Model Comparison

Claude Opus 5 vs Qwen3.5-9BWhich is better in 2026?

Comparing Claude Opus 5 and Qwen3.5-9B across benchmarks, pricing, and capabilities.

Verdict: Claude Opus 5 vs Qwen3.5-9B — which is better?

Claude Opus 5 (by Anthropic) and Qwen3.5-9B (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.

Choose Claude Opus 5 if…

  • you want the most recent training data — it shipped Jul 2026

Choose Qwen3.5-9B if…

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

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude Opus 5 and Qwen3.5-9Bdon'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 5 specifies input context (1,000,000 tokens). Only Claude Opus 5 specifies output context (128,000 tokens).

Anthropic
Claude Opus 5
Input1,000,000 tokens
Output128,000 tokens
Alibaba Cloud / Qwen Team
Qwen3.5-9B
Input- tokens
Output- tokens
Sun Jul 26 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 5 and Qwen3.5-9B support multimodal inputs.

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

Claude Opus 5

Text
Images
Audio
Video

Qwen3.5-9B

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 5 is licensed under a proprietary license, while Qwen3.5-9B uses Apache 2.0.

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

Claude Opus 5

Proprietary

Closed source

Qwen3.5-9B

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Opus 5 was released on 2026-07-24, while Qwen3.5-9B was released on 2026-03-02.

Claude Opus 5 is 5 months newer than Qwen3.5-9B.

Claude Opus 5

Jul 24, 2026

1 days ago

4mo newer
Qwen3.5-9B

Mar 2, 2026

4 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (1,000,000 tokens)
Alibaba Cloud / Qwen Team

Qwen3.5-9B

View details

Alibaba Cloud / Qwen Team

Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude Opus 5 and Qwen3.5-9B side-by-side, then vote on the output you prefer.

Claude Opus 5
✓ Preferred
Qwen3.5-9B
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude Opus 5
Alibaba Cloud / Qwen Team
Qwen3.5-9B

FAQ

Common questions about Claude Opus 5 vs Qwen3.5-9B.

Which is better, Claude Opus 5 or Qwen3.5-9B?

Claude Opus 5 (Anthropic) and Qwen3.5-9B (Alibaba Cloud / Qwen Team) 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 5 compare to Qwen3.5-9B in benchmarks?

Claude Opus 5 scores BrowseComp: 90.8%, BioMysteryBench: 90.1%, OSWorld 2.0: 70.6%, DeepSWE 1.1: 68.8%, Humanity's Last Exam: 64.7%. Qwen3.5-9B scores IFEval: 91.5%, MMLU-Redux: 91.1%, C-Eval: 88.2%, MAXIFE: 83.4%, Global PIQA: 83.2%.

What are the context window sizes for Claude Opus 5 and Qwen3.5-9B?

Claude Opus 5 supports 1.0M tokens and Qwen3.5-9B 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 5 and Qwen3.5-9B?

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

Who makes Claude Opus 5 and Qwen3.5-9B?

Claude Opus 5 is developed by Anthropic and Qwen3.5-9B is developed by Alibaba Cloud / Qwen Team.

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