Claude Opus 5.5 vs Mistral Medium 3.5
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 Opus 5.5 comes from Anthropic and Mistral Medium 3.5 from Mistral. The practical difference for most people is context, price, and which input types each one accepts.
Claude Opus 5.5 holds more in a single conversation — 1M tokens against 262K — which matters for long documents and large codebases.
Mistral Medium 3.5 is the cheaper of the two on input tokens at $1.50 / 1M tokens.
| Specification | Claude Opus 5.5 | Mistral Medium 3.5 |
|---|---|---|
| Provider | Anthropic | Mistral |
| Model ID | claude-opus-5-5 | mistral-medium-latest |
| Context window | 1M | 262K |
| Max output | 128K | — |
| Input price | $4.00 / 1M tokens | $1.50 / 1M tokens |
| Output price | $20.00 / 1M tokens | $7.50 / 1M tokens |
| Knowledge cutoff | 2026-06 | — |
| Input types | text, image, file | text, image |
| Output types | text | text |
| Plan | All paid plans | All paid plans |
Which should you use?
Pick Claude Opus 5.5 when…
- You need the larger context window — 1M against 262K.
- You want longer single responses — up to 128K output tokens.
- You need file input, which the other model does not accept.
Pick Mistral Medium 3.5 when…
- Cost matters: input runs at $1.50 / 1M tokens versus $4.00 / 1M tokens.
Related comparisons
Try both on Clade
You do not have to choose. One Clade subscription gives you Claude Opus 5.5, Mistral Medium 3.5, and every other model on the platform.