# Claude Sonnet 5.5 vs GPT-4.1

As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-4.1 in 6 of 6 shared categories: General LLM, Reasoning, Math, Science, Long context, and Factuality.

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

GPT-4.1: $3.5 per 1M blended tokens.

Claude Sonnet 5.5: closed weights.

GPT-4.1: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-4.1 in General LLM at #27 against #101.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-4.1 in Reasoning at #18 against #102.
- Which to pick, Math: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-4.1 in Math at #4 against #39.
- Which to pick, Science: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-4.1 in Science at #3 against #96.
- Which to pick, Long context: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-4.1 in Long context at #11 against #95.
- Which to pick, Factuality: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-4.1 in Factuality at #16 against #103.

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-4.1 is a former state-of-the-art holder in Long context (since May 11, 2025; sources LMArena Text (style-controlled, longer query); methodology v1.0).