Claude Sonnet 4.5 vs Mistral Medium 3.1
Side-by-side specs, pricing and capabilities. Both models run on Clade under one subscription, so you can switch between them in the same conversation.
Claude Sonnet 4.5 comes from Anthropic and Mistral Medium 3.1 from Mistral. The practical difference for most people is context, price, and which input types each one accepts.
Claude Sonnet 4.5 holds more in a single conversation — 1M tokens against 128K — which matters for long documents and large codebases.
Mistral Medium 3.1 is the cheaper of the two on input tokens at $0.40 / 1M tokens.
| Specification | Claude Sonnet 4.5 | Mistral Medium 3.1 |
|---|---|---|
| Provider | Anthropic | Mistral |
| Model ID | claude-sonnet-4-5-20250929 | mistral-medium-latest |
| Context window | 1M | 128K |
| Max output | 64K | 8K |
| Input price | $3.00 / 1M tokens | $0.40 / 1M tokens |
| Output price | $15.00 / 1M tokens | $2.00 / 1M tokens |
| Knowledge cutoff | 2025-01 | — |
| Input types | text, image, file | text, image, file, audio |
| Output types | text | text |
| Plan | Premium | Free |
Which should you use?
Pick Claude Sonnet 4.5 when…
- You need the larger context window — 1M against 128K.
- You want longer single responses — up to 64K output tokens.
Pick Mistral Medium 3.1 when…
- Cost matters: input runs at $0.40 / 1M tokens versus $3.00 / 1M tokens.
- You need audio input, which the other model does not accept.
- You are on the free plan — this model is included without an upgrade.
Related comparisons
Try both on Clade
You do not have to choose. One Clade subscription gives you Claude Sonnet 4.5, Mistral Medium 3.1, and every other model on the platform.