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: o3 Deep Research
Mistral: Mistral Small 4 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
o3-deep-research is OpenAI's advanced model for deep research, designed to tackle complex, multi-step research tasks. Note: This model always uses the 'web_search' tool which adds additional cost.
Model details →Side-by-side comparison
| Capability | Mistral: Mistral Small 4 | OpenAI: o3 Deep Research | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 262K | 200K | 🏆 Mistral: Mistral Small 4 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.15 | $10.00 | 🏆 Mistral: Mistral Small 4 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.60 | $40.00 | 🏆 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: o3 Deep Research?
Mistral: Mistral Small 4 wins on 3 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: o3 Deep Research?
Input: $0.15 vs $10.00 per 1M tokens. Output: $0.60 vs $40.00 per 1M tokens.
What context windows do Mistral: Mistral Small 4 and OpenAI: o3 Deep Research support?
Mistral: Mistral Small 4 supports up to 262K tokens. OpenAI: o3 Deep Research supports up to 200K tokens.
Do both Mistral: Mistral Small 4 and OpenAI: o3 Deep Research support tool calling?
Mistral: Mistral Small 4: yes. OpenAI: o3 Deep Research: yes.