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Claude Opus 5 vs Muse Glimmer-30B

Claude Opus 5 leads the LLM Stats Score 56.2 to 35.5.

Anthropic · Meta · Updated for 2026

Which is better?

Claude Opus 5 leads the overall LLM Stats Score 56.2 to 35.5, ranking #2 overall.

In the 1 individual benchmarks reported for both models, Claude Opus 5 wins 1; 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 Claude Opus 5

  • overall performance matters — it scores 56.2 and ranks #2 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results

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

At a glance

The differences that matter most.

Claude Opus 5
Anthropic
Muse Glimmer-30B
Meta
Core performance indexes
LLM Stats Score
56.2
#2
35.5
#76
Reasoning
55.0
#3
34.7
#77
Coding
42.8
#9
23.8
#65
Agents
41.3
#3
18.5
#63
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
$5.00 / M
— / M
Output price
$25.00 / M
— / M
Context window
1,000,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Claude Opus 5
Muse Glimmer-30B
Vision
38.9#2
20.4#61
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

12 reported for Claude Opus 5 · 25 for Muse Glimmer-30B

1 shared

Claude Opus 5 outperforms in 1 benchmarks (Humanity's Last Exam), while Muse Glimmer-30B is better at 0 benchmarks.

Claude Opus 5 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 Claude Opus 5 specifies input context (1,000,000 tokens). Only Claude Opus 5 specifies output context (128,000 tokens).

Anthropic
Claude Opus 5
Input1,000,000 tokens
Output128,000 tokens
Meta
Muse Glimmer-30B
Input- tokens
Output- tokens
Fri Aug 28 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Opus 5 and Muse Glimmer-30B support multimodal inputs.

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

Claude Opus 5

Text
Images
Audio
Video

Muse Glimmer-30B

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 5 is licensed under a proprietary license, while Muse Glimmer-30B uses Apache 2.0.

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

Claude Opus 5

Proprietary

Closed source

Muse Glimmer-30B

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Opus 5 was released on 2026-07-24, while Muse Glimmer-30B was released on 2026-08-10.

Muse Glimmer-30B is 1 month newer than Claude Opus 5.

Claude Opus 5

Jul 24, 2026

1 months ago

Muse Glimmer-30B

Aug 10, 2026

2 weeks ago

2w newer

Knowledge Cutoff

When training data ends

Muse Glimmer-30B has a documented knowledge cutoff of 2026-01-04, while Claude Opus 5'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 Claude Opus 5's cutoff date.

Claude Opus 5

—

Muse Glimmer-30B

Jan 2026

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude Opus 5 and Muse Glimmer-30B side-by-side, then vote on the output you prefer.

Claude Opus 5
✓ Preferred
Muse Glimmer-30B
Open in Playground

FAQ

Common questions about Claude Opus 5 vs Muse Glimmer-30B.

Which is better, Claude Opus 5 or Muse Glimmer-30B?

Claude Opus 5 leads the LLM Stats Score 56.2 to 35.5. Claude Opus 5 is made by Anthropic and Muse Glimmer-30B is made by Meta. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Opus 5 compare to Muse Glimmer-30B in benchmarks?

Claude Opus 5 scores BrowseComp: 90.8%, BioMysteryBench: 90.1%, OSWorld 2.0: 70.6%, DeepSWE 1.1: 68.8%, Humanity's Last Exam: 64.7%. Muse Glimmer-30B scores AIME 2026: 94.7%, Siren AgentDojo Utility: 94.2%, GPQA: 83.5%, AA-LCR: 80.0%, CharXiv-R: 78.8%.

What are the context window sizes for Claude Opus 5 and Muse Glimmer-30B?

Claude Opus 5 supports 1.0M tokens and Muse Glimmer-30B 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 Claude Opus 5 and Muse Glimmer-30B?

Key differences include LLM Stats Score (56.2 vs 35.5), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 5 and Muse Glimmer-30B?

Claude Opus 5 is developed by Anthropic and Muse Glimmer-30B is developed by Meta.

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