Model Comparison

Claude Opus 4.5 vs Mistral Large 3Which is better in 2026?

Claude Opus 4.5 significantly outperforms across most benchmarks. Mistral Large 3 is 3.6x cheaper per token.

Verdict: Claude Opus 4.5 vs Mistral Large 3 — which is better?

Claude Opus 4.5 (by Anthropic) and Mistral Large 3 (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.

Claude Opus 4.5 outperforms in 1 benchmarks (MMMLU), while Mistral Large 3 is better at 0 benchmarks. Claude Opus 4.5 significantly outperforms across most benchmarks.

On price, Mistral Large 3 is roughly 3.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Opus 4.5 also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude Opus 4.5 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you process long inputs — it offers a 200,000 token context window
  • you want the most recent training data — it shipped Nov 2025

Choose Mistral Large 3 if…

  • cost matters — it's about 3.6x cheaper per token
  • 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

Claude Opus 4.5 outperforms in 1 benchmarks (MMMLU), while Mistral Large 3 is better at 0 benchmarks.

Claude Opus 4.5 significantly outperforms across most benchmarks.

Sat Jun 06 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Mistral Large 3 costs less

For input processing, Claude Opus 4.5 ($5.00/1M tokens) is 2.5x more expensive than Mistral Large 3 ($2.00/1M tokens).

For output processing, Claude Opus 4.5 ($25.00/1M tokens) is 5.0x more expensive than Mistral Large 3 ($5.00/1M tokens).

In conclusion, Claude Opus 4.5 is more expensive than Mistral Large 3.*

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

Lowest available price from all providers
Sat Jun 06 2026 • llm-stats.com
Anthropic
Claude Opus 4.5
Input tokens$5.00
Output tokens$25.00
Best providerAnthropic
Mistral AI
Mistral Large 3
Input tokens$2.00
Output tokens$5.00
Best providerMistral
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Opus 4.5 accepts 200,000 input tokens compared to Mistral Large 3's 128,000 tokens. Claude Opus 4.5 can generate longer responses up to 64,000 tokens, while Mistral Large 3 is limited to 8,192 tokens.

Anthropic
Claude Opus 4.5
Input200,000 tokens
Output64,000 tokens
Mistral AI
Mistral Large 3
Input128,000 tokens
Output8,192 tokens
Sat Jun 06 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4.5 and Mistral Large 3 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 Large 3

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 4.5 is licensed under a proprietary license, while Mistral Large 3 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 Large 3

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while Mistral Large 3 was released on 2025-09-01.

Claude Opus 4.5 is 3 months newer than Mistral Large 3.

Claude Opus 4.5

Nov 24, 2025

6 months ago

2mo newer
Mistral Large 3

Sep 1, 2025

9 months ago

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a documented knowledge cutoff of 2025-03-31, while Mistral Large 3'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 Large 3's cutoff date.

Claude Opus 4.5

Mar 2025

Mistral Large 3

—

Provider Availability

Claude Opus 4.5 is available from Anthropic. Mistral Large 3 is available from Mistral AI.

Claude Opus 4.5

anthropic logo
Anthropic
Input Price:Input: $5.00/1MOutput Price:Output: $25.00/1M

Mistral Large 3

mistral logo
Mistral
Input Price:Input: $2.00/1MOutput Price:Output: $5.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Higher MMMLU score (90.8% vs 74.2%)
Mistral AI
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.5
Mistral AI
Mistral Large 3

FAQ

Common questions about Claude Opus 4.5 vs Mistral Large 3.

Which is better, Claude Opus 4.5 or Mistral Large 3?

Claude Opus 4.5 significantly outperforms across most benchmarks. Claude Opus 4.5 is made by Anthropic and Mistral Large 3 is made by Mistral AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Opus 4.5 compare to Mistral Large 3 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%. Mistral Large 3 scores MATH: 90.4%, MM-MT-Bench: 84.9%, MMLU-Redux: 82.0%, TriviaQA: 74.9%, MMMLU: 74.2%.

Is Claude Opus 4.5 cheaper than Mistral Large 3?

Mistral Large 3 is 2.5x cheaper for input tokens. Claude Opus 4.5 costs $5.00/M input and $25.00/M output via anthropic. Mistral Large 3 costs $2.00/M input and $5.00/M output via mistral.

What are the context window sizes for Claude Opus 4.5 and Mistral Large 3?

Claude Opus 4.5 supports 200K tokens and Mistral Large 3 supports 128K 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 Mistral Large 3?

Key differences include context window (200K vs 128K), input pricing ($5.00 vs $2.00/M), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.5 and Mistral Large 3?

Claude Opus 4.5 is developed by Anthropic and Mistral Large 3 is developed by Mistral AI.

Related comparisons