The AI arena is free today

Open Superagent

Muse Ember vs o1-pro

Muse Ember leads the LLM Stats Score 45.9 to 19.1.

Meta · OpenAI · Updated for 2026

Which is better?

Muse Ember leads the overall LLM Stats Score 45.9 to 19.1, ranking #47 overall.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Muse Ember

  • overall performance matters — it scores 45.9 and ranks #47 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you want the most recent training data — it shipped Nov 2026

Choose o1-pro

  • you are already invested in the OpenAI ecosystem

At a glance

The differences that matter most.

Muse Ember
Meta
o1-pro
OpenAI
Core performance indexes
LLM Stats Score
45.9
#47
19.1
#246
Reasoning
48.1
#24
19.4
#233
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.10 / M
— / M
Output price
$0.50 / M
— / M
Context window
1,048,576
—

Individual benchmarks

6 reported for Muse Ember · 2 for o1-pro

No common benchmarks found

Muse Ember and o1-prodon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Muse Ember specifies input context (1,048,576 tokens). Only Muse Ember specifies output context (524,288 tokens).

Meta
Muse Ember
Input1,048,576 tokens
Output524,288 tokens
OpenAI
o1-pro
Input- tokens
Output- tokens
Thu Nov 12 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Muse Ember and o1-pro support multimodal inputs.

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

Muse Ember

Text
Images
Audio
Video

o1-pro

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Muse Ember

Proprietary

Closed source

o1-pro

Proprietary

Closed source

Release Timeline

When each model was launched

Muse Ember was released on 2026-11-09, while o1-pro was released on 2024-12-17.

Muse Ember is 23 months newer than o1-pro.

Muse Ember

Nov 9, 2026

3 days ago

1.9yr newer
o1-pro

Dec 17, 2024

1.9 years ago

Knowledge Cutoff

When training data ends

o1-pro has a documented knowledge cutoff of 2023-09-30, while Muse Ember's cutoff date is not specified.

We can confirm o1-pro's training data extends to 2023-09-30, but cannot make a direct comparison without Muse Ember's cutoff date.

Muse Ember

—

o1-pro

Sep 2023

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Muse Ember and o1-pro side-by-side, then vote on the output you prefer.

Muse Ember
✓ Preferred
o1-pro
Open in Playground

FAQ

Common questions about Muse Ember vs o1-pro.

Which is better, Muse Ember or o1-pro?

Muse Ember leads the LLM Stats Score 45.9 to 19.1. Muse Ember is made by Meta and o1-pro is made by OpenAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Muse Ember compare to o1-pro in benchmarks?

Muse Ember scores PerceptionBench: 80.6%, OSWorld 2.1 (partial): 69.5%, Agents' Last Exam: 61.6%, Personal Superintelligence Index: 46.8%, Terminal-Bench 4.0: 40.9%. o1-pro scores AIME 2024: 86.0%, GPQA: 79.0%.

What are the context window sizes for Muse Ember and o1-pro?

Muse Ember supports 1.0M tokens and o1-pro 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 Muse Ember and o1-pro?

Key differences include LLM Stats Score (45.9 vs 19.1). See the full comparison above for benchmark-by-benchmark results.

Who makes Muse Ember and o1-pro?

Muse Ember is developed by Meta and o1-pro is developed by OpenAI.

Related comparisons