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Claude Opus 4.5 vs Muse Spark

Claude Opus 4.5 leads in 5 of 8 categories

Arena ELO

Claude Opus 4.5

Cheaper

Claude Opus 4.5

Faster

Claude Opus 4.5

Detailed Comparison

CategoryClaude Opus 4.5Muse Spark
ProviderAnthropic Meta
Context Window200K WINN/A
Input Price ($/1M)$5 WINN/A
Output Price ($/1M)$25 WINN/A
Arena ELO1380 WINN/A
Coding80.9% SWE-bench N/A
Reasoningunknown N/A
Speed (tokens/sec)~35 t/s WINN/A
Open SourceNo No

Frequently Asked Questions

Which is better for coding, Claude Opus 4.5 or Muse Spark?

Claude Opus 4.5 scores 80.9% SWE-bench on coding benchmarks, while Muse Spark scores N/A.

Which has a larger context window?

Claude Opus 4.5 supports 200K context, while Muse Spark supports N/A.

Is Claude Opus 4.5 or Muse Spark open source?

Claude Opus 4.5 is proprietary. Muse Spark is proprietary.

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