Mistral Small 4

mistral-small-2603

Mistral Small 4 is the latest release in the Mistral Small family, unifying capabilities from multiple flagship models into a single system. It integrates strong reasoning (Magistral), multimodal understanding (Pixtral), and agentic coding capabilities (Devstral), enabling a versatile, all-in-one model. Designed to handle complex analysis, software development, and visual tasks within the same workflow, Mistral Small 4 is well suited for integrated agentic applications and end-to-end problem solving across domains.

Context: 262.1K tokens
Endpoint

Pricing

Input$0.15 / 1M

Output$0.60 / 1M

Cache Write (5m)$0.15 / 1M

Cache Write (1h)$0.15 / 1M

Cache Read$0.15 / 1M

Web Search$0 / 1M

Quick Start

Select an endpoint and copy a working example for this model.

Endpoint

python

from openai import OpenAI client = OpenAI(    api_key="YOUR_API_KEY",    base_url="https://api.apertis.ai/v1") response = client.chat.completions.create(    model="mistral-small-2603",    messages=[        {"role": "user", "content": "Hello!"}    ],    max_tokens=1024,    temperature=0.7) print(response.choices[0].message.content) # Optional: Enable context compression to reduce token usage# response = client.chat.completions.create(#     model="mistral-small-2603",#     messages=[{"role": "user", "content": "Hello!"}],#     extra_body={"compression": {"enabled": True, "model": "gpt-4.1-mini"}}# )

Supported Parameters

API docs

Common7 params

modelmessagesmax_tokenstemperaturetop_pstreamtools

Extended4 params

reasoning_effortstream_optionsthinkingextra_body

Cursor IDE Model IDs

Use these namespaced identifiers in Cursor IDE to avoid conflicts with built-in models.

mistral-small-2603

Questions about Mistral Small 4

How much does Mistral Small 4 cost on Apertis?

Mistral Small 4 costs $0.15 per 1M input tokens and $0.60 per 1M output tokens on Apertis.

What is Mistral Small 4's context window?

Mistral Small 4 has a context window of 262.1K tokens.

Which company develops Mistral Small 4?

Mistral Small 4 is developed by Mistral AI.

Which model ID do I use to call Mistral Small 4?

Use the model ID mistral-small-2603 to call Mistral Small 4.

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