Model Comparison

Claude Opus 4.5 vs Qwen2.5 14B Instruct

Claude Opus 4.5 significantly outperforms across most benchmarks.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude Opus 4.5 outperforms in 1 benchmarks (GPQA), while Qwen2.5 14B Instruct is better at 0 benchmarks.

Claude Opus 4.5 significantly outperforms across most benchmarks.

Mon May 25 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).

Claude Opus 4.5

Input200,000 tokens

Output64,000 tokens

Qwen2.5 14B Instruct

Input- tokens

Output- tokens

Mon May 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Opus 4.5 supports multimodal inputs, whereas Qwen2.5 14B 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

Qwen2.5 14B Instruct

Text

Images

Audio

Video

License

Usage and distribution terms

Claude Opus 4.5 is licensed under a proprietary license, while Qwen2.5 14B Instruct 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

Qwen2.5 14B Instruct

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while Qwen2.5 14B Instruct was released on 2024-09-19.

Claude Opus 4.5 is 14 months newer than Qwen2.5 14B Instruct.

Claude Opus 4.5

Nov 24, 2025

6 months ago

1.2yr newer

Qwen2.5 14B Instruct

Sep 19, 2024

1.7 years ago

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a documented knowledge cutoff of 2025-03-31, while Qwen2.5 14B 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 Qwen2.5 14B Instruct's cutoff date.

Claude Opus 4.5

Mar 2025

Qwen2.5 14B Instruct

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Outputs Comparison

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Key Takeaways

Claude Opus 4.5

View details

Anthropic

Larger context window (200,000 tokens)

Supports multimodal inputs

Higher GPQA score (87.0% vs 45.5%)

Qwen2.5 14B Instruct

View details

Alibaba Cloud / Qwen Team

Has open weights

Detailed Comparison

AI Model Comparison Table
Feature	Claude Opus 4.5	Qwen2.5 14B Instruct

FAQ

Common questions about Claude Opus 4.5 vs Qwen2.5 14B Instruct.

Which is better, Claude Opus 4.5 or Qwen2.5 14B Instruct?

Claude Opus 4.5 significantly outperforms across most benchmarks. Claude Opus 4.5 is made by Anthropic and Qwen2.5 14B 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 Qwen2.5 14B 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%. Qwen2.5 14B Instruct scores GSM8k: 94.8%, HumanEval: 83.5%, MBPP: 82.0%, MATH: 80.0%, MMLU-Redux: 80.0%.

What are the context window sizes for Claude Opus 4.5 and Qwen2.5 14B Instruct?

Claude Opus 4.5 supports 200K tokens and Qwen2.5 14B 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 Qwen2.5 14B Instruct?

Key differences include multimodal support (yes vs no), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.5 and Qwen2.5 14B Instruct?

Claude Opus 4.5 is developed by Anthropic and Qwen2.5 14B Instruct is developed by Alibaba Cloud / Qwen Team.