Mistral Small 4 is Mistral AI's Small-family model unifying Magistral reasoning, Pixtral vision, and Devstral coding, released under Apache 2.0.
Capabilities, design details, and architectural traits
Mistral Small 4 is the first model in Mistral AI's Small family to combine the specialized strengths of three separate flagship lines: Magistral for reasoning, Pixtral for multimodal input, and Devstral for agentic coding. Instead of choosing between a fast instruct model, a reasoning engine, or a multimodal assistant, Small 4 delivers all three from a single model.
| Trait | Description |
|---|---|
| Merged Capabilities | Unifies Magistral's reasoning, Pixtral's multimodal input, and Devstral's agentic coding into one model |
| Configurable Reasoning Effort | Toggles between fast, low-latency responses and deep, reasoning-intensive outputs |
| Mixture-of-Experts Architecture | Uses sparse expert activation rather than a fully dense model, enabling efficient scaling |
| Native Multimodality | Accepts both text and image inputs within the same model |
Mistral Small 4 is released under the Apache 2.0 license, allowing self-hosting, fine-tuning, and commercial use without restriction.
Independent evaluations · Artificial Analysis
Evaluate specifications, pricing, and independent benchmark indices
| Model Details | |||
|---|---|---|---|
| General Info | |||
| Provider | Mistral | Anthropic | Anthropic |
| Release Date | March 16, 2026 | July 24, 2026 | June 9, 2026 |
| Knowledge Cutoff | - | May 2026 | - |
| Context & Limits | |||
| Context Window | 262K | 1M Best Context Window | 1M Best Context Window |
| Pricing (per 1M tokens) | |||
| Input Pricing | $0.15 Best Input Pricing | $5 | $10 |
| Output Pricing | $0.60 Best Output Pricing | $25 | $50 |
| Modalities | |||
| Inputs | textimage | textimage | textimagefile |
| Outputs | text | text | text |
| Benchmarks (0-100) | |||
| Intelligence Index | 12.3 | 63.1 Best Intelligence Index | 62.1 |
| Coding Index | - | 78.0 Best Coding Index | 76.5 |
| Agentic Index | - | 59.2 Best Agentic Index | 56.6 |
Graduate-level reasoning and expert Q&A evaluation.
Extremely difficult logical reasoning and knowledge.
Logical reasoning over long context windows.
Independent evaluation data provided by Artificial Analysis. To view the latest benchmarks and full details, visit their official site.
