Model Comparison

Claude Opus 4.5 vs Qwen2 72B InstructWhich is better in 2026?

Claude Opus 4.5 significantly outperforms across most benchmarks.

Verdict: Claude Opus 4.5 vs Qwen2 72B Instruct — which is better?

Claude Opus 4.5 (by Anthropic) and Qwen2 72B Instruct (by Alibaba Cloud / Qwen Team) 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 (GPQA), while Qwen2 72B Instruct is better at 0 benchmarks. Claude Opus 4.5 significantly outperforms across most benchmarks.

Choose Claude Opus 4.5 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you want the most recent training data — it shipped Nov 2025

Choose Qwen2 72B Instruct if…

  • you need open weights you can self-host or fine-tune
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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude Opus 4.5 outperforms in 1 benchmarks (GPQA), while Qwen2 72B Instruct 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

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
Alibaba Cloud / Qwen Team
Qwen2 72B Instruct
Input- tokens
Output- tokens
Sat Jun 06 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Opus 4.5 supports multimodal inputs, whereas Qwen2 72B Instruct does not.

Claude Opus 4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 4.5

Text
Images
Audio
Video

Qwen2 72B Instruct

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 4.5 is licensed under a proprietary license, while Qwen2 72B Instruct uses tongyi-qianwen.

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

Claude Opus 4.5

Proprietary

Closed source

Qwen2 72B Instruct

tongyi-qianwen

Open weights

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while Qwen2 72B Instruct was released on 2024-07-23.

Claude Opus 4.5 is 16 months newer than Qwen2 72B Instruct.

Claude Opus 4.5

Nov 24, 2025

6 months ago

1.3yr newer
Qwen2 72B Instruct

Jul 23, 2024

1.9 years ago

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a documented knowledge cutoff of 2025-03-31, while Qwen2 72B Instruct'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 Qwen2 72B Instruct's cutoff date.

Claude Opus 4.5

Mar 2025

Qwen2 72B Instruct

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Outputs Comparison

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Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Supports multimodal inputs
Higher GPQA score (87.0% vs 42.4%)
Alibaba Cloud / Qwen Team

Qwen2 72B Instruct

View details

Alibaba Cloud / Qwen Team

Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.5
Alibaba Cloud / Qwen Team
Qwen2 72B Instruct

FAQ

Common questions about Claude Opus 4.5 vs Qwen2 72B Instruct.

Which is better, Claude Opus 4.5 or Qwen2 72B Instruct?

Claude Opus 4.5 significantly outperforms across most benchmarks. Claude Opus 4.5 is made by Anthropic and Qwen2 72B Instruct is made by Alibaba Cloud / Qwen Team. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Opus 4.5 compare to Qwen2 72B Instruct 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%. Qwen2 72B Instruct scores GSM8k: 91.1%, CMMLU: 90.1%, HellaSwag: 87.6%, HumanEval: 86.0%, Winogrande: 85.1%.

What are the context window sizes for Claude Opus 4.5 and Qwen2 72B Instruct?

Claude Opus 4.5 supports 200K tokens and Qwen2 72B Instruct 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 Qwen2 72B Instruct?

Key differences include multimodal support (yes vs no), licensing (Proprietary vs tongyi-qianwen). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.5 and Qwen2 72B Instruct?

Claude Opus 4.5 is developed by Anthropic and Qwen2 72B Instruct is developed by Alibaba Cloud / Qwen Team.

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