Model Comparison

Claude Opus 4.5 vs MiniStral 3 (14B Instruct 2512)Which is better in 2026?

Comparing Claude Opus 4.5 and MiniStral 3 (14B Instruct 2512) across benchmarks, pricing, and capabilities.

Verdict: Claude Opus 4.5 vs MiniStral 3 (14B Instruct 2512) — which is better?

Claude Opus 4.5 (by Anthropic) and MiniStral 3 (14B Instruct 2512) (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.

Choose Claude Opus 4.5 if…

  • you want predictable pricing at $5.00/M input and $25.00/M output

Choose MiniStral 3 (14B Instruct 2512) if…

  • you want the most recent training data — it shipped Dec 2025
  • you need open weights you can self-host or fine-tune
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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude Opus 4.5 and MiniStral 3 (14B Instruct 2512) don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Claude Opus 4.5 specifies input context (200,000 tokens). Only Claude Opus 4.5 specifies output context (64,000 tokens).

Anthropic
Claude Opus 4.5
Input200,000 tokens
Output64,000 tokens
Mistral AI
MiniStral 3 (14B Instruct 2512)
Input- tokens
Output- tokens
Sun Jun 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4.5 and MiniStral 3 (14B Instruct 2512) 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

MiniStral 3 (14B Instruct 2512)

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 4.5 is licensed under a proprietary license, while MiniStral 3 (14B Instruct 2512) 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

MiniStral 3 (14B Instruct 2512)

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while MiniStral 3 (14B Instruct 2512) was released on 2025-12-04.

MiniStral 3 (14B Instruct 2512) is 0 month newer than Claude Opus 4.5.

Claude Opus 4.5

Nov 24, 2025

6 months ago

MiniStral 3 (14B Instruct 2512)

Dec 4, 2025

6 months ago

1w newer

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a documented knowledge cutoff of 2025-03-31, while MiniStral 3 (14B Instruct 2512)'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 MiniStral 3 (14B Instruct 2512)'s cutoff date.

Claude Opus 4.5

Mar 2025

MiniStral 3 (14B Instruct 2512)

—

Outputs Comparison

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Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Mistral AI
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.5
Mistral AI
MiniStral 3 (14B Instruct 2512)

FAQ

Common questions about Claude Opus 4.5 vs MiniStral 3 (14B Instruct 2512).

Which is better, Claude Opus 4.5 or MiniStral 3 (14B Instruct 2512)?

Claude Opus 4.5 (Anthropic) and MiniStral 3 (14B Instruct 2512) (Mistral AI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Claude Opus 4.5 compare to MiniStral 3 (14B Instruct 2512) in benchmarks?

Claude Opus 4.5 scores Tau2 Telecom: 98.2%, MMMLU: 90.8%, Tau2 Retail: 88.9%, GPQA: 87.0%, SWE-Bench Verified: 80.9%. MiniStral 3 (14B Instruct 2512) scores MATH: 90.4%, Wild Bench: 68.5%, Arena Hard: 55.1%, MM-MT-Bench: 8.5%.

What are the context window sizes for Claude Opus 4.5 and MiniStral 3 (14B Instruct 2512)?

Claude Opus 4.5 supports 200K tokens and MiniStral 3 (14B Instruct 2512) 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 Claude Opus 4.5 and MiniStral 3 (14B Instruct 2512)?

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

Who makes Claude Opus 4.5 and MiniStral 3 (14B Instruct 2512)?

Claude Opus 4.5 is developed by Anthropic and MiniStral 3 (14B Instruct 2512) is developed by Mistral AI.

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