# Claude Sonnet 4.6 vs GPT-5.6 Terra

As of Oct 14, 2026, Claude Sonnet 4.6 leads GPT-5.6 Terra in 4 of 8 shared categories: General LLM, Reasoning, Coding › Web dev, and Long context.

Claude Sonnet 4.6: $6 per 1M blended tokens.

GPT-5.6 Terra: $4.5 per 1M blended tokens.

Claude Sonnet 4.6: closed weights.

GPT-5.6 Terra: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Sonnet 4.6 leads GPT-5.6 Terra in General LLM at #32 against #35.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Sonnet 4.6 leads GPT-5.6 Terra in Reasoning at #20 against #35.
- Which to pick, Science: As of Oct 14, 2026, GPT-5.6 Terra leads Claude Sonnet 4.6 in Science at #15 against #50.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, Claude Sonnet 4.6 leads GPT-5.6 Terra in Coding › Web dev at #41 against #42.
- Which to pick, Long context: As of Oct 14, 2026, Claude Sonnet 4.6 leads GPT-5.6 Terra in Long context at #20 against #46.
- Which to pick, Vision: As of Oct 14, 2026, GPT-5.6 Terra leads Claude Sonnet 4.6 in Vision at #11 against #23.
- Which to pick, Factuality: As of Oct 14, 2026, GPT-5.6 Terra leads Claude Sonnet 4.6 in Factuality at #24 against #34.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, GPT-5.6 Terra leads Claude Sonnet 4.6 in Abstraction (ARC) at #4 against #23.

As of Oct 14, 2026, Claude Sonnet 4.6 is a former state-of-the-art holder in Long context (since Mar 19, 2026; sources LMArena Text (style-controlled, longer query); methodology v1.0).

As of Oct 14, 2026, GPT-5.6 Terra is ranked #4 in Abstraction (ARC) (since Oct 14, 2026; sources ARC-AGI; methodology v1.0).