# Claude Opus 5.5 vs GPT-5.4 Mini

As of Oct 15, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in 7 of 7 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).

Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.

GPT-5.4 Mini: $1.6875 per 1M blended tokens.

Claude Opus 5.5: closed weights.

GPT-5.4 Mini: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in General LLM at #2 against #75.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Reasoning at #1 against #74.
- Which to pick, Science: As of Oct 15, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Science at #31 against #52.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Coding › Web dev at #1 against #81.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Long context at #1 against #87.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Factuality at #1 against #65.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Abstraction (ARC) at #1 against #36.

As of Oct 15, 2026, Claude Opus 5.5 is tied for state of the art in Reasoning (since Oct 2, 2026; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).

As of Oct 15, 2026, GPT-5.4 Mini is ranked #36 in Abstraction (ARC) (since Oct 15, 2026; sources ARC-AGI; methodology v1.0).