Mistral Medium 3.5 → Mistral Small 4: cost per request on six tasks
Mistral Small 4 costs 90–92% less than Mistral Medium 3.5 per request on six common tasks. It costs no more per result that works if its results work first time at least 9% as often as Mistral Medium 3.5's on translation, and 10% as often on search re-ranking. Mistral has announced Mistral Medium 3.5's API shutdown for 2027-04-30.
List prices per million tokens
| Model | Input | Cached input | Output |
|---|---|---|---|
| Mistral Medium 3.5 | $1.50 | n/a | $7.50 |
| Mistral Small 4 | $0.15 | $0.015 | $0.60 |
Prices checked 2026-11-12.
Cost per 1,000 requests
| Task | Mistral Medium 3.5 | Mistral Small 4 | Change | Cheaper per result that works if it works first time at least |
|---|---|---|---|---|
| Support bot answerInstructions, three help-centre passages and the customer's question in; a short answer out. | $6.75 | $0.63 | 91% less | 10% as often as Mistral Medium 3.5 |
| Invoice field extractionInstructions and one invoice's text in; about 15 fields as JSON out. | $5.63 | $0.53 | 91% less | 10% as often as Mistral Medium 3.5 |
| Lead scoringScoring rules and one lead's form answers in; a score and a one-line reason out. | $2.55 | $0.24 | 91% less | 10% as often as Mistral Medium 3.5 |
| Email reply draftInstructions and the email thread so far in; a reply of about 300 words out. | $5.25 | $0.47 | 91% less | 9% as often as Mistral Medium 3.5 |
| TranslationInstructions and about 500 words of text in; the same text in another language out. | $7.35 | $0.61 | 92% less | 9% as often as Mistral Medium 3.5 |
| Search re-rankingA search query and 20 result snippets in; the ids of the best five, in order, out. | $6.38 | $0.63 | 90% less | 10% as often as Mistral Medium 3.5 |
Token counts are typical sizes, not measurements.
Mistral Medium 3.5 is being shut down
Mistral has announced Mistral Medium 3.5's API shutdown for 2027-04-30, with Mistral Large 4 as the replacement (source).
Test it on your own prompt
The model switch test runs your prompt on both models side by side with your own API key, in your browser.