, reasoning, structured output, open | |
| 5 | Gemma 4 E2B IT | N/A | N/A | 131,072 | vision, tools, reasoning, structured output, open | |
| 6 | Tiny Aya Fire | Cohere | N/A | N/A | 8,000 | tools, open |
| 7 | Tiny Aya Earth | Cohere | N/A | N/A | 8,000 | tools, open |
| 8 | Tiny Aya Global | Cohere | N/A | N/A | 8,000 | tools, open |
| 9 | Tiny Aya Water | Cohere | N/A | N/A | 8,000 | tools, open |
| 10 | Muse Wonder | Meta | N/A | N/A | 1,048,576 | vision, tools, reasoning, structured output |
| 11 |
LFM2.5-1.2B-Thinking (free)
|
OpenRouter | Free | Free | 32,768 | tools, reasoning, structured output, open |
| 12 |
Elephant (free)
|
OpenRouter | Free | Free | 262,144 | tools, reasoning, structured output |
| 13 |
Free Models Router
|
OpenRouter | Free | Free | 200,000 | vision, tools, reasoning, structured output |
| 14 |
Trinity Large Preview
|
OpenRouter | Free | Free | 131,072 | tools, structured output, open |
| 15 |
Llama 3.3 70B Instruct (free)
|
OpenRouter | Free | Free | 131,072 | tools, open |
| 16 |
Laguna M.1 (free)
|
OpenRouter | Free | Free | 262,144 | tools, reasoning, open |
| 17 |
Laguna XS.2 (free)
|
OpenRouter | Free | Free | 262,144 | tools, reasoning, open |
| 18 |
Nemotron 3 Nano Omni (free)
|
OpenRouter | Free | Free | 256,000 | vision, tools, reasoning, open |
| 19 |
Nemotron 3 Nano 30B A3B (free)
|
OpenRouter | Free | Free | 256,000 | tools, reasoning, open |
| 20 |
Nemotron Nano 9B V2 (free)
|
OpenRouter | Free | Free | 128,000 | tools, reasoning, structured output, open |
| 21 |
Nemotron 3 Super (free)
|
OpenRouter | Free | Free | 262,144 | tools, reasoning, structured output, open |
| 22 |
Nemotron Nano 12B 2 VL (free)
|
OpenRouter | Free | Free | 128,000 | vision, tools, reasoning, open |
| 23 |
gpt-oss-20b (free)
|
OpenRouter | Free | Free | 131,072 | tools, reasoning, structured output, open |
| 24 |
gpt-oss-120b (free)
|
OpenRouter | Free | Free | 131,072 | tools, reasoning, open |
| 25 |
GLM 4.5 Air (free)
|
OpenRouter | Free | Free | 131,072 | tools, reasoning, open |
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