# Claude Opus 5.5 vs Muse Spark 1.3

As of Oct 15, 2026, Claude Opus 5.5 leads Muse Spark 1.3 in 8 of 8 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, and Factuality.

Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.

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

Claude Opus 5.5: closed weights.

Muse Spark 1.3: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 5.5 leads Muse Spark 1.3 in General LLM at #2 against #9.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 5.5 leads Muse Spark 1.3 in Reasoning at #1 against #8.
- Which to pick, Coding: As of Oct 15, 2026, Claude Opus 5.5 leads Muse Spark 1.3 in Coding at #1 against #18.
- Which to pick, Coding › Agentic: As of Oct 15, 2026, Claude Opus 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 Opus 5.5 leads Muse Spark 1.3 in Coding › Web dev at #1 against #11.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 5.5 leads Muse Spark 1.3 in Long context at #1 against #15.
- Which to pick, Vision: As of Oct 15, 2026, Claude Opus 5.5 leads Muse Spark 1.3 in Vision at #4 against #8.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 5.5 leads Muse Spark 1.3 in Factuality at #1 against #12.

As of Oct 15, 2026, Claude Opus 5.5 is tied for state of the art in Reasoning (since Oct 2, 2026; sources LMArena Text (style-controlled, hard prompts); 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).