Mistral Medium 3.1
Mistral AI · released Aug 13, 2025
- Type
- Proprietary
- Input
- $0.40
- Output
- $2.00
- Cached
- $0.040
List price · per 1M tokens · Mistral AI at 131K context · source ↗
Our take
Written Aug 3, 2026Mistral Medium 3.1 is a hosted-only multimodal model that accepts text, images and files, with a 131,072-token request limit. It sits between Mistral's downloadable and frontier offerings, though no benchmark scores are available to confirm its quality positioning.
Pick this for multimodal tasks that need document and image understanding alongside a large request limit, when you want consistent pricing across the two providers that carry it. Use it through Mistral directly if 47 tokens per second meets your latency needs. Skip it if you need verified quality scores to justify the choice, or if you want to self-host rather than use an API.
The case for it
- Broad multimodal input — text, images and files — at mid-market pricing.
- 131,072-token request limit, with no smaller variant disclosed.
The case against it
- No measured quality scores in our data: chat, reasoning, coding and multimodal benchmarks are all unverified.
- Throughput undisclosed on one of its two providers.
- Parameter count not published, so efficiency cannot be assessed.
How good is it?
We hold no score for this model.
We look for every model we track on every board we watch, and none of them has turned up Mistral Medium 3.1 — so there is no intelligence, coding, agentic or writing score to show you, not a low one, none.
Or rent it from someone else
Why this differs from the header. The strip above quotes Mistral AI's own list price. This is the cheapest live offer at the widest standard context we hold, whoever is serving it — a reseller undercutting a lab is ordinary commerce, not an error.
- per 1M tokens
- $0.40 in / $2.00 out
- Context served
- 131K
- Throughput
- Not measured
| Provider | In / out per 1M tokens | Context | Throughput | Trains on prompts | Logs prompts | Zero retention |
|---|---|---|---|---|---|---|
| OpenRouter | $0.40 / $2.00 | 131K | not measured | Unknown | Unknown | Unknown |
| Mistral AI | $0.40 / $2.00 | 131K | 53 tok/s | No | Yes30 days | Unknown |
Mistral AIAcross the 2 listings we hold: 1 say they do not train on prompts, 0 say they do and 1 do not say. 0 appear in the zero-retention registry we check; the rest are unknown to us rather than confirmed either way.
What each host's API supports
From the parameter list each endpoint publishes. Streaming is omitted: nothing we hold reports it, for any model.
- ✓
- Supported
- ✗
- Not supported
- Not published
- host gave no parameter list
| Provider | Tool calling | JSON output | Strict schema |
|---|---|---|---|
| OpenRouter | ✓ | ✓ | ✓ |
| Mistral AI | ✓ | ✓ | ✓ |
Tool calling: 2 of 2 listings say yes. JSON output: 2 of 2 listings say yes. Strict schema: 2 of 2 listings say yes.
Models people weigh against Mistral Medium 3.1
When we formed this view
Dates behind this page
Prices last checked 9d ago
What we do not know about this model yet
- No board we watch has turned up a score, so we hold no quality figures at all.
- Nothing we hold says whether an endpoint streams, so we do not show it either way.
- 1 of 2 listings do not say whether they train on prompts.
Licence and identifiers
What the licence allowsWe hold no licence record for this model. Inside are the identifiers you need to pull it — its Hugging Face repo where we have one, our slug and a machine-readable card.
Licence
Commercial API terms. We hold no licence record for this model, so there is nothing to summarise here.
Identifiers
- Modality record
- text+image+file->text
- Catalogue slug
- mistralai-mistral-medium-3-1