# Muse Spark 1.3 vs O4 Mini

As of Oct 15, 2026, Muse Spark 1.3 leads O4 Mini in 3 of 3 shared categories: General LLM, Reasoning, and Factuality.

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

O4 Mini: $1.9250000000000003 per 1M blended tokens.

Muse Spark 1.3: closed weights.

O4 Mini: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Muse Spark 1.3 leads O4 Mini in General LLM at #9 against #162.
- Which to pick, Reasoning: As of Oct 15, 2026, Muse Spark 1.3 leads O4 Mini in Reasoning at #8 against #168.
- Which to pick, Factuality: As of Oct 15, 2026, Muse Spark 1.3 leads O4 Mini in Factuality at #12 against #160.

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).

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).