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Qwen3.8 Max vs Seed 2.1 Turbo

Qwen3.8 Max leads the LLM Stats Score 53.0 to 44.0.

Alibaba Cloud / Qwen Team · ByteDance · Updated for 2026

Which is better?

Qwen3.8 Max leads the overall LLM Stats Score 53.0 to 44.0, ranking #8 overall.

In the 12 individual benchmarks reported for both models, Qwen3.8 Max wins 10; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Qwen3.8 Max

  • overall performance matters — it scores 53.0 and ranks #8 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 10 of 12 exact shared results
  • you want the most recent training data — it shipped Aug 2026
  • you need open weights you can self-host or fine-tune

Choose Seed 2.1 Turbo

  • you are already invested in the ByteDance ecosystem

At a glance

The differences that matter most.

Qwen3.8 Max
Alibaba Cloud / Qwen Team
Seed 2.1 Turbo
ByteDance
Core performance indexes
LLM Stats Score
53.0
#8
44.0
#31
Reasoning
51.8
#7
45.4
#27
Coding
42.0
#10
33.2
#36
Agents
39.7
#8
30.4
#28
Cost, coverage & limits
Benchmark wins
10 of 12
2 of 12
Input price
$1.65 / M
— / M
Output price
$4.95 / M
— / M
Context window
256,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

5 shared
Index
Qwen3.8 Max
Seed 2.1 Turbo
Math
33.0#52
39.4#19
Vision
38.7#3
30.6#25
Tool use
34.1#5
23.0#41
Long context
32.0#3
28.5#5
Multimodal
39.6#1
32.8#16
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

42 reported for Qwen3.8 Max · 90 for Seed 2.1 Turbo

12 shared

Qwen3.8 Max outperforms in 10 benchmarks (ERQA, LVBench, MMMU-Pro, MobileWorld, NL2Repo, RealWorldQA, SWE-Bench Pro, Terminal-Bench 2.1, Toolathlon, Workspace Bench), while Seed 2.1 Turbo is better at 2 benchmarks (Humanity's Last Exam, OneMillion Bench).

Qwen3.8 Max significantly outperforms across most benchmarks.

Fri Aug 28 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Qwen3.8 Max specifies input context (256,000 tokens). Only Qwen3.8 Max specifies output context (131,072 tokens).

Alibaba Cloud / Qwen Team
Qwen3.8 Max
Input256,000 tokens
Output131,072 tokens
ByteDance
Seed 2.1 Turbo
Input- tokens
Output- tokens
Fri Aug 28 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Qwen3.8 Max and Seed 2.1 Turbo support multimodal inputs.

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

Qwen3.8 Max

Text
Images
Audio
Video

Seed 2.1 Turbo

Text
Images
Audio
Video

License

Usage and distribution terms

Qwen3.8 Max is licensed under Qwen3.8-Max License, while Seed 2.1 Turbo uses a proprietary license.

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

Qwen3.8 Max

Qwen3.8-Max License

Open weights

Seed 2.1 Turbo

Proprietary

Closed source

Release Timeline

When each model was launched

Qwen3.8 Max was released on 2026-08-02, while Seed 2.1 Turbo was released on 2026-06-24.

Qwen3.8 Max is 1 month newer than Seed 2.1 Turbo.

Qwen3.8 Max

Aug 2, 2026

3 weeks ago

1mo newer
Seed 2.1 Turbo

Jun 24, 2026

2 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→

Judge for yourself.

Run your own prompts against Qwen3.8 Max and Seed 2.1 Turbo side-by-side, then vote on the output you prefer.

Qwen3.8 Max
✓ Preferred
Seed 2.1 Turbo
Open in Playground

FAQ

Common questions about Qwen3.8 Max vs Seed 2.1 Turbo.

Which is better, Qwen3.8 Max or Seed 2.1 Turbo?

Qwen3.8 Max leads the LLM Stats Score 53.0 to 44.0. Qwen3.8 Max is made by Alibaba Cloud / Qwen Team and Seed 2.1 Turbo is made by ByteDance. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Qwen3.8 Max compare to Seed 2.1 Turbo in benchmarks?

Qwen3.8 Max scores PaperBench: 93.0%, MRCR v2 (8-needle): 92.9%, GPQA: 92.6%, VideoMME w sub.: 90.4%, RealWorldQA: 88.0%. Seed 2.1 Turbo scores CharXiv-D: 94.6%, MathVision: 92.7%, MathVista: 90.5%, MathVerse: 89.2%, Video-MME: 89.0%.

What are the context window sizes for Qwen3.8 Max and Seed 2.1 Turbo?

Qwen3.8 Max supports 256K tokens and Seed 2.1 Turbo 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 Qwen3.8 Max and Seed 2.1 Turbo?

Key differences include LLM Stats Score (53.0 vs 44.0), licensing (Qwen3.8-Max License vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Qwen3.8 Max and Seed 2.1 Turbo?

Qwen3.8 Max is developed by Alibaba Cloud / Qwen Team and Seed 2.1 Turbo is developed by ByteDance.

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