Devstral Medium
Devstral Medium is a chat model from Mistral, released July 10, 2025. Devstral Medium is a high-performance code generation and agentic reasoning model developed jointly by Mistral AI and All Hands AI. Positioned as a step up from Devstral Small, it achieves...
by Mistral · 131K token context window
Best for
- low-latency chat and routing
- request routing and triage
- text classification
Ways to use Devstral Medium in osFoundry
Connect with your own key (BYOK)
Open the key dialog and paste your Mistral API key. osFoundry discovers Devstral Medium automatically — assign it to a Maestro role (router, direct, orchestrator, or fallback) in the Pipeline tab and it is live in every chat. Your key, your provider account — no token markup.
Use it in a Room App
Room Apps declare AI features in their manifest, then call them with invokeAI:
import { invokeAI } from '@osfoundry/app-sdk'
// 'summarize' is an AI feature declared in your app manifest.
const result = await invokeAI('summarize', userText)
Call it from your own apps
Once a model is wired into your workspace you can host it as an API and reach it from your own services, scripts, or CI — outside osFoundry.
Devstral Medium vs similar models
Licence
Hosted — usage subject to provider terms — Hosted-only model — usage governed by the provider's API terms. Bring your own provider key.
No weights distributed; usage subject to provider terms.
Frequently asked about Devstral Medium
How much does Devstral Medium cost?
Devstral Medium is metered at $ 0.400 /1M for input, and $ 2.00 /1M for output. Bring your own Mistral API key — osFoundry passes through provider pricing without markup.
Can I use Devstral Medium commercially?
Commercial use is allowed with conditions. Hosted-only model — usage governed by the provider's API terms. Bring your own provider key. No weights distributed; usage subject to provider terms.
What is the context window of Devstral Medium?
Devstral Medium supports a 131K token context window.
Can I run Devstral Medium locally?
No — Devstral Medium is hosted only and accessed via the Mistral API.
What is Devstral Medium best at?
Devstral Medium is well-suited to low-latency chat and routing, request routing and triage, text classification.
How do I use Devstral Medium in osFoundry?
Paste your Mistral API key in the key dialog (or deploy the open weights for self-hostable models), assign Devstral Medium to a Maestro role in the Pipeline tab, then use it in chat, Room Apps via invokeAI, or your own apps.
Published by Mistral on July 10, 2025. Source: https://openrouter.ai/mistralai/devstral-medium