# Claude Fable 5.1 vs GPT-5.6 Terra

As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.6 Terra in 9 of 9 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).

Claude Fable 5.1: $20 per 1M blended tokens.

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

Claude Fable 5.1: closed weights.

GPT-5.6 Terra: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.6 Terra in General LLM at #6 against #35.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.6 Terra in Reasoning at #5 against #35.
- Which to pick, Coding: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.6 Terra in Coding at #3 against #13.
- Which to pick, Coding › Agentic: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.6 Terra in Coding › Agentic at #3 against #13.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.6 Terra in Coding › Web dev at #5 against #42.
- Which to pick, Long context: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.6 Terra in Long context at #6 against #46.
- Which to pick, Vision: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.6 Terra in Vision at #6 against #11.
- Which to pick, Factuality: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.6 Terra in Factuality at #1 against #24.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.6 Terra in Abstraction (ARC) at #3 against #4.

As of Oct 14, 2026, Claude Fable 5.1 is tied for state of the art in Factuality (since Oct 2, 2026; sources LMArena Text factuality; 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).