# Claude Opus 4 vs GPT-5.6 Terra

As of Oct 15, 2026, Claude Opus 4 leads GPT-5.6 Terra in 0 of 5 shared categories.

Claude Opus 4: price per 1M tokens is unset in the catalog.

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

Claude Opus 4: closed weights.

GPT-5.6 Terra: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, GPT-5.6 Terra leads Claude Opus 4 in General LLM at #44 against #131.
- Which to pick, Reasoning: As of Oct 15, 2026, GPT-5.6 Terra leads Claude Opus 4 in Reasoning at #41 against #125.
- Which to pick, Science: As of Oct 15, 2026, GPT-5.6 Terra leads Claude Opus 4 in Science at #15 against #91.
- Which to pick, Long context: As of Oct 15, 2026, GPT-5.6 Terra leads Claude Opus 4 in Long context at #54 against #86.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, GPT-5.6 Terra leads Claude Opus 4 in Abstraction (ARC) at #4 against #69.

As of Oct 15, 2026, Claude Opus 4 is a former state-of-the-art holder in Reasoning (since Jun 3, 2025; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).

As of Oct 15, 2026, GPT-5.6 Terra is ranked #4 in Abstraction (ARC) (since Oct 15, 2026; sources ARC-AGI; methodology v1.0).