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Qwen3.8-27B vs Seed 2.0 Pro

Qwen3.8-27B significantly outperforms across most benchmarks.

Alibaba Cloud / Qwen Team · ByteDance · Updated for 2026

Which is better?

Qwen3.8-27B outperforms in 2 benchmarks (GPQA, LiveCodeBench v6), while Seed 2.0 Pro is better at 0 benchmarks. Qwen3.8-27B significantly outperforms across most benchmarks.

Based on current benchmark, pricing, and model metadata for 2026.

Choose Qwen3.8-27B

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
  • you want the most recent training data — it shipped Aug 2026
  • you need open weights you can self-host or fine-tune

Choose Seed 2.0 Pro

  • you want predictable pricing at $0.50/M input and $3.00/M output

At a glance

The differences that matter most.

Qwen3.8-27B
Alibaba Cloud / Qwen Team
Seed 2.0 Pro
ByteDance
Benchmark wins
2 of 2
0 of 2
Input price
— / M
$0.50 / M
Output price
— / M
$3.00 / M
Context window
—
256,000
Released
Aug 2026
Feb 2026
License
Apache 2.0
Proprietary

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Qwen3.8-27B outperforms in 2 benchmarks (GPQA, LiveCodeBench v6), while Seed 2.0 Pro is better at 0 benchmarks.

Qwen3.8-27B significantly outperforms across most benchmarks.

Tue Aug 25 2026 • llm-stats.com

Arena Performance

Playground indexes and blind preference scores

Context Window

Maximum input and output token capacity

Only Seed 2.0 Pro specifies input context (256,000 tokens). Only Seed 2.0 Pro specifies output context (65,536 tokens).

Alibaba Cloud / Qwen Team
Qwen3.8-27B
Input- tokens
Output- tokens
ByteDance
Seed 2.0 Pro
Input256,000 tokens
Output65,536 tokens
Tue Aug 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Qwen3.8-27B and Seed 2.0 Pro support multimodal inputs.

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

Qwen3.8-27B

Text
Images
Audio
Video

Seed 2.0 Pro

Text
Images
Audio
Video

License

Usage and distribution terms

Qwen3.8-27B is licensed under Apache 2.0, while Seed 2.0 Pro uses a proprietary license.

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

Qwen3.8-27B

Apache 2.0

Open weights

Seed 2.0 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Qwen3.8-27B was released on 2026-08-14, while Seed 2.0 Pro was released on 2026-02-14.

Qwen3.8-27B is 6 months newer than Seed 2.0 Pro.

Qwen3.8-27B

Aug 14, 2026

1 weeks ago

6mo newer
Seed 2.0 Pro

Feb 14, 2026

6 months ago

Knowledge Cutoff

When training data ends

Seed 2.0 Pro has a documented knowledge cutoff of 2024-01-01, while Qwen3.8-27B's cutoff date is not specified.

We can confirm Seed 2.0 Pro's training data extends to 2024-01-01, but cannot make a direct comparison without Qwen3.8-27B's cutoff date.

Qwen3.8-27B

—

Seed 2.0 Pro

Jan 2024

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Qwen3.8-27B and Seed 2.0 Pro side-by-side, then vote on the output you prefer.

Qwen3.8-27B
✓ Preferred
Seed 2.0 Pro
Open in Playground

FAQ

Common questions about Qwen3.8-27B vs Seed 2.0 Pro.

Which is better, Qwen3.8-27B or Seed 2.0 Pro?

Qwen3.8-27B significantly outperforms across most benchmarks. Qwen3.8-27B is made by Alibaba Cloud / Qwen Team and Seed 2.0 Pro is made by ByteDance. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Qwen3.8-27B compare to Seed 2.0 Pro in benchmarks?

Qwen3.8-27B scores MathVision: 94.6%, OmniDocBench 1.5: 91.1%, LiveCodeBench v6: 90.3%, CharXiv-R: 90.2%, GPQA: 89.2%. Seed 2.0 Pro scores AIME 2025: 98.3%, AIME 2026: 94.2%, GPQA: 88.9%, LiveCodeBench v6: 87.8%, BrowseComp: 77.3%.

What are the context window sizes for Qwen3.8-27B and Seed 2.0 Pro?

Qwen3.8-27B supports an unknown number of tokens and Seed 2.0 Pro supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Qwen3.8-27B and Seed 2.0 Pro?

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

Who makes Qwen3.8-27B and Seed 2.0 Pro?

Qwen3.8-27B is developed by Alibaba Cloud / Qwen Team and Seed 2.0 Pro is developed by ByteDance.

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