# Muse Spark vs O4 Mini

As of Oct 15, 2026, Muse Spark leads O4 Mini in 5 of 5 shared categories: General LLM, Reasoning, Math, Science, and Factuality.

Muse Spark: price per 1M tokens is unset in the catalog.

O4 Mini: $1.9250000000000003 per 1M blended tokens.

Muse Spark: closed weights.

O4 Mini: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Muse Spark leads O4 Mini in General LLM at #12 against #162.
- Which to pick, Reasoning: As of Oct 15, 2026, Muse Spark leads O4 Mini in Reasoning at #17 against #168.
- Which to pick, Math: As of Oct 15, 2026, Muse Spark leads O4 Mini in Math at #7 against #23.
- Which to pick, Science: As of Oct 15, 2026, Muse Spark leads O4 Mini in Science at #37 against #70.
- Which to pick, Factuality: As of Oct 15, 2026, Muse Spark leads O4 Mini in Factuality at #27 against #160.

As of Oct 15, 2026, Muse Spark is a former state-of-the-art holder in General LLM (since May 18, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).

As of Oct 15, 2026, O4 Mini is a former state-of-the-art holder in Math (since Jul 20, 2025; sources Humanity's Last Exam; methodology v1.0).