# Claude Opus 5.5 vs GPT-4 Turbo

As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4 Turbo in 2 of 2 shared categories: General LLM and Science.

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

GPT-4 Turbo: $15.000000000000002 per 1M blended tokens.

Claude Opus 5.5: closed weights.

GPT-4 Turbo: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4 Turbo in General LLM at #2 against #10.
- Which to pick, Science: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4 Turbo in Science at #31 against #139.

As of Oct 14, 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 14, 2026, GPT-4 Turbo is ranked #10 in General LLM (since Oct 14, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).