# GPT-5.5 vs Muse Spark 1.2

As of Oct 14, 2026, GPT-5.5 leads Muse Spark 1.2 in 2 of 6 shared categories: Vision and Factuality.

GPT-5.5: $11.25 per 1M blended tokens.

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

GPT-5.5: closed weights.

Muse Spark 1.2: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Muse Spark 1.2 leads GPT-5.5 in General LLM at #8 against #21.
- Which to pick, Reasoning: As of Oct 14, 2026, Muse Spark 1.2 leads GPT-5.5 in Reasoning at #11 against #25.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, Muse Spark 1.2 leads GPT-5.5 in Coding › Web dev at #40 against #44.
- Which to pick, Long context: As of Oct 14, 2026, Muse Spark 1.2 leads GPT-5.5 in Long context at #16 against #23.
- Which to pick, Vision: As of Oct 14, 2026, GPT-5.5 leads Muse Spark 1.2 in Vision at #10 against #27.
- Which to pick, Factuality: As of Oct 14, 2026, GPT-5.5 leads Muse Spark 1.2 in Factuality at #5 against #9.

As of Oct 14, 2026, GPT-5.5 is a former state-of-the-art holder in General LLM (since Apr 28, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).

As of Oct 14, 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).