Model Card for Mistral-Small-24B-Instruct-2501

Mistral Small 3 ( 2501 ) sets a new benchmark in the "small" Large Language Models category below 70B, boasting 24B parameters and achieving state-of-the-art capabilities comparable to larger models!
This model is an instruction-fine-tuned version of the base model: Mistral-Small-24B-Base-2501.

Mistral Small can be deployed locally and is exceptionally "knowledge-dense", fitting in a single RTX 4090 or a 32GB RAM MacBook once quantized.
Perfect for:

• Fast response conversational agents.
• Low latency function calling.
• Subject matter experts via fine-tuning.
• Local inference for hobbyists and organizations handling sensitive data.

For enterprises that need specialized capabilities (increased context, particular modalities, domain specific knowledge, etc.), we will be releasing commercial models beyond what Mistral AI contributes to the community.

This release demonstrates our commitment to open source, serving as a strong base model.

Learn more about Mistral Small in our blog post.

Model developper: Mistral AI Team

Key Features

• Multilingual: Supports dozens of languages, including English, French, German, Spanish, Italian, Chinese, Japanese, Korean, Portuguese, Dutch, and Polish.
• Agent-Centric: Offers best-in-class agentic capabilities with native function calling and JSON outputting.
• Advanced Reasoning: State-of-the-art conversational and reasoning capabilities.
• Apache 2.0 License: Open license allowing usage and modification for both commercial and non-commercial purposes.
• Context Window: A 32k context window.
• System Prompt: Maintains strong adherence and support for system prompts.
• Tokenizer: Utilizes a Tekken tokenizer with a 131k vocabulary size.

Benchmark results

Human evaluated benchmarks

Category	Gemma-2-27B	Qwen-2.5-32B	Llama-3.3-70B	Gpt4o-mini
Mistral is better	0.536	0.496	0.192	0.200
Mistral is slightly better	0.196	0.184	0.164	0.204
Ties	0.052	0.060	0.236	0.160
Other is slightly better	0.060	0.088	0.112	0.124
Other is better	0.156	0.172	0.296	0.312

Note:

• We conducted side by side evaluations with an external third-party vendor, on a set of over 1k proprietary coding and generalist prompts.
• Evaluators were tasked with selecting their preferred model response from anonymized generations produced by Mistral Small 3 vs another model.
• We are aware that in some cases the benchmarks on human judgement starkly differ from publicly available benchmarks, but have taken extra caution in verifying a fair evaluation. We are confident that the above benchmarks are valid.

Publicly accesible benchmarks

Reasoning & Knowledge

Evaluation	mistral-small-24B-instruct-2501	gemma-2b-27b	llama-3.3-70b	qwen2.5-32b	gpt-4o-mini-2024-07-18
mmlu_pro_5shot_cot_instruct	0.663	0.536	0.666	0.683	0.617
gpqa_main_cot_5shot_instruct	0.453	0.344	0.531	0.404	0.377

Math & Coding

Evaluation	mistral-small-24B-instruct-2501	gemma-2b-27b	llama-3.3-70b	qwen2.5-32b	gpt-4o-mini-2024-07-18
humaneval_instruct_pass@1	0.848	0.732	0.854	0.909	0.890
math_instruct	0.706	0.535	0.743	0.819	0.761

Instruction following

Evaluation	mistral-small-24B-instruct-2501	gemma-2b-27b	llama-3.3-70b	qwen2.5-32b	gpt-4o-mini-2024-07-18
mtbench_dev	8.35	7.86	7.96	8.26	8.33
wildbench	52.27	48.21	50.04	52.73	56.13
arena_hard	0.873	0.788	0.840	0.860	0.897
ifeval	0.829	0.8065	0.8835	0.8401	0.8499

Note:

• Performance accuracy on all benchmarks were obtained through the same internal evaluation pipeline - as such, numbers may vary slightly from previously reported performance (Qwen2.5-32B-Instruct, Llama-3.3-70B-Instruct, Gemma-2-27B-IT).
• Judge based evals such as Wildbench, Arena hard and MTBench were based on gpt-4o-2024-05-13.

Basic Instruct Template (V7-Tekken)

<s>[SYSTEM_PROMPT]<system prompt>[/SYSTEM_PROMPT][INST]<user message>[/INST]<assistant response></s>[INST]<user message>[/INST]

<system_prompt>, <user message> and <assistant response> are placeholders.

Please make sure to use mistral-common as the source of truth

Usage

The model can be used with the following frameworks;

• vllm: See here
• transformers: See here

vLLM

We recommend using this model with the vLLM library to implement production-ready inference pipelines.

Note 1: We recommond using a relatively low temperature, such as temperature=0.15.

Note 2: Make sure to add a system prompt to the model to best tailer it for your needs. If you want to use the model as a general assistant, we recommend the following system prompt:

system_prompt = """You are Mistral Small 3, a Large Language Model (LLM) created by Mistral AI, a French startup headquartered in Paris.
Your knowledge base was last updated on 2023-10-01. The current date is 2025-01-30.
When you're not sure about some information, you say that you don't have the information and don't make up anything.
If the user's question is not clear, ambiguous, or does not provide enough context for you to accurately answer the question, you do not try to answer it right away and you rather ask the user to clarify their request (e.g. \"What are some good restaurants around me?\" => \"Where are you?\" or \"When is the next flight to Tokyo\" => \"Where do you travel from?\")"""

Installation

Make sure you install vLLM >= 0.6.4:

pip install --upgrade vllm

Also make sure you have mistral_common >= 1.5.2 installed:

pip install --upgrade mistral_common

You can also make use of a ready-to-go docker image or on the docker hub.

Server

We recommand that you use Mistral-Small-24B-Instruct-2501 in a server/client setting.

1. Spin up a server:

vllm serve mistralai/Mistral-Small-24B-Instruct-2501 --tokenizer_mode mistral --config_format mistral --load_format mistral --tool-call-parser mistral --enable-auto-tool-choice

Note: Running Mistral-Small-24B-Instruct-2501 on GPU requires ~55 GB of GPU RAM in bf16 or fp16.

2. To ping the client you can use a simple Python snippet.

import requests
import json
from datetime import datetime, timedelta

url = "http://<your-server>:8000/v1/chat/completions"
headers = {"Content-Type": "application/json", "Authorization": "Bearer token"}

model = "mistralai/Mistral-Small-24B-Instruct-2501"

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