Mistral Small 4 is the next major release in the Mistral Small family, unifying the capabilities of several flagship Mistral models into a single system. It combines strong reasoning from Magistral, multimodal understanding from Pixtral, an…
Model details →Mistral: Mistral Small 4 vs OpenAI: GPT-5.1-Codex-Max
Mistral: Mistral Small 4 wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
GPT-5.1-Codex-Max is OpenAI’s latest agentic coding model, designed for long-running, high-context software development tasks. It is based on an updated version of the 5.1 reasoning stack and trained on agentic workflows spanning software e…
Model details →Side-by-side comparison
| Capability | Mistral: Mistral Small 4 | OpenAI: GPT-5.1-Codex-Max | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 262K | 400K | 🏆 OpenAI: GPT-5.1-Codex-Max |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.15 | $1.25 | 🏆 Mistral: Mistral Small 4 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.60 | $10.00 | 🏆 Mistral: Mistral Small 4 |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Mistral: Mistral Small 4 better than OpenAI: GPT-5.1-Codex-Max?
Mistral: Mistral Small 4 wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Mistral: Mistral Small 4 and OpenAI: GPT-5.1-Codex-Max?
Input: $0.15 vs $1.25 per 1M tokens. Output: $0.60 vs $10.00 per 1M tokens.
What context windows do Mistral: Mistral Small 4 and OpenAI: GPT-5.1-Codex-Max support?
Mistral: Mistral Small 4 supports up to 262K tokens. OpenAI: GPT-5.1-Codex-Max supports up to 400K tokens.
Do both Mistral: Mistral Small 4 and OpenAI: GPT-5.1-Codex-Max support tool calling?
Mistral: Mistral Small 4: yes. OpenAI: GPT-5.1-Codex-Max: yes.