# Muse Spark vs O3

As of Oct 15, 2026, Muse Spark leads O3 in 6 of 6 shared categories: General LLM, Reasoning, Math, Science, Long context, and Factuality.

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

O3: $3.5 per 1M blended tokens.

Muse Spark: closed weights.

O3: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Muse Spark leads O3 in General LLM at #12 against #100.
- Which to pick, Reasoning: As of Oct 15, 2026, Muse Spark leads O3 in Reasoning at #17 against #117.
- Which to pick, Math: As of Oct 15, 2026, Muse Spark leads O3 in Math at #7 against #20.
- Which to pick, Science: As of Oct 15, 2026, Muse Spark leads O3 in Science at #37 against #67.
- Which to pick, Long context: As of Oct 15, 2026, Muse Spark leads O3 in Long context at #44 against #145.
- Which to pick, Factuality: As of Oct 15, 2026, Muse Spark leads O3 in Factuality at #27 against #139.

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, O3 is a former state-of-the-art holder in General LLM (since Jul 28, 2025; sources LMArena Text (style-controlled, overall); methodology v1.0).