Devstral Medium API — pricing & specs
Mistral AI's Devstral — tuned for agentic software-engineering and coding-agent workflows; the medium tier, tracking the newest release. On KeepRouter, Devstral Medium costs $0.40 per 1M input tokens and $2 per 1M output tokens, billed at cost with no markup and no monthly fee. Call it through the OpenAI- or Anthropic-compatible API with the model id devstral-medium-latest.
| Maker | Mistral AI |
|---|---|
| Modality | Text |
| Input price | $0.40 per 1M tokens |
| Output price | $2 per 1M tokens |
| Capabilities | Streaming, Tool / function calling |
| APIs | OpenAI-compatible & Anthropic-compatible |
| Model id | devstral-medium-latest |
How pricing works for Devstral Medium
Devstral Medium is billed per token — $0.40 per 1M input tokens and $2 per 1M output tokens. As a worked example, a 1,000-token prompt with a 500-token reply costs about $0.0014. All prices are at cost (a 0% markup) with no monthly fee.
Calling Devstral Medium on KeepRouter
Point your OpenAI- or Anthropic-compatible client at KeepRouter, set the model to devstral-medium-latest, and keep the rest of your code unchanged. Streaming and tool calling work over both APIs.
cURL
curl https://keeprouter.com/v1/chat/completions \
-H "Authorization: Bearer $KEEPROUTER_KEY" -H "Content-Type: application/json" \
-d '{"model":"devstral-medium-latest","messages":[{"role":"user","content":"Hello"}]}'Python
from openai import OpenAI
client = OpenAI(base_url="https://keeprouter.com/v1", api_key="$KEEPROUTER_KEY")
r = client.chat.completions.create(model="devstral-medium-latest", messages=[{"role":"user","content":"Hello"}])JavaScript
import OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://keeprouter.com/v1", apiKey: process.env.KEEPROUTER_KEY });
const r = await client.chat.completions.create({ model: "devstral-medium-latest", messages: [{ role: "user", content: "Hello" }] });Frequently asked questions
How much does Devstral Medium cost on KeepRouter?
Devstral Medium is $0.40 per 1M input tokens and $2 per 1M output tokens, billed at cost with no markup and no monthly fee.
How much does a typical Devstral Medium request cost?
On KeepRouter, a 1,000-token prompt with a 500-token reply costs about $0.0014 — billed at cost with no markup.
Who makes Devstral Medium?
Devstral Medium is made by Mistral AI. KeepRouter provides it through one OpenAI- and Anthropic-compatible API.
How do I call Devstral Medium via API?
Point your OpenAI- or Anthropic-compatible client at KeepRouter and set the model to "devstral-medium-latest". It works with the OpenAI SDK, the Anthropic SDK, and Claude Code — no provider-specific SDK needed.
Does Devstral Medium support streaming?
Yes. KeepRouter streams Devstral Medium responses over both the OpenAI and Anthropic APIs.
Does Devstral Medium support tool (function) calling?
Yes. KeepRouter passes tool calls through to Devstral Medium and translates them between the OpenAI and Anthropic formats.
Guides
Related models from Mistral AI
- Codestral — $0.30 per 1M input tokens and $0.90 per 1M output tokens
- Magistral Medium — $2 per 1M input tokens and $5 per 1M output tokens
- Magistral Small — $0.50 per 1M input tokens and $1.50 per 1M output tokens
- Ministral 14B — $0.20 per 1M input tokens and $0.20 per 1M output tokens
- Ministral 3B — $0.10 per 1M input tokens and $0.10 per 1M output tokens
- Ministral 8B — $0.15 per 1M input tokens and $0.15 per 1M output tokens
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Prices as of 2026-07-05.