Small 3.1 24B API

mistralai/mistral-small-3.1-24b-instruct
Small 3.1 24B on AIMLAPI.
Context
128K tokens
Input
$0.4827654 / 1M tokens
Output
$0.763347 / 1M tokens

How to use Small 3.1 24B API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to mistralai/mistral-small-3.1-24b-instruct.
import requests

r = requests.post(
    "https://api.aimlapi.com/v1/chat/completions",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "mistralai/mistral-small-3.1-24b-instruct",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ]
    },
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "mistralai/mistral-small-3.1-24b-instruct",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ]
  }),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"mistralai/mistral-small-3.1-24b-instruct","messages":[{"role":"user","content":"Hello!"}]}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

Small 3.1 24B API Pricing

TypePrice
Input
$0.4827654 / 1M tokens
Output
$0.763347 / 1M tokens

Small 3.1 24B Benchmarks

BenchmarkScoreWhat it measuresSourceRetrieved
MMMU
64%
College-level multimodal understanding + reasoningSourceJuly 12, 2026
MMLU-Pro
66.76%
Multi-discipline knowledge + reasoning (harder MMLU)SourceJuly 12, 2026
GPQA Diamond
45.96%
Google-proof graduate science questions (hardest subset)SourceJuly 12, 2026

Small 3.1 24B vs other models

ModelInputOutputContextBest for
Small 3.1 24B
This page
$0.4827654 / 1M tokens
$0.763347 / 1M tokens
128K tokens
Reasoning + agents
$6.5 / 1M tokens
$39 / 1M tokens
1.05M tokens
Reasoning + agents
$2.6 / 1M tokens
$13 / 1M tokens
1M tokens
Balanced coding + agents
$3.9 / 1M tokens
$19.5 / 1M tokens
1M tokens
Long-context, multimodal & agentic workflows
$0.65 / 1M tokens
$3.9 / 1M tokens
1.05M tokens
Reasoning + agents

Frequently asked questions

Small 3.1 24B has a 128,000 tokens context window and can return up to 128,000 tokens.

Small 3.1 24B takes image, text as input and returns text.

Use mistralai/mistral-small-3.1-24b-instruct as the model id. Requests go to https://api.aimlapi.com/v1/chat/completions.

Small 3.1 24B is priced at input $0.4827654 / 1M tokens, output $0.763347 / 1M tokens.

Yes, Small 3.1 24B can stream responses as they are generated.

Yes, Small 3.1 24B accepts image input alongside text.

Small 3.1 24B was built by Mistral AI.

Yes, it supports function calling, parallel tool calls, and structured outputs.

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