Model Comparison

Seed 2.1 Turbo vs Mistral Medium 3.5Which is better in 2026?

Seed 2.1 Turbo significantly outperforms across most benchmarks.

Verdict: Seed 2.1 Turbo vs Mistral Medium 3.5 — which is better?

Seed 2.1 Turbo (by ByteDance) and Mistral Medium 3.5 (by Mistral AI) 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 2 benchmarks (Beyond AIME, BrowseComp), while Mistral Medium 3.5 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 2 of 2 shared benchmarks
  • you want the most recent training data — it shipped Jun 2026

Choose Mistral Medium 3.5 if…

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

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Seed 2.1 Turbo outperforms in 2 benchmarks (Beyond AIME, BrowseComp), while Mistral Medium 3.5 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 Mistral Medium 3.5 specifies input context (256,000 tokens). Only Mistral Medium 3.5 specifies output context (256,000 tokens).

ByteDance
Seed 2.1 Turbo
Input- tokens
Output- tokens
Mistral AI
Mistral Medium 3.5
Input256,000 tokens
Output256,000 tokens
Fri Jul 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Seed 2.1 Turbo and Mistral Medium 3.5 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

Mistral Medium 3.5

Text
Images
Audio
Video

License

Usage and distribution terms

Seed 2.1 Turbo is licensed under a proprietary license, while Mistral Medium 3.5 uses Modified MIT License.

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

Seed 2.1 Turbo

Proprietary

Closed source

Mistral Medium 3.5

Modified MIT License

Open weights

Release Timeline

When each model was launched

Seed 2.1 Turbo was released on 2026-06-24, while Mistral Medium 3.5 was released on 2026-04-29.

Seed 2.1 Turbo is 2 months newer than Mistral Medium 3.5.

Seed 2.1 Turbo

Jun 24, 2026

3 weeks ago

1mo newer
Mistral Medium 3.5

Apr 29, 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→

Key Takeaways

ByteDance
Higher Beyond AIME score (88.0% vs 66.9%)
Higher BrowseComp score (84.9% vs 48.6%)
Mistral AI
Larger context window (256,000 tokens)
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Seed 2.1 Turbo and Mistral Medium 3.5 side-by-side, then vote on the output you prefer.

Seed 2.1 Turbo
✓ Preferred
Mistral Medium 3.5
Open in Playground
AI Model Comparison Table
Feature
ByteDance
Seed 2.1 Turbo
Mistral AI
Mistral Medium 3.5

FAQ

Common questions about Seed 2.1 Turbo vs Mistral Medium 3.5.

Which is better, Seed 2.1 Turbo or Mistral Medium 3.5?

Seed 2.1 Turbo significantly outperforms across most benchmarks. Seed 2.1 Turbo is made by ByteDance and Mistral Medium 3.5 is made by Mistral AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Seed 2.1 Turbo compare to Mistral Medium 3.5 in benchmarks?

Seed 2.1 Turbo scores CharXiv-D: 94.6%, MathVision: 92.7%, MathVista: 90.5%, MathVerse: 89.2%, Video-MME: 89.0%. Mistral Medium 3.5 scores COLLIE: 95.8%, Tau3 Telecom: 91.4%, AIME 2025: 86.3%, SWE-Bench Verified: 77.6%, Tau3 Retail: 76.1%.

What are the context window sizes for Seed 2.1 Turbo and Mistral Medium 3.5?

Seed 2.1 Turbo supports an unknown number of tokens and Mistral Medium 3.5 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 Seed 2.1 Turbo and Mistral Medium 3.5?

Key differences include licensing (Proprietary vs Modified MIT License). See the full comparison above for benchmark-by-benchmark results.

Who makes Seed 2.1 Turbo and Mistral Medium 3.5?

Seed 2.1 Turbo is developed by ByteDance and Mistral Medium 3.5 is developed by Mistral AI.

Related comparisons