ChatGPT-4o Latest vs Muse Glimmer-30B
ChatGPT-4o Latest significantly outperforms across most benchmarks.
OpenAI · Meta · Updated for 2026
Which is better?
ChatGPT-4o Latest outperforms in 1 benchmarks (GPQA), while Muse Glimmer-30B is better at 0 benchmarks. ChatGPT-4o Latest significantly outperforms across most benchmarks.
Based on current benchmark, pricing, and model metadata for 2026.
Choose ChatGPT-4o Latest
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
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.
Performance Benchmarks
Comparative analysis across standard metrics
ChatGPT-4o Latest outperforms in 1 benchmarks (GPQA), while Muse Glimmer-30B is better at 0 benchmarks.
ChatGPT-4o Latest significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Context Window
Maximum input and output token capacity
Only ChatGPT-4o Latest specifies input context (128,000 tokens). Only ChatGPT-4o Latest specifies output context (16,384 tokens).
Input Capabilities
Supported data types and modalities
Both ChatGPT-4o Latest and Muse Glimmer-30B support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
ChatGPT-4o Latest
Muse Glimmer-30B
License
Usage and distribution terms
ChatGPT-4o Latest 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.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
ChatGPT-4o Latest was released on 2024-05-13, while Muse Glimmer-30B was released on 2026-08-10.
Muse Glimmer-30B is 27 months newer than ChatGPT-4o Latest.
May 13, 2024
2.3 years ago
Aug 10, 2026
2 weeks ago
2.2yr newerKnowledge Cutoff
When training data ends
Muse Glimmer-30B has a documented knowledge cutoff of 2026-01-04, while ChatGPT-4o Latest'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 ChatGPT-4o Latest's cutoff date.
—
Jan 2026
Outputs Comparison
Judge for yourself.
Run your own prompts against ChatGPT-4o Latest and Muse Glimmer-30B side-by-side, then vote on the output you prefer.
FAQ
Common questions about ChatGPT-4o Latest vs Muse Glimmer-30B.