# Claude Sonnet 4.5 vs GPT-5.4 Pro

As of Oct 14, 2026, Claude Sonnet 4.5 leads GPT-5.4 Pro in 0 of 3 shared categories.

Claude Sonnet 4.5: $6 per 1M blended tokens.

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

Claude Sonnet 4.5: closed weights.

GPT-5.4 Pro: closed weights.

- Which to pick, Math: As of Oct 14, 2026, GPT-5.4 Pro leads Claude Sonnet 4.5 in Math at #6 against #25.
- Which to pick, Science: As of Oct 14, 2026, GPT-5.4 Pro leads Claude Sonnet 4.5 in Science at #6 against #82.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, GPT-5.4 Pro leads Claude Sonnet 4.5 in Abstraction (ARC) at #8 against #66.

As of Oct 14, 2026, Claude Sonnet 4.5 is a former state-of-the-art holder in General LLM (since Oct 3, 2025; sources LMArena Text (style-controlled, overall); 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).