GPT-5.4 vs Muse Glimmer
As of Oct 15, 2026, GPT-5.4 leads Muse Glimmer in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
GPT-5.4
It used to be. Was SOTA in General LLM.
Muse Glimmer
#97 Best current rank: #97 in Coding › Web dev, as of Oct 15, 2026.
| Category | GPT-5.4 | Muse Glimmer |
|---|---|---|
| General LLM | #30 · Was SOTA · General LLM Margin 15.957446808510639 LMArena leaderboard dataset · Oct 13, 2026 | #113 · #113 in General LLM Margin 60.1063829787234 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #32 · #32 in Reasoning Margin 17.55319148936171 LMArena leaderboard dataset · Oct 13, 2026 | #107 · #107 in Reasoning Margin 57.4468085106383 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #9 · #9 in Math Margin 17.777777777777757 Epoch AI benchmarking hub · Mar 5, 2026 | — |
| Science | #16 · #16 in Science Margin — Epoch AI benchmarking hub · Mar 5, 2026 | — |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #60 · #60 in Coding › Web dev Margin 47.2 LMArena leaderboard dataset · Oct 13, 2026 | #97 · #97 in Coding › Web dev Margin 76.8 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #40 · #40 in Long context Margin 21.276595744680847 LMArena leaderboard dataset · Oct 13, 2026 | #128 · #128 in Long context Margin 68.08510638297872 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | — |
| Factuality | #6 · Was SOTA · Factuality Margin 4.0697674418604635 LMArena leaderboard dataset · Oct 13, 2026 | #142 · #142 in Factuality Margin 83.13953488372093 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #10 · #10 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Mar 5, 2026 | — |
GPT-5.4: $5.625 per 1M blended tokens.
Muse Glimmer: price per 1M tokens is unset in the catalog.
GPT-5.4: closed weights.
Muse Glimmer: open weights.
General LLM: As of Oct 15, 2026, GPT-5.4 leads Muse Glimmer in General LLM at #30 against #113.
Reasoning: As of Oct 15, 2026, GPT-5.4 leads Muse Glimmer in Reasoning at #32 against #107.
Coding › Web dev: As of Oct 15, 2026, GPT-5.4 leads Muse Glimmer in Coding › Web dev at #60 against #97.
Long context: As of Oct 15, 2026, GPT-5.4 leads Muse Glimmer in Long context at #40 against #128.
Factuality: As of Oct 15, 2026, GPT-5.4 leads Muse Glimmer in Factuality at #6 against #142.
GPT-5.4 or Muse Glimmer?
As of Oct 15, 2026, GPT-5.4 leads Muse Glimmer in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
GPT-5.4 or Muse Glimmer for General LLM?
As of Oct 15, 2026, GPT-5.4 leads Muse Glimmer in General LLM at #30 against #113.
GPT-5.4 or Muse Glimmer for Reasoning?
As of Oct 15, 2026, GPT-5.4 leads Muse Glimmer in Reasoning at #32 against #107.
GPT-5.4 or Muse Glimmer for Coding › Web dev?
As of Oct 15, 2026, GPT-5.4 leads Muse Glimmer in Coding › Web dev at #60 against #97.