Cheapest AI models with tool calling
Models that support function/tool calls — the basis for agents.
Updated Oct 21, 2026 · 40 models
| # | Model | Input / 1M | Output / 1M | Context | Capabilities |
|---|---|---|---|---|---|
| 1 | Mistral Nemo Mistral AI | $0.029 | $0.03 | 131K | toolsJSONopen weights |
| 2 | Ling 3.0 Flash inclusionAI | $0.021 | $0.063 | 262K | toolsreasoningJSONopen weights |
| 3 | gpt-oss-20b OpenAI | $0.018 | $0.09 | 131K | toolsreasoningJSONopen weights |
| 4 | gpt-oss-20b (batch) OpenAI | $0.024 | $0.112 | 131K | toolsreasoningJSONopen weights |
| 5 | Qwen3.7 Flash Qwen | $0.03 | $0.13 | 1M | visiontoolsreasoningJSON |
| 6 | gpt-oss-120b (batch) OpenAI | $0.03 | $0.136 | 131K | toolsreasoningJSONopen weights |
| 7 | Llama 3.1 8B Instruct Meta Llama | $0.05 | $0.08 | 131K | toolsJSONopen weights |
| 8 | GLM Flash Latest ~Z AI | $0.041 | $0.12 | 1.05M | visiontoolsreasoningJSON |
| 9 | GLM 5.3 Flash Z.ai | $0.041 | $0.12 | 1.05M | visiontoolsreasoningJSONopen weights |
| 10 | Nova Micro 1.0 Amazon | $0.035 | $0.14 | 128K | tools |
| 11 | Mercury 2.5 Inception | $0.04 | $0.15 | 260K | toolsreasoningJSON |
| 12 | GPT-5 Nano (batch) OpenAI | $0.025 | $0.20 | 400K | visiontoolsreasoningJSON |
| 13 | DeepSeek V4 Flash Latest ~deepseek | $0.048 | $0.157 | 1.05M | toolsreasoningJSON |
| 14 | Ministral 3 8B 2512 (batch) Mistral AI | $0.075 | $0.075 | 262K | visiontoolsJSONopen weights |
| 15 | Laguna XS 2.1 Poolside | $0.06 | $0.12 | 262K | toolsreasoningopen weights |
| 16 | DeepSeek V4.1 Flash (batch) DeepSeek | $0.05 | $0.15 | 1.05M | visiontoolsreasoningJSONopen weights |
| 17 | Gemma 3 12B | $0.05 | $0.15 | 131K | visiontoolsJSONopen weights |
| 18 | $0.05 | $0.18 | 1.05M | visiontoolsreasoningJSONopen weights | |
| 19 | $0.05 | $0.20 | 1.05M | visionaudiotoolsreasoningJSON | |
| 20 | GPT-4.1 Nano (batch) OpenAI | $0.05 | $0.20 | 1.05M | visiontoolsJSON |
| 21 | Solar Mini 4 Upstage | $0.05 | $0.20 | 524K | toolsreasoningJSON |
| 22 | Ling 3.0 Flash VL inclusionAI | $0.06 | $0.18 | 131K | visiontoolsreasoningJSONopen weights |
| 23 | Qwen3.5-9B Qwen | $0.08 | $0.13 | 262K | visiontoolsreasoningJSONopen weights |
| 24 | Claude Haiku 5.5 (batch) Anthropic | $0.05 | $0.25 | 1M | visiontoolsreasoningJSON |
| 25 | Ministral 3 3B 2512 Mistral AI | $0.10 | $0.10 | 131K | visiontoolsJSONopen weights |
| 26 | GPT-6 Luna Pro (batch) OpenAI | $0.05 | $0.25 | 1.05M | visiontoolsreasoningJSON |
| 27 | GPT-6 Luna (batch) OpenAI | $0.05 | $0.25 | 1.05M | visiontoolsreasoningJSON |
| 28 | Reka Edge Rekaai | $0.10 | $0.10 | 16K | visiontoolsreasoningJSONopen weights |
| 29 | Nemotron 3.5 Lightning NVIDIA | $0.07 | $0.20 | 262K | toolsreasoningJSONopen weights |
| 30 | Nova Lite 1.0 Amazon | $0.06 | $0.24 | 300K | visiontools |
| 31 | Nemotron 3 Nano 30B A3B NVIDIA | $0.06 | $0.24 | 262K | toolsreasoningJSONopen weights |
| 32 | Granite 4.2 8B IBM Granite | $0.06 | $0.25 | 131K | toolsreasoningJSONopen weights |
| 33 | Ling 3.1 Flash inclusionAI | $0.075 | $0.225 | 262K | toolsreasoningJSON |
| 34 | Laguna S 2.1 Poolside | $0.09 | $0.18 | 1.05M | toolsreasoningopen weights |
| 35 | DeepSeek V4 Flash 0423 DeepSeek | $0.091 | $0.182 | 1.05M | toolsreasoningJSONopen weights |
| 36 | Qwen3.5-Flash Qwen | $0.065 | $0.26 | 1M | visiontoolsreasoningJSON |
| 37 | Nex-N2.5-Pro Nex Agi | $0.075 | $0.25 | 262K | visiontoolsreasoningJSONopen weights |
| 38 | $0.07 | $0.28 | 262K | toolsJSONopen weights | |
| 39 | $0.10 | $0.20 | 1.05M | visiontoolsreasoningJSON | |
| 40 | $0.10 | $0.20 | 1.05M | visiontoolsreasoningJSON |