Model Comparison

GPT-5.4 vs Mistral Small 3.1 24B InstructWhich is better in 2026?

GPT-5.4 significantly outperforms across most benchmarks.

Verdict: GPT-5.4 vs Mistral Small 3.1 24B Instruct — which is better?

GPT-5.4 (by OpenAI) and Mistral Small 3.1 24B Instruct (by Mistral AI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

GPT-5.4 outperforms in 1 benchmarks (GPQA), while Mistral Small 3.1 24B Instruct is better at 0 benchmarks. GPT-5.4 significantly outperforms across most benchmarks.

Choose GPT-5.4 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you want the most recent training data — it shipped Mar 2026

Choose Mistral Small 3.1 24B Instruct if…

  • you need open weights you can self-host or fine-tune
Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

GPT-5.4 outperforms in 1 benchmarks (GPQA), while Mistral Small 3.1 24B Instruct is better at 0 benchmarks.

GPT-5.4 significantly outperforms across most benchmarks.

Sun Jun 07 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only GPT-5.4 specifies input context (1,000,000 tokens). Only GPT-5.4 specifies output context (128,000 tokens).

OpenAI
GPT-5.4
Input1,000,000 tokens
Output128,000 tokens
Mistral AI
Mistral Small 3.1 24B Instruct
Input- tokens
Output- tokens
Sun Jun 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-5.4 and Mistral Small 3.1 24B Instruct support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

GPT-5.4

Text
Images
Audio
Video

Mistral Small 3.1 24B Instruct

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-5.4 is licensed under a proprietary license, while Mistral Small 3.1 24B Instruct uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

GPT-5.4

Proprietary

Closed source

Mistral Small 3.1 24B Instruct

Apache 2.0

Open weights

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while Mistral Small 3.1 24B Instruct was released on 2025-03-17.

GPT-5.4 is 12 months newer than Mistral Small 3.1 24B Instruct.

GPT-5.4

Mar 5, 2026

3 months ago

11mo newer
Mistral Small 3.1 24B Instruct

Mar 17, 2025

1.2 years ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Larger context window (1,000,000 tokens)
Higher GPQA score (92.8% vs 46.0%)
Mistral AI
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-5.4
Mistral AI
Mistral Small 3.1 24B Instruct

FAQ

Common questions about GPT-5.4 vs Mistral Small 3.1 24B Instruct.

Which is better, GPT-5.4 or Mistral Small 3.1 24B Instruct?

GPT-5.4 significantly outperforms across most benchmarks. GPT-5.4 is made by OpenAI and Mistral Small 3.1 24B Instruct is made by Mistral AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-5.4 compare to Mistral Small 3.1 24B Instruct in benchmarks?

GPT-5.4 scores Tau2 Telecom: 98.9%, ARC-AGI: 93.7%, Graphwalks BFS <128k: 93.0%, GPQA: 92.8%, Graphwalks parents <128k: 89.8%. Mistral Small 3.1 24B Instruct scores HumanEval: 88.4%, MMLU: 80.6%, TriviaQA: 80.5%, MBPP: 74.7%, MATH: 69.3%.

What are the context window sizes for GPT-5.4 and Mistral Small 3.1 24B Instruct?

GPT-5.4 supports 1.0M tokens and Mistral Small 3.1 24B Instruct supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-5.4 and Mistral Small 3.1 24B Instruct?

Key differences include licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5.4 and Mistral Small 3.1 24B Instruct?

GPT-5.4 is developed by OpenAI and Mistral Small 3.1 24B Instruct is developed by Mistral AI.

Related comparisons