# Claude Sonnet 5.5 vs Muse Spark 1.3

As of Oct 15, 2026, Claude Sonnet 5.5 leads Muse Spark 1.3 in 5 of 8 shared categories: Coding, Coding › Agentic, Coding › Web dev, Long context, and Vision.

Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.

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

Claude Sonnet 5.5: 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 5.5 in General LLM at #9 against #29.
- Which to pick, Reasoning: As of Oct 15, 2026, Muse Spark 1.3 leads Claude Sonnet 5.5 in Reasoning at #8 against #18.
- Which to pick, Coding: As of Oct 15, 2026, Claude Sonnet 5.5 leads Muse Spark 1.3 in Coding at #1 against #18.
- Which to pick, Coding › Agentic: As of Oct 15, 2026, Claude Sonnet 5.5 leads Muse Spark 1.3 in Coding › Agentic at #1 against #18.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Sonnet 5.5 leads Muse Spark 1.3 in Coding › Web dev at #3 against #11.
- Which to pick, Long context: As of Oct 15, 2026, Claude Sonnet 5.5 leads Muse Spark 1.3 in Long context at #11 against #15.
- Which to pick, Vision: As of Oct 15, 2026, Claude Sonnet 5.5 leads Muse Spark 1.3 in Vision at #1 against #8.
- Which to pick, Factuality: As of Oct 15, 2026, Muse Spark 1.3 leads Claude Sonnet 5.5 in Factuality at #12 against #17.

As of Oct 15, 2026, Claude Sonnet 5.5 is tied for state of the art in Coding (since Oct 6, 2026; sources Terminal-Bench 4.0; 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).