GPT-4.5 Preview vs GPT-5.5
As of Oct 15, 2026, GPT-4.5 Preview leads GPT-5.5 in 0 of 5 shared categories.
GPT-4.5 Preview
It used to be. Was SOTA in General LLM.
GPT-5.5
It used to be. Was SOTA in General LLM.
| Category | GPT-4.5 Preview | GPT-5.5 |
|---|---|---|
| General LLM | #62 · Was SOTA · General LLM Margin 42.17687074829932 LMArena leaderboard dataset · Oct 13, 2026 | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #93 · Was SOTA · Reasoning Margin 64.38356164383562 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in Reasoning Margin 17.808219178082197 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #38 · #38 in Math Margin 84.44444444444444 Epoch AI benchmarking hub · Feb 27, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #92 · #92 in Science Margin — Epoch AI benchmarking hub · Feb 27, 2025 | #30 · #30 in Science Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | — | #44 · #44 in Coding › Web dev Margin 40.18691588785047 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #76 · Was SOTA · Long context Margin 51.70068027210884 LMArena leaderboard dataset · Oct 13, 2026 | #23 · Was SOTA · Long context Margin 15.646258503401356 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #10 · Was SOTA · Vision Margin 28.94736842105263 Epoch AI benchmarking hub · Apr 23, 2026 |
| Factuality | — | #5 · Was SOTA · Factuality Margin 4.477611940298502 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #83 · #83 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Feb 27, 2025 | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
GPT-4.5 Preview: price per 1M tokens is unset in the catalog.
GPT-5.5: $11.25 per 1M blended tokens.
GPT-4.5 Preview: closed weights.
GPT-5.5: closed weights.
General LLM: As of Oct 15, 2026, GPT-5.5 leads GPT-4.5 Preview in General LLM at #21 against #62.
Reasoning: As of Oct 15, 2026, GPT-5.5 leads GPT-4.5 Preview in Reasoning at #25 against #93.
Science: As of Oct 15, 2026, GPT-5.5 leads GPT-4.5 Preview in Science at #30 against #92.
Long context: As of Oct 15, 2026, GPT-5.5 leads GPT-4.5 Preview in Long context at #23 against #76.
Abstraction (ARC): As of Oct 15, 2026, GPT-5.5 leads GPT-4.5 Preview in Abstraction (ARC) at #7 against #83.
GPT-4.5 Preview or GPT-5.5?
As of Oct 15, 2026, GPT-4.5 Preview leads GPT-5.5 in 0 of 5 shared categories.
GPT-4.5 Preview or GPT-5.5 for General LLM?
As of Oct 15, 2026, GPT-5.5 leads GPT-4.5 Preview in General LLM at #21 against #62.
GPT-4.5 Preview or GPT-5.5 for Reasoning?
As of Oct 15, 2026, GPT-5.5 leads GPT-4.5 Preview in Reasoning at #25 against #93.
GPT-4.5 Preview or GPT-5.5 for Science?
As of Oct 15, 2026, GPT-5.5 leads GPT-4.5 Preview in Science at #30 against #92.