Model Comparison

Claude Mythos Preview vs Qwen3.8 MaxWhich is better in 2026?

Claude Mythos Preview shows notably better performance in the majority of benchmarks.

Verdict: Claude Mythos Preview vs Qwen3.8 Max — which is better?

Claude Mythos Preview (by Anthropic) and Qwen3.8 Max (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 Mythos Preview outperforms in 3 benchmarks (GPQA, Humanity's Last Exam, SWE-Bench Pro), while Qwen3.8 Max is better at 1 benchmark (OSWorld-Verified). Claude Mythos Preview shows notably better performance in the majority of benchmarks.

Choose Claude Mythos Preview if…

  • you want the strongest raw capability — it leads on 3 of 4 shared benchmarks

Choose Qwen3.8 Max if…

  • you are already invested in the Alibaba Cloud / Qwen Team ecosystem

Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Claude Mythos Preview outperforms in 3 benchmarks (GPQA, Humanity's Last Exam, SWE-Bench Pro), while Qwen3.8 Max is better at 1 benchmark (OSWorld-Verified).

Claude Mythos Preview shows notably better performance in the majority of benchmarks.

Tue Aug 04 2026 • llm-stats.com

Arena Performance

Human preference votes

Input Capabilities

Supported data types and modalities

Both Claude Mythos Preview and Qwen3.8 Max support multimodal inputs.

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

Claude Mythos Preview

Text
Images
Audio
Video

Qwen3.8 Max

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude Mythos Preview

Proprietary

Closed source

Qwen3.8 Max

Proprietary

Closed source

Release Timeline

When each model was launched

Qwen3.8 Max was released on 2026-08-02, while Claude Mythos Preview's release date is not specified.

We can confirm Qwen3.8 Max's release timeline, but cannot make a direct age comparison without Claude Mythos Preview's release date.

Claude Mythos Preview

—

Qwen3.8 Max

Aug 2, 2026

1 days 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
Higher GPQA score (94.6% vs 92.6%)
Higher Humanity's Last Exam score (64.7% vs 43.6%)
Higher SWE-Bench Pro score (77.8% vs 67.7%)
Alibaba Cloud / Qwen Team

Qwen3.8 Max

View details

Alibaba Cloud / Qwen Team

Higher OSWorld-Verified score (86.1% vs 79.6%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude Mythos Preview and Qwen3.8 Max side-by-side, then vote on the output you prefer.

Claude Mythos Preview
✓ Preferred
Qwen3.8 Max
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude Mythos Preview
Alibaba Cloud / Qwen Team
Qwen3.8 Max

FAQ

Common questions about Claude Mythos Preview vs Qwen3.8 Max.

Which is better, Claude Mythos Preview or Qwen3.8 Max?

Claude Mythos Preview shows notably better performance in the majority of benchmarks. Claude Mythos Preview is made by Anthropic and Qwen3.8 Max 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 Mythos Preview compare to Qwen3.8 Max in benchmarks?

Claude Mythos Preview scores CyBench: 100.0%, USAMO25: 97.6%, GPQA: 94.6%, SWE-Bench Verified: 93.9%, CharXiv-R: 93.2%. Qwen3.8 Max scores PaperBench: 93.0%, GPQA: 92.6%, VideoMME w sub.: 90.4%, RealWorldQA: 88.0%, Terminal-Bench 2.1: 86.6%.

Who makes Claude Mythos Preview and Qwen3.8 Max?

Claude Mythos Preview is developed by Anthropic and Qwen3.8 Max is developed by Alibaba Cloud / Qwen Team.

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