Devstral Medium

Tool calling

Website

Mistral coding agent model for repository tasks and software engineering workflows

Context: 128K
Released: 1y ago

Sources:models.dev

Benchmarks

DeepSWE is the primary coding benchmark where an exact model evaluation exists. Other sourced evaluations appear below; missing scores are not zero.

Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.

No benchmark results have been matched to this model yet.

Specifications

Developer: Mistral AI
Model family: Devstral
Type: Language model
Predecessor: —
Successor: —
Released: July 10, 2025
Model ID: mistral/devstral-medium-2507
Openness: Closed
License: —
Input modalities: text
Output modalities: text
Modality: text->text
Max output tokens: 128K
Knowledge cutoff: 2025-05
Hugging Face: —
Source freshness: Metadata synced Oct 8, 2026, 10:17 PM UTC

Additional source evidence

Source model: mistral/devstral-medium-2507
Source family: devstral
Last updated: 2025-07-10
Knowledge cutoff: 2025-05
Model context: 128K
Model output limit: 128K
Open weights: No
File attachments: No
Reasoning: No
Tool calling: Yes
Temperature control: Yes

Published benchmarks

Benchmark	Score	Evaluation details	Evidence
SWE-Bench Verified	61.6 · resolved	2025-07-10	Source

Complete source record (JSON)

{
  "id": "mistral/devstral-medium-2507",
  "name": "Devstral Medium",
  "description": "Mistral coding agent model for repository tasks and software engineering workflows",
  "family": "devstral",
  "last_updated": "2025-07-10",
  "knowledge": "2025-05",
  "attachment": false,
  "reasoning": false,
  "tool_call": true,
  "temperature": true,
  "modalities": {
    "input": [
      "text"
    ],
    "output": [
      "text"
    ]
  },
  "limit": {
    "context": 128000,
    "output": 128000
  },
  "benchmarks": [
    {
      "name": "SWE-Bench Verified",
      "score": 61.6,
      "source": "https://mistral.ai/news/devstral-2507",
      "metric": "resolved",
      "date": "2025-07-10"
    }
  ],
  "release_date": "2025-07-10",
  "open_weights": false
}

Infrastructure

Provider availability

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