ModelRefs / GPT-5 vs Mistral Small 3.1 — Benchmarks, Pricing & Coding C…
GPT-5 vs Mistral Small 3.1 — Benchmarks, Pricing & Coding C…
GPT-5 vs Mistral Small 3.1: side-by-side benchmarks, pricing, context windows, coding ability and deployment. Pick the right model for your stack.
Overview
GPT-5: GPT-5 is OpenAI's August 2025 reasoning model for coding, reasoning, and agentic tasks. The API model supports text input and output, image input, configurable reasoning effort, and an immutable gpt-5-2025-08-07 snapshot; OpenAI now classifies it as a previous-generation model.
Context window: GPT-5 accepts up to 400,000 tokens, Mistral Small 3.1 up to 128,000. Confirm the limit for your specific deployment channel before relying on it.
GPT-5 vs Mistral Small 3.1 at a glance
| Attribute | GPT-5 | Mistral Small 3.1 |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Released | 2025-08-07 | 2025-03-17 |
| Context window | 400,000 tokens | 128,000 tokens |
| Input price | $1.25/M tokens | $0.1/M tokens |
| Output price | $10/M tokens | $0.3/M tokens |
| Licence | Proprietary | Apache-2.0 |
| Self-hostable | No, hosted only | Yes, open weights |
| Modalities | text, vision | text, vision |
Where they differ most
- Cost Efficiency: GPT-5 47%, Mistral Small 3.1 95%. Mistral Small 3.1 leads on this dimension.
- Reasoning: GPT-5 90%, Mistral Small 3.1 67%. GPT-5 leads on this dimension.
Capability scores are ModelRefs' own derived signals, not vendor claims or benchmark results. Validate against your own workload before relying on them.
Continue your research
Use these connected ModelRefs sections to compare alternatives, inspect implementation paths, and review the evidence and governance boundaries relevant to GPT-5 vs Mistral Small 3.1 — Benchmarks, Pricing & Coding C….
Frequently asked questions
Which is better, GPT-5 or Mistral Small 3.1?
GPT-5 and Mistral Small 3.1 target different workloads — see the benchmark and pricing tables for a side-by-side answer.
Is GPT-5 cheaper than Mistral Small 3.1?
Compare $0.00125 vs $0.00010 on this page.