Claude Fable 5 vs GPT-4.5 Preview
As of Oct 14, 2026, Claude Fable 5 leads GPT-4.5 Preview in 5 of 5 shared categories: General LLM, Reasoning, Science, Long context, and Abstraction (ARC).
Claude Fable 5
Close. Near-SOTA in General LLM, rank #3.
GPT-4.5 Preview
It used to be. Was SOTA in General LLM.
| Category | Claude Fable 5 | GPT-4.5 Preview |
|---|---|---|
| General LLM | #3 · Near-SOTA · General LLM Margin 2.040816326530617 LMArena leaderboard dataset · Oct 13, 2026 | #62 · Was SOTA · General LLM Margin 42.17687074829932 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #3 · Near-SOTA · Reasoning Margin 2.7397260273972535 LMArena leaderboard dataset · Oct 13, 2026 | #93 · Was SOTA · Reasoning Margin 64.38356164383562 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #38 · #38 in Math Margin 84.44444444444444 Epoch AI benchmarking hub · Feb 27, 2025 |
| Science | #56 · #56 in Science Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #92 · #92 in Science Margin — Epoch AI benchmarking hub · Feb 27, 2025 |
| 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 | #76 · Was SOTA · Long context Margin 51.70068027210884 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 | — |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #83 · #83 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Feb 27, 2025 |
Claude Fable 5: $20 per 1M blended tokens.
GPT-4.5 Preview: price per 1M tokens is unset in the catalog.
Claude Fable 5: closed weights.
GPT-4.5 Preview: closed weights.
General LLM: As of Oct 14, 2026, Claude Fable 5 leads GPT-4.5 Preview in General LLM at #3 against #62.
Reasoning: As of Oct 14, 2026, Claude Fable 5 leads GPT-4.5 Preview in Reasoning at #3 against #93.
Science: As of Oct 14, 2026, Claude Fable 5 leads GPT-4.5 Preview in Science at #56 against #92.
Long context: As of Oct 14, 2026, Claude Fable 5 leads GPT-4.5 Preview in Long context at #3 against #76.
Abstraction (ARC): As of Oct 14, 2026, Claude Fable 5 leads GPT-4.5 Preview in Abstraction (ARC) at #1 against #83.
Claude Fable 5 · GPT-4.5 Preview
Claude Fable 5 or GPT-4.5 Preview?
As of Oct 14, 2026, Claude Fable 5 leads GPT-4.5 Preview in 5 of 5 shared categories: General LLM, Reasoning, Science, Long context, and Abstraction (ARC).
Claude Fable 5 or GPT-4.5 Preview for General LLM?
As of Oct 14, 2026, Claude Fable 5 leads GPT-4.5 Preview in General LLM at #3 against #62.
Claude Fable 5 or GPT-4.5 Preview for Reasoning?
As of Oct 14, 2026, Claude Fable 5 leads GPT-4.5 Preview in Reasoning at #3 against #93.
Claude Fable 5 or GPT-4.5 Preview for Science?
As of Oct 14, 2026, Claude Fable 5 leads GPT-4.5 Preview in Science at #56 against #92.