Previous-generation coding-optimized model for software engineering.
Mistral's next-gen small model, unifying Magistral's reasoning, Pixtral's vision, and Devstral's coding into one system.
No shared agent demos for these models yet.
No captured outputs for these models yet.
This model hasn't been benchmarked yet.
This model hasn't been benchmarked yet.
Both GPT 5.1 Codex and Mistral Small 4 are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.
Mistral Small 4 has a lower blended cost. GPT 5.1 Codex: $1.25 input / $10.00 output. Mistral Small 4: $0.15 input / $0.60 output.
GPT 5.1 Codex has a larger context window: GPT 5.1 Codex supports 400K tokens vs Mistral Small 4 at 262K tokens.
Yes, both GPT 5.1 Codex and Mistral Small 4 support vision/image input.
Key differences: Mistral Small 4 is significantly cheaper. Compare full specs on this page.
If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both GPT 5.1 Codex and Mistral Small 4 for free on idapt.app to see which performs better for your specific needs.