Mistral Small 4
$0.15 per 1M input tokens and $0.60 per 1M output tokens · 262K context · vision, tools, reasoning, JSON, open weights.
Prices checked Oct 21, 2026 · tracked by LLM Cost Index since Oct 21, 2026
Cheaper ways to run the same model: Mistral Small 4 (batch) at $0.075 / $0.30 — same model, different service (e.g. batch processing with a delay).
What Mistral Small 4 costs per month
Estimated monthly bill for typical workloads, using the cached-input price for repeated context. Try your own numbers in the cost calculator.
| Workload | Per month |
|---|---|
| Customer chatbot 1,000 conversations a day, 8 turns each | $75.24 |
| Document Q&A (RAG) 500 questions a day over retrieved documents | $16.79 |
| Coding / tool-using agent 200 tasks a day, long tool-heavy contexts | $31.95 |
| Content generation 30 long articles a day | $1.75 |
| Classification / extraction 100,000 short items a day | $162 |
Price history
We started tracking Mistral Small 4 on Oct 21, 2026; the chart appears as soon as there is a second data point. See all recent price changes.
Where to run Mistral Small 4: 4 providers
Mistral is the cheapest at $0.15 input / $0.60 output per 1M tokens. Uptime is the average over the last 30 days as reported by OpenRouter; see provider reliability.
Cheaper alternatives to Mistral Small 4
Models with the same tool calling, image input, structured output for at least 20% less (3:1 input/output mix), most capable first.
| Model | Input / 1M | Output / 1M | Context | Capabilities |
|---|---|---|---|---|
| Claude Haiku 5.5 Anthropic | $0.10 | $0.50 | 1M | visiontoolsreasoningJSON |
| GLM 5.3 Flash Z.ai | $0.041 | $0.12 | 1.05M | visiontoolsreasoningJSONopen weights |
| GPT-6 Luna OpenAI | $0.10 | $0.50 | 1.05M | visiontoolsreasoningJSON |
| MiMo-V2.6-Flash Xiaomi | $0.14 | $0.28 | 1.05M | visionaudiotoolsreasoningJSONopen weights |
| DeepSeek V4.1 Flash DeepSeek | $0.049 | $0.375 | 1.05M | visiontoolsreasoningJSONopen weights |
How to pay less for Mistral Small 4
For a customer chatbot (1,000 conversations a day, 8 turns each) that costs $104 a month at list price without caching:
| Option | Per month | You save |
|---|---|---|
| Switch to Mistral Small 4 (batch) | $52.20 | $52.20 (50%) |
| Move to Claude Haiku 5.5 (similar capabilities) | $58.56 | $45.84 (44%) |
| Use prompt caching (60% of input cached) | $75.24 | $29.16 (28%) |
Other workloads: cut-your-bill tool for Mistral Small 4.
Specifications
| Model ID | mistralai/mistral-small-2603 |
| Input | text, image |
| Output | text |
| Tool calling | Yes |
| Structured output | Yes |
| Reasoning mode | Yes |
| Open weights | Yes — mistralai/Mistral-Small-4-119B-2603 |
| Released | Mar 16, 2026 |
FAQ
- How much does Mistral Small 4 cost?
- $0.15 per million input tokens and $0.60 per million output tokens; cached input costs $0.015 per million. Prices as of Oct 21, 2026.
- What is the context window of Mistral Small 4?
- 262K tokens, with up to 210K output tokens per response.
- Does Mistral Small 4 support images, tools and structured output?
- Images as input: yes. Tool calling: yes. Structured (JSON) output: yes. Reasoning mode: yes.
- What are cheaper alternatives to Mistral Small 4?
- Models with the same key capabilities for at least 20% less include Claude Haiku 5.5 ($0.10 / $0.50), GLM 5.3 Flash ($0.041 / $0.12), GPT-6 Luna ($0.10 / $0.50).
More from Mistral AI: all Mistral AI models · how we collect prices