# Claude Opus 4.6 vs GPT-6 Astra

As of Oct 15, 2026, Claude Opus 4.6 leads GPT-6 Astra in 4 of 7 shared categories: General LLM, Reasoning, Long context, and Factuality.

Claude Opus 4.6: $10 per 1M blended tokens.

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

Claude Opus 4.6: closed weights.

GPT-6 Astra: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 4.6 leads GPT-6 Astra in General LLM at #4 against #26.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 4.6 leads GPT-6 Astra in Reasoning at #2 against #24.
- Which to pick, Math: As of Oct 15, 2026, GPT-6 Astra leads Claude Opus 4.6 in Math at #1 against #11.
- Which to pick, Science: As of Oct 15, 2026, GPT-6 Astra leads Claude Opus 4.6 in Science at #2 against #32.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, GPT-6 Astra leads Claude Opus 4.6 in Coding › Web dev at #2 against #37.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 4.6 leads GPT-6 Astra in Long context at #2 against #25.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 4.6 leads GPT-6 Astra in Factuality at #3 against #29.

As of Oct 15, 2026, Claude Opus 4.6 is near state of the art, rank #2 in Reasoning (since Oct 15, 2026; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).

As of Oct 15, 2026, GPT-6 Astra is state of the art in Math (since Sep 28, 2026; sources Humanity's Last Exam; methodology v1.0).