ModelRefs / o3 vs Mistral Small 3.1 — Benchmarks, Pricing & Coding Comp…
o3 vs Mistral Small 3.1 — Benchmarks, Pricing & Coding Comp…
o3 vs Mistral Small 3.1: side-by-side benchmarks, pricing, context windows, coding ability and deployment. Pick the right model for your stack.
Overview
o3: o3 is OpenAI's extended-thinking reasoning model, applying deliberate chain-of-thought computation to excel on mathematics, science, and competitive programming tasks. Released in April 2025, it introduced OpenAI's scalable test-time compute approach at production scale.
Context window: Mistral Small 3.1 accepts up to 128,000 tokens, o3 up to 200,000. Confirm the limit for your specific deployment channel before relying on it.
Mistral Small 3.1 vs o3 at a glance
| Attribute | Mistral Small 3.1 | o3 |
|---|---|---|
| Provider | Mistral AI | OpenAI |
| Released | 2025-03-17 | 2025-04-01 |
| Context window | 128,000 tokens | 200,000 tokens |
| Input price | $0.1/M tokens | $10/M tokens |
| Output price | $0.3/M tokens | $40/M tokens |
| Licence | Apache-2.0 | Proprietary |
| Self-hostable | Yes, open weights | No, hosted only |
| Modalities | text, vision | text, vision |
Where they differ most
- Cost Efficiency: Mistral Small 3.1 95%, o3 13%. Mistral Small 3.1 leads on this dimension.
- Reasoning: Mistral Small 3.1 67%, o3 83%. o3 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 o3 vs Mistral Small 3.1 — Benchmarks, Pricing & Coding Comp….
Frequently asked questions
Which is better, o3 or Mistral Small 3.1?
o3 and Mistral Small 3.1 target different workloads — see the benchmark and pricing tables for a side-by-side answer.
Is o3 cheaper than Mistral Small 3.1?
Compare $0.0100 vs $0.00010 on this page.