# Claude Opus 5 vs GPT-6.1 Sol

As of Oct 15, 2026, Claude Opus 5 leads GPT-6.1 Sol in 4 of 10 shared categories: General LLM, Reasoning, Long context, and Factuality.

Claude Opus 5: $10 per 1M blended tokens.

GPT-6.1 Sol: $4.000000000000001 per 1M blended tokens.

Claude Opus 5: closed weights.

GPT-6.1 Sol: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 5 leads GPT-6.1 Sol in General LLM at #11 against #18.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 5 leads GPT-6.1 Sol in Reasoning at #9 against #15.
- Which to pick, Science: As of Oct 15, 2026, GPT-6.1 Sol leads Claude Opus 5 in Science at #4 against #12.
- Which to pick, Coding: As of Oct 15, 2026, GPT-6.1 Sol leads Claude Opus 5 in Coding at #2 against #4.
- Which to pick, Coding › Agentic: As of Oct 15, 2026, GPT-6.1 Sol leads Claude Opus 5 in Coding › Agentic at #2 against #4.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, GPT-6.1 Sol leads Claude Opus 5 in Coding › Web dev at #4 against #6.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 5 leads GPT-6.1 Sol in Long context at #9 against #18.
- Which to pick, Vision: As of Oct 15, 2026, GPT-6.1 Sol leads Claude Opus 5 in Vision at #1 against #12.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 5 leads GPT-6.1 Sol in Factuality at #4 against #33.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, GPT-6.1 Sol leads Claude Opus 5 in Abstraction (ARC) at #1 against #3.

As of Oct 15, 2026, Claude Opus 5 is near state of the art, rank #4 in Factuality (since Oct 15, 2026; sources LMArena Text factuality; methodology v1.0).

As of Oct 15, 2026, GPT-6.1 Sol is tied for state of the art in Vision (since Sep 30, 2026; sources GDP.pdf; methodology v1.0).