Model Comparison

Seed 2.1 Pro vs Command A+Which is better in 2026?

Seed 2.1 Pro significantly outperforms across most benchmarks.

Verdict: Seed 2.1 Pro vs Command A+ — which is better?

Seed 2.1 Pro (by ByteDance) and Command A+ (by Cohere) 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 Pro outperforms in 5 benchmarks (CharXiv-D, CharXiv-R, MathVista, MMMU-Pro, SciCode), while Command A+ is better at 0 benchmarks. Seed 2.1 Pro significantly outperforms across most benchmarks.

Choose Seed 2.1 Pro if…

  • you want the strongest raw capability — it leads on 5 of 5 shared benchmarks
  • you want the most recent training data — it shipped Jun 2026

Choose Command A+ if…

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

Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Seed 2.1 Pro outperforms in 5 benchmarks (CharXiv-D, CharXiv-R, MathVista, MMMU-Pro, SciCode), while Command A+ is better at 0 benchmarks.

Seed 2.1 Pro significantly outperforms across most benchmarks.

Fri Jul 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Input Capabilities

Supported data types and modalities

Both Seed 2.1 Pro and Command A+ support multimodal inputs.

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

Seed 2.1 Pro

Text
Images
Audio
Video

Command A+

Text
Images
Audio
Video

License

Usage and distribution terms

Seed 2.1 Pro is licensed under a proprietary license, while Command A+ uses Apache 2.0.

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

Seed 2.1 Pro

Proprietary

Closed source

Command A+

Apache 2.0

Open weights

Release Timeline

When each model was launched

Seed 2.1 Pro was released on 2026-06-24, while Command A+ was released on 2026-05-20.

Seed 2.1 Pro is 1 month newer than Command A+.

Seed 2.1 Pro

Jun 24, 2026

3 weeks ago

1mo newer
Command A+

May 20, 2026

1 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 CharXiv-D score (95.5% vs 88.0%)
Higher CharXiv-R score (86.4% vs 52.7%)
Higher MathVista score (90.7% vs 80.6%)
Higher MMMU-Pro score (82.7% vs 63.0%)
Higher SciCode score (59.8% vs 38.0%)
Cohere
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Seed 2.1 Pro and Command A+ side-by-side, then vote on the output you prefer.

Seed 2.1 Pro
✓ Preferred
Command A+
Open in Playground
AI Model Comparison Table
Feature
ByteDance
Seed 2.1 Pro
Cohere
Command A+

FAQ

Common questions about Seed 2.1 Pro vs Command A+.

Which is better, Seed 2.1 Pro or Command A+?

Seed 2.1 Pro significantly outperforms across most benchmarks. Seed 2.1 Pro is made by ByteDance and Command A+ is made by Cohere. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Seed 2.1 Pro compare to Command A+ in benchmarks?

Seed 2.1 Pro scores CharXiv-D: 95.5%, MathVision: 94.5%, MathVista: 90.7%, MathVerse: 89.7%, Video-MME: 89.2%. Command A+ scores AIME 2025: 90.0%, CharXiv-D: 88.0%, MT-AIME 2025: 86.0%, Tau2 Telecom: 85.0%, WMT24++: 81.0%.

What are the main differences between Seed 2.1 Pro and Command A+?

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

Who makes Seed 2.1 Pro and Command A+?

Seed 2.1 Pro is developed by ByteDance and Command A+ is developed by Cohere.

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