Mistral Medium 3.5: what it costs to run
The price Mistral lists for Mistral Medium 3.5, what a support reply, a document summary and an agent task cost at it, and where that puts it among 37 models.
US dollars per million tokens, standard rate, shortest context band.
- 1,000 support replies
- $7.50
- Cached input
- Not published
- Context window
- 256,000 tokens
- Released
- 28 Apr 2026
- Weights
- Open
From Mistral’s own pages, 22 September 2026.
Mistral Medium 3.5 costs $1.50 per million input tokens and $7.50 per million output tokens on Mistral’s own API. At those prices 1,000 support replies cost $7.50, the 13th most expensive of 33 priced models on our list. It reads up to 256,000 tokens at once and was released on 28 Apr 2026.
What a job costs
Three jobs, 1,000 runs of each, at the list price above, and where each puts Mistral Medium 3.5 among the 33 models with a list price.
| Job | 1,000 runs | Among 33 |
|---|---|---|
| Support reply3,000 in, 400 out. | $7.50 | 13th most expensive |
| Document summary25,000 in, 1,000 out. | $45.00 | 13th most expensive |
| Agent task80,000 in (70,000 cached), 3,000 out. | $143 | 6th most expensive |
The token counts are ours, chosen to look like real work; the prices are Mistral’s. All three jobs stay under 200,000 tokens a request, below every long-context surcharge on the list. Mistral publishes no cache price for this model, so the agent task bills its repeated context at the full input rate.
Mistral Medium 3.5 on real small-business tasks
What the AIGROW benchmark measured when Mistral Medium 3.5 was given 20 office tasks, each marked pass or fail by fixed checks.
- Success rate
- 40% of 20 runs passed (95% interval 22 to 61%), 30th of 36 models.
- Cost per 1,000 passes
- $7.40, failed runs included.
- Answer time
- 1.6 s median, 2.3 s at the 90th percentile.
- Strongest and weakest
- Email triage (100% passed) and review replies (0%).
The small print
What the base rate above leaves out, copied from the maker’s pages: surcharges, discounts, promotions and cache pricing.
Cached price not published (the pricing FAQ says only 'up to 90%' off). Batch 50% off per https://mistral.ai/pricing. Open weights under a modified MIT license.
Mistral Medium 3.5 against the models it is weighed with
Each comparison puts both list prices side by side and costs the same three jobs on each.
- vs Claude Sonnet 5
- The European option against Anthropic's workhorse, for buyers who care where their data is processed.
- vs Gemini 3.8 Flash
- The European mid-priced model against Google's high-volume workhorse.
Other Mistral models
| Model | Input | Output | Context | 1,000 replies |
|---|---|---|---|---|
| Ministral 3 14BMistral · open weights | $0.20 | $0.20 | 256K | $0.68 |
| Mistral Small 4Mistral · open weights | $0.15 | $0.60 | 256K | $0.69 |
Where the price comes from
Read on 22 September 2026. Each price is the standard rate for the shortest context band, with no batch or priority discount; long-context surcharges, batch rates and promotions are in each model’s small print. No price was taken from a reseller.
Run Mistral Medium 3.5 for a quarter of its list price
AIGROW API credit covers Mistral Medium 3.5 and is metered at the list price above: $25 buys $100 of usage.
Prices checked 22 September 2026