Model Comparison

Seed 2.1 Turbo vs Gemma 4 31BWhich is better in 2026?

Seed 2.1 Turbo significantly outperforms across most benchmarks.

Verdict: Seed 2.1 Turbo vs Gemma 4 31B — which is better?

Seed 2.1 Turbo (by ByteDance) and Gemma 4 31B (by Google) 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.

Seed 2.1 Turbo outperforms in 3 benchmarks (Humanity's Last Exam, MathVision, MMMU-Pro), while Gemma 4 31B is better at 0 benchmarks. Seed 2.1 Turbo significantly outperforms across most benchmarks.

Choose Seed 2.1 Turbo if…

  • you want the strongest raw capability — it leads on 3 of 3 shared benchmarks
  • you want the most recent training data — it shipped Jun 2026

Choose Gemma 4 31B if…

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

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Seed 2.1 Turbo outperforms in 3 benchmarks (Humanity's Last Exam, MathVision, MMMU-Pro), while Gemma 4 31B is better at 0 benchmarks.

Seed 2.1 Turbo significantly outperforms across most benchmarks.

Fri Jul 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Gemma 4 31B specifies input context (262,144 tokens). Only Gemma 4 31B specifies output context (131,072 tokens).

ByteDance
Seed 2.1 Turbo
Input- tokens
Output- tokens
Google
Gemma 4 31B
Input262,144 tokens
Output131,072 tokens
Fri Jul 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Seed 2.1 Turbo and Gemma 4 31B support multimodal inputs.

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

Seed 2.1 Turbo

Text
Images
Audio
Video

Gemma 4 31B

Text
Images
Audio
Video

License

Usage and distribution terms

Seed 2.1 Turbo is licensed under a proprietary license, while Gemma 4 31B uses Apache 2.0.

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

Seed 2.1 Turbo

Proprietary

Closed source

Gemma 4 31B

Apache 2.0

Open weights

Release Timeline

When each model was launched

Seed 2.1 Turbo was released on 2026-06-24, while Gemma 4 31B was released on 2026-04-02.

Seed 2.1 Turbo is 3 months newer than Gemma 4 31B.

Seed 2.1 Turbo

Jun 24, 2026

3 weeks ago

2mo newer
Gemma 4 31B

Apr 2, 2026

3 months ago

Knowledge Cutoff

When training data ends

Gemma 4 31B has a documented knowledge cutoff of 2025-01-01, while Seed 2.1 Turbo's cutoff date is not specified.

We can confirm Gemma 4 31B's training data extends to 2025-01-01, but cannot make a direct comparison without Seed 2.1 Turbo's cutoff date.

Seed 2.1 Turbo

—

Gemma 4 31B

Jan 2025

Outputs Comparison

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Key Takeaways

ByteDance
Higher Humanity's Last Exam score (54.6% vs 26.5%)
Higher MathVision score (92.7% vs 85.6%)
Higher MMMU-Pro score (82.2% vs 76.9%)
Google
Larger context window (262,144 tokens)
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Seed 2.1 Turbo and Gemma 4 31B side-by-side, then vote on the output you prefer.

Seed 2.1 Turbo
✓ Preferred
Gemma 4 31B
Open in Playground
AI Model Comparison Table
Feature
ByteDance
Seed 2.1 Turbo
Google
Gemma 4 31B

FAQ

Common questions about Seed 2.1 Turbo vs Gemma 4 31B.

Which is better, Seed 2.1 Turbo or Gemma 4 31B?

Seed 2.1 Turbo significantly outperforms across most benchmarks. Seed 2.1 Turbo is made by ByteDance and Gemma 4 31B is made by Google. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Seed 2.1 Turbo compare to Gemma 4 31B in benchmarks?

Seed 2.1 Turbo scores CharXiv-D: 94.6%, MathVision: 92.7%, MathVista: 90.5%, MathVerse: 89.2%, Video-MME: 89.0%. Gemma 4 31B scores AIME 2026: 89.2%, MMMLU: 88.4%, t2-bench: 86.4%, MathVision: 85.6%, MMLU-Pro: 85.2%.

What are the context window sizes for Seed 2.1 Turbo and Gemma 4 31B?

Seed 2.1 Turbo supports an unknown number of tokens and Gemma 4 31B supports 262K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Seed 2.1 Turbo and Gemma 4 31B?

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

Who makes Seed 2.1 Turbo and Gemma 4 31B?

Seed 2.1 Turbo is developed by ByteDance and Gemma 4 31B is developed by Google.

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