Claude Opus 5.5 vs Mistral Medium 3.5 pricing
- For the Chatbot workload, Mistral Medium 3.5 costs 2.7× less than Claude Opus 5.5.
- For the RAG workload, Mistral Medium 3.5 costs 2.7× less than Claude Opus 5.5.
- For the Coding agent workload, Mistral Medium 3.5 costs 2.4× less than Claude Opus 5.5.
Prices
| USD per 1M tokens | Claude Opus 5.5 | Mistral Medium 3.5 |
|---|---|---|
| Input | $4.00 | $1.50 |
| Output | $20.00 | $7.50 |
| Cache read | $0.20 | $0.15 |
| Cache write | $5.00 | Not published |
| Batch input | $2.00 | Not published |
| Batch output | $10.00 | Not published |
Verified against the provider's official pricing page on Oct 9, 2026. Official pricing page
Mistral's list price for its own API, as compiled by models.dev and checked Oct 10, 2026, 09:00 UTC. Prices on cloud platforms and resellers can differ. Provider documentation
Monthly cost by workload
| Workload | Claude Opus 5.5 | Mistral Medium 3.5 |
|---|---|---|
| Chatbot1,000 in / 500 out tokens, 10,000 requests a day | $4,200/mo | $1,575/mo |
| RAG8,000 in / 500 out tokens, 5,000 requests a day | $6,300/mo | $2,363/mo |
| Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input | $2,640/mo | $1,080/mo |
Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.
Context and capabilities
| Claude Opus 5.5 | Mistral Medium 3.5 | |
|---|---|---|
| Context | 1,000,000 tokens | 262,144 tokens |
| Max output | 128,000 tokens | 262,144 tokens |
| Input | text, image, pdf | text, image |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
Questions
- What is the price difference between Claude Opus 5.5 and Mistral Medium 3.5?
- Claude Opus 5.5: $4.00 per 1M input tokens and $20.00 per 1M output tokens. Mistral Medium 3.5: $1.50 per 1M input tokens and $7.50 per 1M output tokens. For the Chatbot workload (1,000 in / 500 out tokens, 10,000 requests a day), that is about $4,200 per month for Claude Opus 5.5 and $1,575 for Mistral Medium 3.5.
- Which has the longer context window, Claude Opus 5.5 or Mistral Medium 3.5?
- Claude Opus 5.5 has the longer context window: up to 1,000,000 tokens, compared with 262,144 for Mistral Medium 3.5.
- Do Claude Opus 5.5 and Mistral Medium 3.5 have prompt caching and batch prices?
- Claude Opus 5.5: cached input $0.20 per 1M tokens; batch $2.00 per 1M input tokens and $10.00 per 1M output tokens. Mistral Medium 3.5: cached input $0.15 per 1M tokens; no batch price published.