Muse Spark Open vs o1-pro
Muse Spark Open leads the LLM Stats Score 44.9 to 19.5.
Meta · OpenAI · Updated for 2026
Which is better?
Muse Spark Open leads the overall LLM Stats Score 44.9 to 19.5, ranking #43 overall.
In the 1 individual benchmarks reported for both models, Muse Spark Open 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 Muse Spark Open
- overall performance matters — it scores 44.9 and ranks #43 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- you want the most recent training data — it shipped Oct 2026
- you need open weights you can self-host or fine-tune
Choose o1-pro
- you are already invested in the OpenAI ecosystem
At a glance
The differences that matter most.
Individual benchmarks
17 reported for Muse Spark Open · 2 for o1-pro
Muse Spark Open outperforms in 1 benchmarks (GPQA), while o1-pro is better at 0 benchmarks.
Muse Spark Open significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only Muse Spark Open specifies input context (1,048,576 tokens). Only Muse Spark Open specifies output context (1,048,576 tokens).
Input capabilities
Documented input modalities across available providers
Both Muse Spark Open and o1-pro support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Muse Spark Open
o1-pro
License
Usage and distribution terms
Muse Spark Open is licensed under Muse Model License, while o1-pro uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
Muse Model License
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
Muse Spark Open was released on 2026-10-15, while o1-pro was released on 2024-12-17.
Muse Spark Open is 22 months newer than o1-pro.
Oct 15, 2026
2 days ago
1.8yr newerDec 17, 2024
1.8 years ago
Knowledge Cutoff
When training data ends
o1-pro has a documented knowledge cutoff of 2023-09-30, while Muse Spark Open'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 Spark Open's cutoff date.
—
Sep 2023
Outputs Comparison
Judge for yourself.
Run your own prompts against Muse Spark Open and o1-pro side-by-side, then vote on the output you prefer.
FAQ
Common questions about Muse Spark Open vs o1-pro.