Claude Opus 5.5 vs Muse Glimmer
As of Oct 14, 2026, Claude Opus 5.5 leads Muse Glimmer in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 5.5
Yes. SOTA in co-SOTA in Reasoning, co-SOTA in Coding, co-SOTA in Coding › Agentic, Coding › Web dev, co-SOTA in Long context and co-SOTA in Factuality.
Muse Glimmer
#82 Best current rank: #82 in Reasoning, as of Oct 14, 2026.
| Category | Claude Opus 5.5 | Muse Glimmer |
|---|---|---|
| General LLM | #2 · Near-SOTA · General LLM Margin 1.3605442176870781 LMArena leaderboard dataset · Oct 13, 2026 | #86 · #86 in General LLM Margin 58.50340136054422 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #1 · Co-SOTA · Reasoning Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #82 · #82 in Reasoning Margin 56.84931506849315 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | — |
| Science | #31 · #31 in Science Margin — Epoch AI benchmarking hub · Sep 22, 2026 | — |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #1 · SOTA · Coding › Web dev Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #86 · #86 in Coding › Web dev Margin 79.43925233644859 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #1 · Co-SOTA · Long context Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #97 · #97 in Long context Margin 65.98639455782313 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #4 · Near-SOTA · Vision Margin 13.15789473684211 Epoch AI benchmarking hub · Sep 22, 2026 | — |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #107 · #107 in Factuality Margin 80.59701492537313 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 | — |
Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.
Muse Glimmer: price per 1M tokens is unset in the catalog.
Claude Opus 5.5: closed weights.
Muse Glimmer: open weights.
General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads Muse Glimmer in General LLM at #2 against #86.
Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads Muse Glimmer in Reasoning at #1 against #82.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 5.5 leads Muse Glimmer in Coding › Web dev at #1 against #86.
Long context: As of Oct 14, 2026, Claude Opus 5.5 leads Muse Glimmer in Long context at #1 against #97.
Factuality: As of Oct 14, 2026, Claude Opus 5.5 leads Muse Glimmer in Factuality at #1 against #107.
Claude Opus 5.5 · Muse Glimmer
Claude Opus 5.5 or Muse Glimmer?
As of Oct 14, 2026, Claude Opus 5.5 leads Muse Glimmer in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 5.5 or Muse Glimmer for General LLM?
As of Oct 14, 2026, Claude Opus 5.5 leads Muse Glimmer in General LLM at #2 against #86.
Claude Opus 5.5 or Muse Glimmer for Reasoning?
As of Oct 14, 2026, Claude Opus 5.5 leads Muse Glimmer in Reasoning at #1 against #82.
Claude Opus 5.5 or Muse Glimmer for Coding › Web dev?
As of Oct 14, 2026, Claude Opus 5.5 leads Muse Glimmer in Coding › Web dev at #1 against #86.