# Claude Opus 4.8 vs GPT-6 Astra

As of Oct 15, 2026, Claude Opus 4.8 leads GPT-6 Astra in 4 of 10 shared categories: General LLM, Reasoning, Long context, and Factuality.

Claude Opus 4.8: $10 per 1M blended tokens.

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

Claude Opus 4.8: closed weights.

GPT-6 Astra: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 4.8 leads GPT-6 Astra in General LLM at #21 against #26.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 4.8 leads GPT-6 Astra in Reasoning at #10 against #24.
- Which to pick, Science: As of Oct 15, 2026, GPT-6 Astra leads Claude Opus 4.8 in Science at #2 against #27.
- Which to pick, Coding: As of Oct 15, 2026, GPT-6 Astra leads Claude Opus 4.8 in Coding at #2 against #12.
- Which to pick, Coding › Agentic: As of Oct 15, 2026, GPT-6 Astra leads Claude Opus 4.8 in Coding › Agentic at #2 against #12.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, GPT-6 Astra leads Claude Opus 4.8 in Coding › Web dev at #2 against #35.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 4.8 leads GPT-6 Astra in Long context at #10 against #25.
- Which to pick, Vision: As of Oct 15, 2026, GPT-6 Astra leads Claude Opus 4.8 in Vision at #1 against #13.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 4.8 leads GPT-6 Astra in Factuality at #24 against #29.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, GPT-6 Astra leads Claude Opus 4.8 in Abstraction (ARC) at #1 against #12.

As of Oct 15, 2026, Claude Opus 4.8 is a former state-of-the-art holder in Coding › Web dev (since Jun 5, 2026; sources LMArena WebDev; 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).