Claude Fable 5 vs GPT-5.4 Nano
As of Oct 14, 2026, Claude Fable 5 leads GPT-5.4 Nano in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Fable 5
Close. Near-SOTA in General LLM, rank #3.
GPT-5.4 Nano
#43 Best recorded rank: #43 in Abstraction (ARC), as of Oct 14, 2026.
| Category | Claude Fable 5 | GPT-5.4 Nano |
|---|---|---|
| General LLM | #3 · Near-SOTA · General LLM Margin 2.040816326530617 LMArena leaderboard dataset · Oct 13, 2026 | #114 · #114 in General LLM Margin 77.55102040816327 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #3 · Near-SOTA · Reasoning Margin 2.7397260273972535 LMArena leaderboard dataset · Oct 13, 2026 | #109 · #109 in Reasoning Margin 75.34246575342466 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #56 · #56 in Science Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #73 · #73 in Science Margin — Epoch AI benchmarking hub · Mar 17, 2026 |
| Coding | #6 · #6 in Coding Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #6 · #6 in Coding › Agentic Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #17 · Was SOTA · Coding › Web dev Margin 14.953271028037378 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #3 · Near-SOTA · Long context Margin 2.040816326530603 LMArena leaderboard dataset · Oct 13, 2026 | #120 · #120 in Long context Margin 81.63265306122449 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #5 · Was SOTA · Vision Margin 15.78947368421052 Epoch AI benchmarking hub · Jun 9, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #7 · Was SOTA · Factuality Margin 5.97014925373135 LMArena leaderboard dataset · Oct 13, 2026 | #98 · #98 in Factuality Margin 73.88059701492537 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #43 · #43 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Mar 17, 2026 |
Claude Fable 5: $20 per 1M blended tokens.
GPT-5.4 Nano: $0.4625 per 1M blended tokens.
Claude Fable 5: closed weights.
GPT-5.4 Nano: closed weights.
General LLM: As of Oct 14, 2026, Claude Fable 5 leads GPT-5.4 Nano in General LLM at #3 against #114.
Reasoning: As of Oct 14, 2026, Claude Fable 5 leads GPT-5.4 Nano in Reasoning at #3 against #109.
Science: As of Oct 14, 2026, Claude Fable 5 leads GPT-5.4 Nano in Science at #56 against #73.
Long context: As of Oct 14, 2026, Claude Fable 5 leads GPT-5.4 Nano in Long context at #3 against #120.
Factuality: As of Oct 14, 2026, Claude Fable 5 leads GPT-5.4 Nano in Factuality at #7 against #98.
Abstraction (ARC): As of Oct 14, 2026, Claude Fable 5 leads GPT-5.4 Nano in Abstraction (ARC) at #1 against #43.
Claude Fable 5 or GPT-5.4 Nano?
As of Oct 14, 2026, Claude Fable 5 leads GPT-5.4 Nano in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Fable 5 or GPT-5.4 Nano for General LLM?
As of Oct 14, 2026, Claude Fable 5 leads GPT-5.4 Nano in General LLM at #3 against #114.
Claude Fable 5 or GPT-5.4 Nano for Reasoning?
As of Oct 14, 2026, Claude Fable 5 leads GPT-5.4 Nano in Reasoning at #3 against #109.
Claude Fable 5 or GPT-5.4 Nano for Science?
As of Oct 14, 2026, Claude Fable 5 leads GPT-5.4 Nano in Science at #56 against #73.