Ministral 8B API — pricing & specs

Mistral AI's Ministral 8B — a compact, efficient edge-class model for fast, low-cost text tasks. On KeepRouter, Ministral 8B costs $0.15 per 1M input tokens and $0.15 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 ministral-8b-latest.

How pricing works for Ministral 8B

Ministral 8B is billed per token — $0.15 per 1M input tokens and $0.15 per 1M output tokens. As a worked example, a 1,000-token prompt with a 500-token reply costs about $0.0002. All prices are at cost (a 0% markup) with no monthly fee.

Calling Ministral 8B on KeepRouter

Point your OpenAI- or Anthropic-compatible client at KeepRouter, set the model to ministral-8b-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":"ministral-8b-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="ministral-8b-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: "ministral-8b-latest", messages: [{ role: "user", content: "Hello" }] });

Frequently asked questions

How much does Ministral 8B cost on KeepRouter?

Ministral 8B is $0.15 per 1M input tokens and $0.15 per 1M output tokens, billed at cost with no markup and no monthly fee.

How much does a typical Ministral 8B request cost?

On KeepRouter, a 1,000-token prompt with a 500-token reply costs about $0.0002 — billed at cost with no markup.

Who makes Ministral 8B?

Ministral 8B is made by Mistral AI. KeepRouter provides it through one OpenAI- and Anthropic-compatible API.

How do I call Ministral 8B via API?

Point your OpenAI- or Anthropic-compatible client at KeepRouter and set the model to "ministral-8b-latest". It works with the OpenAI SDK, the Anthropic SDK, and Claude Code — no provider-specific SDK needed.

Does Ministral 8B support streaming?

Yes. KeepRouter streams Ministral 8B responses over both the OpenAI and Anthropic APIs.

Does Ministral 8B support tool (function) calling?

Yes. KeepRouter passes tool calls through to Ministral 8B and translates them between the OpenAI and Anthropic formats.

Guides

• Call Ministral 8B with the OpenAI SDK
• Use Ministral 8B in Claude Code

Related models from Mistral AI

• Codestral — $0.30 per 1M input tokens and $0.90 per 1M output tokens
• Devstral Medium — $0.40 per 1M input tokens and $2 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

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Prices as of 2026-07-05.