# Claude Sonnet 5 vs GPT-5.5

As of Oct 15, 2026, Claude Sonnet 5 leads GPT-5.5 in 1 of 6 shared categories: Coding › Web dev.

Claude Sonnet 5: $4.000000000000001 per 1M blended tokens.

GPT-5.5: $11.25 per 1M blended tokens.

Claude Sonnet 5: closed weights.

GPT-5.5: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, GPT-5.5 leads Claude Sonnet 5 in General LLM at #22 against #50.
- Which to pick, Reasoning: As of Oct 15, 2026, GPT-5.5 leads Claude Sonnet 5 in Reasoning at #26 against #40.
- Which to pick, Science: As of Oct 15, 2026, GPT-5.5 leads Claude Sonnet 5 in Science at #30 against #32.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Sonnet 5 leads GPT-5.5 in Coding › Web dev at #40 against #48.
- Which to pick, Long context: As of Oct 15, 2026, GPT-5.5 leads Claude Sonnet 5 in Long context at #26 against #36.
- Which to pick, Factuality: As of Oct 15, 2026, GPT-5.5 leads Claude Sonnet 5 in Factuality at #5 against #56.

As of Oct 15, 2026, Claude Sonnet 5 is ranked #19 in Coding (since Oct 15, 2026; sources Terminal-Bench 4.0; methodology v1.0).

As of Oct 15, 2026, GPT-5.5 is near state of the art, rank #5 in Factuality (since Oct 15, 2026; sources LMArena Text factuality; methodology v1.0).