The AI arena is free today

Open Superagent

Muse Glimmer-30B vs Seed 2.1 Pro

Seed 2.1 Pro leads the LLM Stats Score 47.0 to 35.5.

Meta · ByteDance · Updated for 2026

Which is better?

Seed 2.1 Pro leads the overall LLM Stats Score 47.0 to 35.5, ranking #20 overall.

In the 8 individual benchmarks reported for both models, Seed 2.1 Pro wins 8; 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 Muse Glimmer-30B

  • 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 Pro

  • overall performance matters — it scores 47.0 and ranks #20 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 8 of 8 exact shared results

At a glance

The differences that matter most.

Muse Glimmer-30B
Meta
Seed 2.1 Pro
ByteDance
Core performance indexes
LLM Stats Score
35.5
#76
47.0
#20
Reasoning
34.7
#77
47.9
#18
Coding
23.8
#65
36.0
#25
Agents
18.5
#63
33.1
#22
Cost, coverage & limits
Benchmark wins
0 of 8
8 of 8
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

4 shared
Index
Muse Glimmer-30B
Seed 2.1 Pro
Math
28.3#84
39.8#15
Vision
20.4#61
34.9#10
Tool use
18.6#59
27.9#17
Multimodal
23.2#47
37.7#4
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

25 reported for Muse Glimmer-30B · 94 for Seed 2.1 Pro

8 shared

Muse Glimmer-30B outperforms in 0 benchmarks, while Seed 2.1 Pro is better at 8 benchmarks (CharXiv-R, Humanity's Last Exam, MCP Atlas, MMMU-Pro, SciCode, SWE-Bench Pro, Terminal-Bench 2.1, WildClawBench).

Seed 2.1 Pro significantly outperforms across most benchmarks.

Fri Aug 28 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Input capabilities

Documented input modalities across available providers

Both Muse Glimmer-30B and Seed 2.1 Pro support multimodal inputs.

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

Muse Glimmer-30B

Text
Images
Audio
Video

Seed 2.1 Pro

Text
Images
Audio
Video

License

Usage and distribution terms

Muse Glimmer-30B is licensed under Apache 2.0, while Seed 2.1 Pro uses a proprietary license.

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

Muse Glimmer-30B

Apache 2.0

Open weights

Seed 2.1 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Muse Glimmer-30B was released on 2026-08-10, while Seed 2.1 Pro was released on 2026-06-24.

Muse Glimmer-30B is 2 months newer than Seed 2.1 Pro.

Muse Glimmer-30B

Aug 10, 2026

2 weeks ago

1mo newer
Seed 2.1 Pro

Jun 24, 2026

2 months ago

Knowledge Cutoff

When training data ends

Muse Glimmer-30B has a documented knowledge cutoff of 2026-01-04, while Seed 2.1 Pro's cutoff date is not specified.

We can confirm Muse Glimmer-30B's training data extends to 2026-01-04, but cannot make a direct comparison without Seed 2.1 Pro's cutoff date.

Muse Glimmer-30B

Jan 2026

Seed 2.1 Pro

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Muse Glimmer-30B and Seed 2.1 Pro side-by-side, then vote on the output you prefer.

Muse Glimmer-30B
✓ Preferred
Seed 2.1 Pro
Open in Playground

FAQ

Common questions about Muse Glimmer-30B vs Seed 2.1 Pro.

Which is better, Muse Glimmer-30B or Seed 2.1 Pro?

Seed 2.1 Pro leads the LLM Stats Score 47.0 to 35.5. Muse Glimmer-30B is made by Meta and Seed 2.1 Pro is made by ByteDance. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Muse Glimmer-30B compare to Seed 2.1 Pro in benchmarks?

Muse Glimmer-30B scores AIME 2026: 94.7%, Siren AgentDojo Utility: 94.2%, GPQA: 83.5%, AA-LCR: 80.0%, CharXiv-R: 78.8%. Seed 2.1 Pro scores CharXiv-D: 95.5%, MathVision: 94.5%, MathVista: 90.7%, MathVerse: 89.7%, Video-MME: 89.2%.

What are the main differences between Muse Glimmer-30B and Seed 2.1 Pro?

Key differences include LLM Stats Score (35.5 vs 47.0), licensing (Apache 2.0 vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Muse Glimmer-30B and Seed 2.1 Pro?

Muse Glimmer-30B is developed by Meta and Seed 2.1 Pro is developed by ByteDance.

Related comparisons