What is the context window of Mistral: Mistral Small 3.1 24B?

Mistral: Mistral Small 3.1 24B supports a context window of 128K tokens.

Is Mistral: Mistral Small 3.1 24B free to use?

Mistral: Mistral Small 3.1 24B is a paid model. It costs $0.351 per million input tokens and $0.555 per million output tokens.

How is LLM API pricing calculated?

LLM pricing has two components: input tokens (everything you send) and output tokens (what the model generates). Total cost = (prompt tokens × input rate + output tokens × output rate) / 1,000,000 × number of requests.

Mistral: Mistral Small 3.1 24B API Pricing — $0.351 Input / $0.555 Output per 1M Tokens

Q: How much does Mistral: Mistral Small 3.1 24B cost?

Mistral: Mistral Small 3.1 24B costs $0.351 per million input tokens and $0.555 per million output tokens via OpenRouter. Pricing was last updated Oct 29, 2026.

Mistral: Mistral Small 3.1 24B by Mistral AI — $0.351 input / $0.555 output per 1M tokens via OpenRouter. Context: 128K tokens. Pricing last updated Oct 29, 2026.

Input / 1M tokens

$0.351

Output / 1M tokens

$0.555

Provider

Mistral AI

Context window

128K tokens

Via

OpenRouter

Cost at common usage volumes

Usage	Daily	Monthly
Chatbot (100/day)	$0.087	$2.61
Small app (1K/day)	$0.628	$18.85
Mid-scale (10K/day)	$9.79	$293.85
Large scale (100K/day)	$231.00	$6930.00

Model ID: mistralai/mistral-small-3.1-24b-instruct
Data source: OpenRouter public API — updated Oct 29, 2026.

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About Mistral: Mistral Small 3.1 24B

Mistral: Mistral Small 3.1 24B is an LLM developed by Mistral AI. Input costs $0.351 per million tokens and output costs $0.555 per million tokens via OpenRouter. It supports a context window of 128K tokens.

Pricing Details

Via the OpenRouter API:

Input tokens: $0.351 per 1 million tokens
Output tokens: $0.555 per 1 million tokens

A token is roughly 0.75 words. For context: a typical user message of 100 words is approximately 133 tokens; a 500-word system prompt is about 650 tokens.

How Much Does Mistral: Mistral Small 3.1 24B Cost?

For a typical chatbot application (1,000 requests/day, 1,000 prompt tokens and 500 output tokens per request):

Daily cost: $0.6285
Monthly cost: $18.855

Accessing Mistral: Mistral Small 3.1 24B via OpenRouter

OpenRouter provides a unified API for 200+ LLMs including Mistral: Mistral Small 3.1 24B. You can use it with any OpenAI-compatible SDK by setting the base URL to https://openrouter.ai/api/v1 and using your OpenRouter API key. The model ID is mistralai/mistral-small-3.1-24b-instruct.

Compare Mistral: Mistral Small 3.1 24B with Other Models

Use the AI Model Cost Comparison tool to compare Mistral: Mistral Small 3.1 24B against GPT-4o, Claude 3.5 Sonnet, Gemini 1.5 Pro, or any other model side by side. Or use the LLM API Cost Calculator to browse all 456+ models sorted by cost for your specific usage.

Frequently Asked Questions

Yes. Mistral: Mistral Small 3.1 24B is available on OpenRouter with the model ID mistralai/mistral-small-3.1-24b-instruct. OpenRouter provides a unified API compatible with OpenAI's SDK format.