Mistral Medium 3.5
Mistral AI · · 67 days after Mistral Small 4
Partially verified
2 of 3 published values traced to a source1 primary source, 1 archived
Why this status
Cited to the lab's own announcement. Not verified because the release date could not be traced: every archived snapshot of those sources predates the release — the newest is 2026-05-21, captured before the page announced it — so the archived copy does not contain the figure. A capture from on or after 2026-05-22 would settle it.
What these states mean · How records are judged · Has this record changed?
A dense 128B open-weight model aimed at long-horizon coding and productivity work, released under a modified MIT licence.
Details
| Released | May 22, 2026 |
|---|---|
| Company | Mistral AI |
| Family | Mistral |
| Era | Agentic systems |
| Type | Language model · LLM |
| Modalities | Not recorded |
| Capabilities | Coding |
| Weights | Open weights |
| Licence | Modified MIT |
| Context window | 256K tokensstated in mistral.aiMistral Medium 3.5 supports a context window of 256,000 tokens.
|
| Parameters | 128Bstated in mistral.aiMistral Medium 3.5 has 128,000,000,000 parameters.
|
Pricing
The price a lab's own page showed on the day that page was captured. That is what a snapshot can prove; it is not necessarily the launch price, and prices are often cut later. Citing the live pricing page instead would give a number with no date at all.
| Input | $1.5 per million tokens observed May 21, 2026 · archived snapshot (2026-05-21) |
|---|---|
| Output | $7.5 per million tokens observed May 21, 2026 · archived snapshot (2026-05-21) |
Benchmarks
Each row is a dated claim by a named party, not a property of the model. A later revision adds a row rather than replacing one. This project publishes no composite or overall score.
| Benchmark | Score | Reported by | Date |
|---|---|---|---|
| SWE-bench Verified | 77.6 | Vendor reported | May 22, 2026 |
Current information, elsewhere
This record is a historical one: every figure above is traced to a dated primary source. For what is true today — live pricing, current rankings, availability — these are better maintained than anything here could be.
- Current price and providers OpenRouter ↗
- Current benchmark scores Artificial Analysis ↗
- Weights and model card Hugging Face ↗
Sources
Record status: partly verified · confidence 60/100 · 1 of 1 primary
Cited to the lab's own announcement. Not verified because the release date could not be traced: every archived snapshot of those sources predates the release — the newest is 2026-05-21, captured before the page announced it — so the archived copy does not contain the figure. A capture from on or after 2026-05-22 would settle it.
- mistral.ai Official announcement archived
Primary means published by the organisation that made the model. Verified records require at least one.
Mistral family
- Mistral 7B September 27, 2023
- Mistral Large 2 July 24, 2024
- Mistral Small 3 January 30, 2025
- Mistral Large 3 December 2, 2025
- Ministral 3 3B December 2, 2025
- Ministral 3 8B December 2, 2025
- Ministral 3 14B December 2, 2025
- Mistral Small 4 March 16, 2026
- Mistral Medium 3.5 May 22, 2026
- Shieldstral 1.0 3B August 4, 2026
- Mistral Large 4 October 6, 2026
Compare Mistral Medium 3.5 with another model →
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