Mistral Small 3.1 API

About Mistral Small 3.1

24B-parameter multimodal model with 128K context for image analysis, programming, math, and multilingual tasks, tuned for efficient local inference.

Also known as Mistral Small, Mistral-Small-3.1

Mistral Small 3.1 specs

Model ID

mistral-small-3-1

Provider

Mistral AI

Category

Text Generation

Context window

128K tokens

Max output

32,000 tokens

Input

text, image

Output

text

Endpoints

POST /v1/chat/completions
POST /v1/responses
POST /v1/messages

Mistral Small 3.1 API pricing

Live pay-as-you-go rates from the EmpirioLabs catalog. You are billed only for what you use, with no monthly minimum.

How to call the Mistral Small 3.1 API

Mistral Small 3.1 serves the OpenAI-compatible Chat Completions API. Point any OpenAI SDK at https://api.empiriolabs.ai/v1 with your EmpirioLabs API key and use the model id mistral-small-3-1. Get an API key from the EmpirioLabs dashboard.

curl https://api.empiriolabs.ai/v1/chat/completions \
  -H "Authorization: Bearer $EMPIRIOLABS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "mistral-small-3-1",
    "messages": [
      {"role": "user", "content": "Write a haiku about the ocean."}
    ]
  }'

from openai import OpenAI

client = OpenAI(
    base_url="https://api.empiriolabs.ai/v1",
    api_key="YOUR_EMPIRIOLABS_API_KEY",
)

response = client.chat.completions.create(
    model="mistral-small-3-1",
    messages=[{"role": "user", "content": "Write a haiku about the ocean."}],
)
print(response.choices[0].message.content)

Mistral Small 3.1 API parameters

Request parameters supported by the Mistral Small 3.1 API on EmpirioLabs. Defaults apply when a field is omitted.

Mistral Small 3.1 API: common questions

How much does the Mistral Small 3.1 API cost?

On EmpirioLabs, Mistral Small 3.1 is billed pay as you go: Per Message $0.0019 fixed; Web Search (Linkup) $0.013 per call when invoked. The live rate card on this page always matches what the API charges.

What is the context window of Mistral Small 3.1?

Mistral Small 3.1 supports a 128K-token context window with up to 32,000 output tokens per response.

Is the Mistral Small 3.1 API OpenAI-compatible?

Yes. Mistral Small 3.1 serves the OpenAI-compatible Chat Completions API, so existing OpenAI SDKs work by pointing base_url at https://api.empiriolabs.ai/v1 and setting the model id to mistral-small-3-1.

Can I try Mistral Small 3.1 in the browser before integrating?

Yes. The EmpirioLabs playground runs Mistral Small 3.1 in the browser with the same parameters the API exposes, so you can test prompts before writing code.

How do I get a Mistral Small 3.1 API key?

Create an EmpirioLabs account, then generate a key under API Keys in the dashboard. Billing is pay-as-you-go credits, so you only pay for the requests you make.