# Claude Sonnet 4 vs Muse Spark 1.2

As of Oct 15, 2026, Claude Sonnet 4 leads Muse Spark 1.2 in 0 of 3 shared categories.

Claude Sonnet 4: $6 per 1M blended tokens.

Muse Spark 1.2: $2.0000000000000004 per 1M blended tokens.

Claude Sonnet 4: closed weights.

Muse Spark 1.2: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Muse Spark 1.2 leads Claude Sonnet 4 in General LLM at #8 against #126.
- Which to pick, Reasoning: As of Oct 15, 2026, Muse Spark 1.2 leads Claude Sonnet 4 in Reasoning at #11 against #115.
- Which to pick, Long context: As of Oct 15, 2026, Muse Spark 1.2 leads Claude Sonnet 4 in Long context at #16 against #94.

As of Oct 15, 2026, Claude Sonnet 4 is ranked #35 in Math (since Oct 15, 2026; sources Humanity's Last Exam; methodology v1.0).

As of Oct 15, 2026, Muse Spark 1.2 is a former state-of-the-art holder in General LLM (since Sep 11, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).