# Claude Sonnet 4.5 vs Muse Spark 1.3

As of Oct 15, 2026, Claude Sonnet 4.5 leads Muse Spark 1.3 in 0 of 5 shared categories.

Claude Sonnet 4.5: $6 per 1M blended tokens.

Muse Spark 1.3: $2.0000000000000004 per 1M blended tokens.

Claude Sonnet 4.5: closed weights.

Muse Spark 1.3: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Muse Spark 1.3 leads Claude Sonnet 4.5 in General LLM at #9 against #62.
- Which to pick, Reasoning: As of Oct 15, 2026, Muse Spark 1.3 leads Claude Sonnet 4.5 in Reasoning at #8 against #51.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Muse Spark 1.3 leads Claude Sonnet 4.5 in Coding › Web dev at #11 against #86.
- Which to pick, Long context: As of Oct 15, 2026, Muse Spark 1.3 leads Claude Sonnet 4.5 in Long context at #15 against #34.
- Which to pick, Factuality: As of Oct 15, 2026, Muse Spark 1.3 leads Claude Sonnet 4.5 in Factuality at #12 against #61.

As of Oct 15, 2026, Claude Sonnet 4.5 is a former state-of-the-art holder in General LLM (since Oct 3, 2025; sources LMArena Text (style-controlled, overall); methodology v1.0).

As of Oct 15, 2026, Muse Spark 1.3 is state of the art on best per dollar in Coding › Web dev (since Oct 14, 2026; sources LMArena WebDev; methodology v1.0).