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Claude Opus 5.5 vs Min istral 3 (3B Reasoning 2512)

Claude Opus 5.5 leads the LLM Stats Score 59.7 to 11.2. Min istral 3 (3B Reasoning 2512) is 80.0x cheaper per token.

Anthropic · Mistral AI · Updated for 2026

Which is better?

Claude Opus 5.5 leads the overall LLM Stats Score 59.7 to 11.2, ranking #1 overall.

On price, Min istral 3 (3B Reasoning 2512) is roughly 80.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Opus 5.5 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude Opus 5.5

  • overall performance matters — it scores 59.7 and ranks #1 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Sep 2026

Choose Min istral 3 (3B Reasoning 2512)

  • cost matters — it's about 80.0x cheaper per token
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Claude Opus 5.5
Anthropic
Min istral 3 (3B Reasoning 2512)
Mistral AI
Core performance indexes
LLM Stats Score
59.7
#1
11.2
#265
Reasoning
57.8
#1
11.4
#260
Coding
51.7
#1
6.8
#194
Cost, coverage & limits
Benchmark wins
—
—
Input price
$4.00 / M
$0.10 / M
Output price
$20.00 / M
$0.10 / M
Context window
1,000,000
131,100

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Claude Opus 5.5
Min istral 3 (3B Reasoning 2512)
Math
42.5#5
12.8#232
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

31 reported for Claude Opus 5.5 · 4 for Min istral 3 (3B Reasoning 2512)

No common benchmarks found

Claude Opus 5.5 and Min istral 3 (3B Reasoning 2512)don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Min istral 3 (3B Reasoning 2512) costs less

For input processing, Claude Opus 5.5 ($4.00/1M tokens) is 40.0x more expensive than Min istral 3 (3B Reasoning 2512) ($0.10/1M tokens).

For output processing, Claude Opus 5.5 ($20.00/1M tokens) is 200.0x more expensive than Min istral 3 (3B Reasoning 2512) ($0.10/1M tokens).

In conclusion, Claude Opus 5.5 is more expensive than Min istral 3 (3B Reasoning 2512).*

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

Lowest available price from all providers
Tue Sep 22 2026 • llm-stats.com
Anthropic
Claude Opus 5.5
Input tokens$4.00
Output tokens$20.00
Best providerAnthropic
Mistral AI
Min istral 3 (3B Reasoning 2512)
Input tokens$0.10
Output tokens$0.10
Best providerMistral
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Opus 5.5 accepts 1,000,000 input tokens compared to Min istral 3 (3B Reasoning 2512)'s 131,100 tokens. Min istral 3 (3B Reasoning 2512) can generate longer responses up to 131,100 tokens, while Claude Opus 5.5 is limited to 128,000 tokens.

Anthropic
Claude Opus 5.5
Input1,000,000 tokens
Output128,000 tokens
Mistral AI
Min istral 3 (3B Reasoning 2512)
Input131,100 tokens
Output131,100 tokens
Tue Sep 22 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Opus 5.5 and Min istral 3 (3B Reasoning 2512) support multimodal inputs.

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

Claude Opus 5.5

Text
Images
Audio
Video

Min istral 3 (3B Reasoning 2512)

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 5.5 is licensed under a proprietary license, while Min istral 3 (3B Reasoning 2512) uses Apache 2.0.

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

Claude Opus 5.5

Proprietary

Closed source

Min istral 3 (3B Reasoning 2512)

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Opus 5.5 was released on 2026-09-22, while Min istral 3 (3B Reasoning 2512) was released on 2025-12-04.

Claude Opus 5.5 is 10 months newer than Min istral 3 (3B Reasoning 2512).

Claude Opus 5.5

Sep 22, 2026

0 days ago

9mo newer
Min istral 3 (3B Reasoning 2512)

Dec 4, 2025

9 months ago

Knowledge Cutoff

When training data ends

Claude Opus 5.5 has a documented knowledge cutoff of 2026-06-01, while Min istral 3 (3B Reasoning 2512)'s cutoff date is not specified.

We can confirm Claude Opus 5.5's training data extends to 2026-06-01, but cannot make a direct comparison without Min istral 3 (3B Reasoning 2512)'s cutoff date.

Claude Opus 5.5

Jun 2026

Min istral 3 (3B Reasoning 2512)

—

Provider Availability

Claude Opus 5.5 is available from Anthropic. Min istral 3 (3B Reasoning 2512) is available from Mistral AI.

Claude Opus 5.5

anthropic logo
Anthropic
Input Price:Input: $4.00/1MOutput Price:Output: $20.00/1M

Min istral 3 (3B Reasoning 2512)

mistral logo
Mistral
Input Price:Input: $0.10/1MOutput Price:Output: $0.10/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude Opus 5.5 and Min istral 3 (3B Reasoning 2512) side-by-side, then vote on the output you prefer.

Claude Opus 5.5
✓ Preferred
Min istral 3 (3B Reasoning 2512)
Open in Playground

FAQ

Common questions about Claude Opus 5.5 vs Min istral 3 (3B Reasoning 2512).

Which is better, Claude Opus 5.5 or Min istral 3 (3B Reasoning 2512)?

Claude Opus 5.5 leads the LLM Stats Score 59.7 to 11.2. Claude Opus 5.5 is made by Anthropic and Min istral 3 (3B Reasoning 2512) is made by Mistral AI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Opus 5.5 compare to Min istral 3 (3B Reasoning 2512) in benchmarks?

Claude Opus 5.5 scores BenchCAD (with Python tool): 96.2%, Global-MMLU: 94.3%, SWE-bench Multilingual: 93.9%, MILU: 93.1%, ArXivMath: 91.2%. Min istral 3 (3B Reasoning 2512) scores AIME 2024: 77.5%, AIME 2025: 72.1%, LiveCodeBench: 54.8%, GPQA: 53.4%.

Is Claude Opus 5.5 cheaper than Min istral 3 (3B Reasoning 2512)?

Min istral 3 (3B Reasoning 2512) is 40.0x cheaper for input tokens. Claude Opus 5.5 costs $4.00/M input and $20.00/M output via anthropic. Min istral 3 (3B Reasoning 2512) costs $0.10/M input and $0.10/M output via mistral.

What are the context window sizes for Claude Opus 5.5 and Min istral 3 (3B Reasoning 2512)?

Claude Opus 5.5 supports 1.0M tokens and Min istral 3 (3B Reasoning 2512) supports 131K 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 5.5 and Min istral 3 (3B Reasoning 2512)?

Key differences include LLM Stats Score (59.7 vs 11.2), context window (1.0M vs 131K), input pricing ($4.00 vs $0.10/M), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 5.5 and Min istral 3 (3B Reasoning 2512)?

Claude Opus 5.5 is developed by Anthropic and Min istral 3 (3B Reasoning 2512) is developed by Mistral AI.

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