# GPT-5.5 Instant vs Muse Spark 1.2

As of Oct 15, 2026, GPT-5.5 Instant leads Muse Spark 1.2 in 0 of 4 shared categories.

GPT-5.5 Instant: price per 1M tokens is unset in the catalog.

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

GPT-5.5 Instant: closed weights.

Muse Spark 1.2: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Muse Spark 1.2 leads GPT-5.5 Instant in General LLM at #8 against #36.
- Which to pick, Reasoning: As of Oct 15, 2026, Muse Spark 1.2 leads GPT-5.5 Instant in Reasoning at #11 against #38.
- Which to pick, Long context: As of Oct 15, 2026, Muse Spark 1.2 leads GPT-5.5 Instant in Long context at #17 against #46.
- Which to pick, Factuality: As of Oct 15, 2026, Muse Spark 1.2 leads GPT-5.5 Instant in Factuality at #9 against #78.

As of Oct 15, 2026, GPT-5.5 Instant is ranked #36 in General LLM (since Oct 15, 2026; 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).