# Claude Sonnet 5.5 vs GPT-5.4 Pro

As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 Pro in 2 of 2 shared categories: Math and Science.

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

GPT-5.4 Pro: $67.5 per 1M blended tokens.

Claude Sonnet 5.5: closed weights.

GPT-5.4 Pro: closed weights.

- Which to pick, Math: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 Pro in Math at #4 against #6.
- Which to pick, Science: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 Pro in Science at #3 against #6.

As of Oct 14, 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 14, 2026, GPT-5.4 Pro is a former state-of-the-art holder in Math (since Apr 16, 2026; sources Humanity's Last Exam; methodology v1.0).