Mistral Medium 3.5
Mistral AIReleased Apr 28, 2026Open weights · Modified MITmistral-medium-3-5
- Intelligence (Epoch)
- 141 · 77th of 111
- Reasoning
- yes, with effort levels
- Context
- 256k tokens
- Max output
- 200k tokens
- Input
- text, image
- API features
- tools, structured outputs, JSON mode, seed
- Mistral AI's API
- yes, as mistral-medium-3-5
Read Oct 23, 06:00 UTC from the hosts' published offers and OpenRouter, spec sheet from Mistral AI
Intelligence for the price
56 models score higher for the same price or less; it ranks 57 of the 89 models at its price or below.
Epoch Capabilities Index against the lowest input + output price per M, log scale · prices Oct 23. Score: Epoch AI, CC BY 4.0, 141 with an interval of 139 to 144.
Against its rivals
The best of its price range and the top score
- Mistral Medium 3.5this model$9.00141
- Claude Opus 5.5top score$24.00169
- GPT-6.1 Solsame price range$12.00168
- Claude Sonnet 5.5same price range$12.00166
Same level for 75× less: gpt-oss-20b at AkashML, $0.12 per M input + output · their Epoch intervals overlap (138 against 141).
Bars: Epoch Capabilities Index (Epoch AI, CC BY 4.0), drawn from 100, below the lowest score in the catalogue · price: lowest input + output per M.
Open weights under Modified MIT: you can run Mistral Medium 3.5 on your own hardware instead of paying per token.
Memory ≈ parameters × bytes per parameter × 1.2 · cloud price: on-demand rate, running 24/7 · builds: GGUF, AWQ, MLX, GPTQ, Ollama · break-even calculator
| Provider | Input | Output | Cache ↑ | tok/s | First token | Uptime 24h | Checked |
|---|---|---|---|---|---|---|---|
| Mistral AI256K ctx · 210K out | $1.50 | $7.50 | — | 142 | 0.63 s | 100% | Oct 23 |
1 provider · prices per million tokens, read Oct 23, 06:00 UTC · speed: OpenRouter, median of the last 30 min, read Oct 23, 06:00 UTC · uptime: OpenRouter, last 24 h · under each host: weights precision, context and max output as served, the maker's value in brackets when the host's differs
| Provider | Weights | Context | Max output | Tools | Structured outputs | Reasoning |
|---|---|---|---|---|---|---|
| Mistral AI | not checked yet | 256K | 210K | yes | yes | yes |
Weights, context and max output: read at each host's own catalogue or docs where its terms allow, otherwise as the host declares to OpenRouter; hover a cell for its source and date · tools, structured outputs, reasoning: as declared to OpenRouter · not verified by us
Mistral Medium 3.5 spec sheet, field by field, with sources
Mistral Medium 3.5 spec sheetmaker-declared
What Mistral AI declares about the model itself — read from its own weights repository and documentation, not from any host. What each endpoint actually serves is in the pricing above: the two can differ, and both are true.
- Context window
- to verify
- Parameters
- to verify
- Active experts
- to verify
- Weight precision
- to verify
- License
- Modified MIT — open weights, conditionalScope: the licence on the published weights, and nothing else. It is not the maker's acceptable-use policy, which is a separate document, and it is not the contract you sign with whichever host you call — hosts set their own terms, which this index does not read.
- Knowledge cutoff
- not published by the maker
- Modalities
- to verify
- Max output (official)
- to verify
- Release date
- April 28, 2026
- Maker lifecycle status
- General availability
docs.mistral.ai · maker's documentation · read 2026-09-07 · 3 of 10 fields published by the maker
| Date | Provider | Input | Output | Change |
|---|---|---|---|---|
| Sep 5 | Mistral AI | $1.65 → $1.50 | $8.25 → $7.50 | −9% |
Every published change of input or output price, newest first · change on input + output · full series: pricing-history.csv.
| Provider | Chatbot 1,000 in / 500 out | RAG / long context 8,000 in / 500 out | Batch summarize 4,000 in / 1,000 out |
|---|---|---|---|
| Mistral AI | $5.25 | $15.75 | $13.50 |
What each host bills for 1,000 requests of a representative job
Your own workload
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