Model Comparison

GPT-4.5 vs Mistral Small 3 24B Base

GPT-4.5 significantly outperforms across most benchmarks.

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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

GPT-4.5 outperforms in 3 benchmarks (GPQA, GSM8k, MMLU), while Mistral Small 3 24B Base is better at 0 benchmarks.

GPT-4.5 significantly outperforms across most benchmarks.

Thu May 14 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only GPT-4.5 specifies input context (128,000 tokens). Only GPT-4.5 specifies output context (4,096 tokens).

OpenAI
GPT-4.5
Input128,000 tokens
Output4,096 tokens
Mistral AI
Mistral Small 3 24B Base
Input- tokens
Output- tokens
Thu May 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-4.5 and Mistral Small 3 24B Base support multimodal inputs.

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

GPT-4.5

Text
Images
Audio
Video

Mistral Small 3 24B Base

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-4.5 is licensed under a proprietary license, while Mistral Small 3 24B Base uses Apache 2.0.

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

GPT-4.5

Proprietary

Closed source

Mistral Small 3 24B Base

Apache 2.0

Open weights

Release Timeline

When each model was launched

GPT-4.5 was released on 2025-02-27, while Mistral Small 3 24B Base was released on 2025-01-30.

GPT-4.5 is 1 month newer than Mistral Small 3 24B Base.

GPT-4.5

Feb 27, 2025

1.2 years ago

4w newer
Mistral Small 3 24B Base

Jan 30, 2025

1.3 years ago

Knowledge Cutoff

When training data ends

Mistral Small 3 24B Base has a documented knowledge cutoff of 2023-10-01, while GPT-4.5's cutoff date is not specified.

We can confirm Mistral Small 3 24B Base's training data extends to 2023-10-01, but cannot make a direct comparison without GPT-4.5's cutoff date.

GPT-4.5

—

Mistral Small 3 24B Base

Oct 2023

Outputs Comparison

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Key Takeaways

OpenAI
Larger context window (128,000 tokens)
Higher GPQA score (69.5% vs 34.4%)
Higher GSM8k score (97.0% vs 80.7%)
Higher MMLU score (90.8% vs 80.7%)
Mistral AI
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-4.5
Mistral AI
Mistral Small 3 24B Base

FAQ

Common questions about GPT-4.5 vs Mistral Small 3 24B Base.

Which is better, GPT-4.5 or Mistral Small 3 24B Base?

GPT-4.5 significantly outperforms across most benchmarks. GPT-4.5 is made by OpenAI and Mistral Small 3 24B Base is made by Mistral AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-4.5 compare to Mistral Small 3 24B Base in benchmarks?

GPT-4.5 scores GSM8k: 97.0%, MMLU: 90.8%, CharXiv-D: 90.0%, IFEval: 88.2%, HumanEval: 88.0%. Mistral Small 3 24B Base scores ARC-C: 91.3%, GSM8k: 80.7%, MMLU: 80.7%, TriviaQA: 80.3%, MBPP: 69.6%.

What are the context window sizes for GPT-4.5 and Mistral Small 3 24B Base?

GPT-4.5 supports 128K tokens and Mistral Small 3 24B Base 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-4.5 and Mistral Small 3 24B Base?

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

Who makes GPT-4.5 and Mistral Small 3 24B Base?

GPT-4.5 is developed by OpenAI and Mistral Small 3 24B Base is developed by Mistral AI.