# Claude Sonnet 5.5 vs GPT-4O

As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-4O in 2 of 2 shared categories: Math and Science.

Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.

GPT-4O: $4.375000000000001 per 1M blended tokens.

Claude Sonnet 5.5: closed weights.

GPT-4O: closed weights.

- Which to pick, Math: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-4O in Math at #4 against #45.
- Which to pick, Science: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-4O in Science at #3 against #131.

As of Oct 15, 2026, Claude Sonnet 5.5 is tied for state of the art in Coding (since Oct 6, 2026; sources Terminal-Bench 4.0; methodology v1.0).

As of Oct 15, 2026, GPT-4O is a former state-of-the-art holder in General LLM (since Aug 28, 2024; sources LMArena Text (style-controlled, overall); methodology v1.0).