As of: 2026-11-13 13:49 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/m/mistral-medium-3-5/

# Mistral Medium 3.5

Mistral AI, Mistral Medium family. Status: current. Type: multimodal model. Released: 2026-04-28. Training cutoff: not published.

## How to call it

| Provider | Model id | Endpoint | Docs |
|---|---|---|---|
| Mistral API | `mistral-medium-3-5` | https://api.mistral.ai/v1/chat/completions | https://docs.mistral.ai/models/model-cards/mistral-medium-3-5-26-04 |
| OpenRouter | `mistralai/mistral-medium-3-5` |  | https://openrouter.ai/mistralai/mistral-medium-3-5 |
| Hugging Face |  |  | https://huggingface.co/mistralai/Mistral-Medium-3.5-128B |
| Web app |  |  | https://chat.mistral.ai |

## Pricing

- Input: $1.50 per 1M tokens
- Output: $7.50 per 1M tokens
- Unit as published: per 1M tokens (USD)
- Source: https://docs.mistral.ai/models/model-cards/mistral-medium-3-5-26-04
- Last checked: 2026-09-29

## Specs

- Input: text, image
- Output: text
- Context window: 256,000 tokens
- Max output: not published
- Open weights: yes
- Licence: modified-mit

## What it has not seen

- No published training cutoff. Counted from its release (2026-04-28): at least 1,864 AI events since (426 major, 83 historic), as of 2026-11-13.
- Everything since March 2026: https://postcutoff.com/since/2026-03/

## What stands out

- One model replacing Devstral 2 and Magistral: Frontier-class multimodal model for agentic and coding use; Mistral names it the replacement for deprecated Devstral 2 (deprecated 2026-05-22). Source: https://docs.mistral.ai/models/model-cards/devstral-2-25-12
- Open-weight 128B dense with vision: 128B dense weights on Hugging Face under a modified MIT license, 256K context, built-in tools and Agents/Conversations API support. Source: https://docs.mistral.ai/models/model-cards/mistral-medium-3-5-26-04

## Notes

Alias mistral-medium-latest (version v26.04). Official card lists 2 more aliases not verified. Batch API supported (OpenRouter batch $0.75/$3.75). Knowledge cutoff not published.

Mistral's current frontier model for coding agents, reasoning and vision.

```bash
curl https://api.mistral.ai/v1/chat/completions -H "Authorization: Bearer $MISTRAL_API_KEY" -H "Content-Type: application/json" \
 -d '{"model":"mistral-medium-3-5","messages":[{"role":"user","content":"Hello"}]}'
```

Sources: https://docs.mistral.ai/models/overview , https://docs.mistral.ai/models/model-cards/mistral-medium-3-5-26-04

Model page: https://postcutoff.com/m/mistral-medium-3-5/