# GPT-4.5 Preview vs Muse Spark 1.2

As of Oct 15, 2026, GPT-4.5 Preview leads Muse Spark 1.2 in 0 of 3 shared categories.

GPT-4.5 Preview: price per 1M tokens is unset in the catalog.

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

GPT-4.5 Preview: closed weights.

Muse Spark 1.2: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Muse Spark 1.2 leads GPT-4.5 Preview in General LLM at #8 against #79.
- Which to pick, Reasoning: As of Oct 15, 2026, Muse Spark 1.2 leads GPT-4.5 Preview in Reasoning at #11 against #121.
- Which to pick, Long context: As of Oct 15, 2026, Muse Spark 1.2 leads GPT-4.5 Preview in Long context at #17 against #93.

As of Oct 15, 2026, GPT-4.5 Preview is a former state-of-the-art holder in General LLM (since Oct 17, 2025; sources LMArena Text (style-controlled, overall); 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).