Claude Sonnet 4.5 vs Muse Spark 1.2
As of Oct 14, 2026, Claude Sonnet 4.5 leads Muse Spark 1.2 in 0 of 5 shared categories.
Claude Sonnet 4.5
It used to be. Was SOTA in General LLM.
Muse Spark 1.2
It used to be. Was SOTA in General LLM.
| Category | Claude Sonnet 4.5 | Muse Spark 1.2 |
|---|---|---|
| General LLM | #49 · Was SOTA · General LLM Margin 33.33333333333333 LMArena leaderboard dataset · Oct 13, 2026 | #8 · Was SOTA · General LLM Margin 5.442176870748298 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #40 · Was SOTA · Reasoning Margin 28.082191780821915 LMArena leaderboard dataset · Oct 13, 2026 | #11 · #11 in Reasoning Margin 8.219178082191775 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #25 · #25 in Math Margin 53.333333333333336 Epoch AI benchmarking hub · Sep 29, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #82 · #82 in Science Margin — Epoch AI benchmarking hub · Sep 29, 2025 | — |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Sep 29, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #78 · Was SOTA · Coding › Web dev Margin 71.96261682242991 LMArena leaderboard dataset · Oct 13, 2026 | #40 · #40 in Coding › Web dev Margin 36.44859813084112 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #29 · Was SOTA · Long context Margin 19.72789115646259 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 | #50 · #50 in Factuality Margin 38.059701492537314 LMArena leaderboard dataset · Oct 13, 2026 | #9 · Was SOTA · Factuality Margin 7.462686567164198 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #66 · #66 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 29, 2025 | — |
Claude Sonnet 4.5: $6 per 1M blended tokens.
Muse Spark 1.2: $2.0000000000000004 per 1M blended tokens.
Claude Sonnet 4.5: closed weights.
Muse Spark 1.2: closed weights.
General LLM: As of Oct 14, 2026, Muse Spark 1.2 leads Claude Sonnet 4.5 in General LLM at #8 against #49.
Reasoning: As of Oct 14, 2026, Muse Spark 1.2 leads Claude Sonnet 4.5 in Reasoning at #11 against #40.
Coding › Web dev: As of Oct 14, 2026, Muse Spark 1.2 leads Claude Sonnet 4.5 in Coding › Web dev at #40 against #78.
Long context: As of Oct 14, 2026, Muse Spark 1.2 leads Claude Sonnet 4.5 in Long context at #16 against #29.
Factuality: As of Oct 14, 2026, Muse Spark 1.2 leads Claude Sonnet 4.5 in Factuality at #9 against #50.
Claude Sonnet 4.5 · Muse Spark 1.2
Claude Sonnet 4.5 or Muse Spark 1.2?
As of Oct 14, 2026, Claude Sonnet 4.5 leads Muse Spark 1.2 in 0 of 5 shared categories.
Claude Sonnet 4.5 or Muse Spark 1.2 for General LLM?
As of Oct 14, 2026, Muse Spark 1.2 leads Claude Sonnet 4.5 in General LLM at #8 against #49.
Claude Sonnet 4.5 or Muse Spark 1.2 for Reasoning?
As of Oct 14, 2026, Muse Spark 1.2 leads Claude Sonnet 4.5 in Reasoning at #11 against #40.
Claude Sonnet 4.5 or Muse Spark 1.2 for Coding › Web dev?
As of Oct 14, 2026, Muse Spark 1.2 leads Claude Sonnet 4.5 in Coding › Web dev at #40 against #78.