Claude Opus 4.5 vs Mistral Small 3.1 24B Base Comparison

Comparing Claude Opus 4.5 and Mistral Small 3.1 24B Base across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude Opus 4.5 outperforms in 1 benchmarks (GPQA), while Mistral Small 3.1 24B Base is better at 0 benchmarks.

Claude Opus 4.5 significantly outperforms across most benchmarks.

Mon Mar 16 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Mistral Small 3.1 24B Base costs less

For input processing, Claude Opus 4.5 ($5.00/1M tokens) is 50.0x more expensive than Mistral Small 3.1 24B Base ($0.10/1M tokens).

For output processing, Claude Opus 4.5 ($25.00/1M tokens) is 83.3x more expensive than Mistral Small 3.1 24B Base ($0.30/1M tokens).

In conclusion, Claude Opus 4.5 is more expensive than Mistral Small 3.1 24B Base.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Mon Mar 16 2026 • llm-stats.com

Claude Opus 4.5

Input tokens$5.00

Output tokens$25.00

Best providerAnthropic

Mistral Small 3.1 24B Base

Input tokens$0.10

Output tokens$0.30

Best providerMistral

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Context Window

Maximum input and output token capacity

Claude Opus 4.5 accepts 200,000 input tokens compared to Mistral Small 3.1 24B Base's 128,000 tokens. Mistral Small 3.1 24B Base can generate longer responses up to 128,000 tokens, while Claude Opus 4.5 is limited to 64,000 tokens.

Claude Opus 4.5

Input200,000 tokens

Output64,000 tokens

Mistral Small 3.1 24B Base

Input128,000 tokens

Output128,000 tokens

Mon Mar 16 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4.5 and Mistral Small 3.1 24B Base support multimodal inputs.

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

Claude Opus 4.5

Text

Images

Audio

Video

Mistral Small 3.1 24B Base

Text

Images

Audio

Video

License

Usage and distribution terms

Claude Opus 4.5 is licensed under a proprietary license, while Mistral Small 3.1 24B Base uses Apache 2.0.

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

Claude Opus 4.5

Proprietary

Closed source

Mistral Small 3.1 24B Base

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while Mistral Small 3.1 24B Base was released on 2025-03-17.

Claude Opus 4.5 is 8 months newer than Mistral Small 3.1 24B Base.

Claude Opus 4.5

Nov 24, 2025

3 months ago

8mo newer

Mistral Small 3.1 24B Base

Mar 17, 2025

12 months ago

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a documented knowledge cutoff of 2025-03-31, while Mistral Small 3.1 24B Base's cutoff date is not specified.

We can confirm Claude Opus 4.5's training data extends to 2025-03-31, but cannot make a direct comparison without Mistral Small 3.1 24B Base's cutoff date.

Claude Opus 4.5

Mar 2025

Mistral Small 3.1 24B Base

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Provider Availability

Claude Opus 4.5 is available from Anthropic. Mistral Small 3.1 24B Base is available from Mistral AI. The availability of providers can affect quality of the model and reliability.