# Claude Opus 4.6 vs GPT-5.6 Luna

As of Oct 14, 2026, Claude Opus 4.6 leads GPT-5.6 Luna in 5 of 6 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.

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

GPT-5.6 Luna: $0.44999999999999996 per 1M blended tokens.

Claude Opus 4.6: closed weights.

GPT-5.6 Luna: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Opus 4.6 leads GPT-5.6 Luna in General LLM at #4 against #53.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Opus 4.6 leads GPT-5.6 Luna in Reasoning at #2 against #55.
- Which to pick, Science: As of Oct 14, 2026, GPT-5.6 Luna leads Claude Opus 4.6 in Science at #25 against #32.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, Claude Opus 4.6 leads GPT-5.6 Luna in Coding › Web dev at #35 against #43.
- Which to pick, Long context: As of Oct 14, 2026, Claude Opus 4.6 leads GPT-5.6 Luna in Long context at #2 against #65.
- Which to pick, Factuality: As of Oct 14, 2026, Claude Opus 4.6 leads GPT-5.6 Luna in Factuality at #3 against #35.

As of Oct 14, 2026, Claude Opus 4.6 is near state of the art, rank #2 in Reasoning (since Oct 14, 2026; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).

As of Oct 14, 2026, GPT-5.6 Luna is ranked #16 in Coding (since Oct 14, 2026; sources Terminal-Bench 4.0; methodology v1.0).