Devstral Small

MistralMCP Tool Call

mistral/devstral-small-2507Open Weights

Mistral coding agent model for repository tasks and software engineering workflows

Benchmark Pricing$0.10 / 1M in$0.30 / 1M out

Context: 128,000 tokens•Max Output: 128,000 tokens•Knowledge: 2025-05•Released: 2025-07-10

TECHNICAL SPECIFICATIONS

Context Window128,000128K tokens

Max Output128,000128K tokens

LicenseOpen SourceSelf-hostable

Input Modalities

Text

Function / Tool CallingSupported (MCP Ready)

Structured OutputsGuaranteed Schema

MODEL CONTEXT PROTOCOL (MCP) READINESS

✓ Devstral Small natively supports OpenAI / Anthropic format tool calling and is fully compatible with MCP servers and agent loops.

MCP Context Window Recommendations

With a context capacity of 128,000 tokens, this model can handle moderately large MCP tool definitions and multi-turn conversation logs comfortably.

STANDARDIZED BENCHMARKS & EVALS

SWE-Bench Verifiedresolved

53.6

API CALL INVOCATION EXAMPLE

// Example: Calling Devstral Small via OpenAI SDK
import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.MISTRAL_API_KEY,
});

const response = await client.chat.completions.create({
  model: "mistral/devstral-small-2507",
  messages: [{ role: "user", content: "Hello! Can you inspect MCP tools?" }],
});

console.log(response.choices[0].message.content);