# GPT-5.5 vs GPT-6 Astra

As of Oct 14, 2026, GPT-5.5 leads GPT-6 Astra in 2 of 8 shared categories: General LLM and Factuality.

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

GPT-6 Astra: $20 per 1M blended tokens.

GPT-5.5: closed weights.

GPT-6 Astra: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, GPT-5.5 leads GPT-6 Astra in General LLM at #21 against #25.
- Which to pick, Reasoning: As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Reasoning at #23 against #25.
- Which to pick, Science: As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Science at #2 against #30.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Coding › Web dev at #2 against #44.
- Which to pick, Long context: As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Long context at #22 against #23.
- Which to pick, Vision: As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Vision at #1 against #10.
- Which to pick, Factuality: As of Oct 14, 2026, GPT-5.5 leads GPT-6 Astra in Factuality at #5 against #25.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, GPT-6 Astra leads GPT-5.5 in Abstraction (ARC) at #1 against #7.

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, GPT-6 Astra is state of the art in Math (since Sep 28, 2026; sources Humanity's Last Exam; methodology v1.0).