Claude Opus 4.5 vs Muse Spark 1.2
As of Oct 14, 2026, Claude Opus 4.5 leads Muse Spark 1.2 in 0 of 5 shared categories.
Claude Opus 4.5
It used to be. Was SOTA in Reasoning.
Muse Spark 1.2
It used to be. Was SOTA in General LLM.
| Category | Claude Opus 4.5 | Muse Spark 1.2 |
|---|---|---|
| General LLM | #33 · #33 in General LLM Margin 22.448979591836732 LMArena leaderboard dataset · Oct 13, 2026 | #8 · Was SOTA · General LLM Margin 5.442176870748298 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #28 · Was SOTA · Reasoning Margin 19.86301369863014 LMArena leaderboard dataset · Oct 13, 2026 | #11 · #11 in Reasoning Margin 8.219178082191775 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #16 · #16 in Math Margin 33.33333333333333 Epoch AI benchmarking hub · Nov 24, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #68 · #68 in Science Margin — Epoch AI benchmarking hub · Nov 24, 2025 | — |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #53 · Was SOTA · Coding › Web dev Margin 48.598130841121495 LMArena leaderboard dataset · Oct 13, 2026 | #40 · #40 in Coding › Web dev Margin 36.44859813084112 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #19 · Was SOTA · Long context Margin 12.925170068027214 LMArena leaderboard dataset · Oct 13, 2026 | #16 · Was SOTA · Long context Margin 10.884353741496597 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | — | #27 · #27 in Vision Margin 73.6842105263158 Epoch AI benchmarking hub · Aug 5, 2026 |
| Factuality | #36 · #36 in Factuality Margin 27.611940298507463 LMArena leaderboard dataset · Oct 13, 2026 | #9 · Was SOTA · Factuality Margin 7.462686567164198 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #49 · #49 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Nov 24, 2025 | — |
Claude Opus 4.5: $10 per 1M blended tokens.
Muse Spark 1.2: $2.0000000000000004 per 1M blended tokens.
Claude Opus 4.5: closed weights.
Muse Spark 1.2: closed weights.
General LLM: As of Oct 14, 2026, Muse Spark 1.2 leads Claude Opus 4.5 in General LLM at #8 against #33.
Reasoning: As of Oct 14, 2026, Muse Spark 1.2 leads Claude Opus 4.5 in Reasoning at #11 against #28.
Coding › Web dev: As of Oct 14, 2026, Muse Spark 1.2 leads Claude Opus 4.5 in Coding › Web dev at #40 against #53.
Long context: As of Oct 14, 2026, Muse Spark 1.2 leads Claude Opus 4.5 in Long context at #16 against #19.
Factuality: As of Oct 14, 2026, Muse Spark 1.2 leads Claude Opus 4.5 in Factuality at #9 against #36.
Claude Opus 4.5 · Muse Spark 1.2
Claude Opus 4.5 or Muse Spark 1.2?
As of Oct 14, 2026, Claude Opus 4.5 leads Muse Spark 1.2 in 0 of 5 shared categories.
Claude Opus 4.5 or Muse Spark 1.2 for General LLM?
As of Oct 14, 2026, Muse Spark 1.2 leads Claude Opus 4.5 in General LLM at #8 against #33.
Claude Opus 4.5 or Muse Spark 1.2 for Reasoning?
As of Oct 14, 2026, Muse Spark 1.2 leads Claude Opus 4.5 in Reasoning at #11 against #28.
Claude Opus 4.5 or Muse Spark 1.2 for Coding › Web dev?
As of Oct 14, 2026, Muse Spark 1.2 leads Claude Opus 4.5 in Coding › Web dev at #40 against #53.