# Claude 3 Opus vs GPT-5.5 Instant

As of Oct 15, 2026, Claude 3 Opus leads GPT-5.5 Instant in 1 of 2 shared categories: General LLM.

Claude 3 Opus: price per 1M tokens is unset in the catalog.

GPT-5.5 Instant: price per 1M tokens is unset in the catalog.

Claude 3 Opus: closed weights.

GPT-5.5 Instant: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude 3 Opus leads GPT-5.5 Instant in General LLM at #11 against #36.
- Which to pick, Science: As of Oct 15, 2026, GPT-5.5 Instant leads Claude 3 Opus in Science at #65 against #138.

As of Oct 15, 2026, Claude 3 Opus is ranked #11 in General LLM (since Oct 15, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).

As of Oct 15, 2026, GPT-5.5 Instant is ranked #36 in General LLM (since Oct 15, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).