GPT-5.4 vs GPT-5.5
As of Oct 15, 2026, GPT-5.4 leads GPT-5.5 in 1 of 7 shared categories: Science.
| Category | GPT-5.4 | GPT-5.5 |
|---|---|---|
| General LLM | #30 · Was SOTA · General LLM Margin 15.957446808510639 LMArena leaderboard dataset · Oct 13, 2026 | #22 · Was SOTA · General LLM Margin 11.702127659574472 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #32 · #32 in Reasoning Margin 17.55319148936171 LMArena leaderboard dataset · Oct 13, 2026 | #26 · #26 in Reasoning Margin 14.36170212765957 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #9 · #9 in Math Margin 17.777777777777757 Epoch AI benchmarking hub · Mar 5, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #16 · #16 in Science Margin — Epoch AI benchmarking hub · Mar 5, 2026 | #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 | #60 · #60 in Coding › Web dev Margin 47.2 LMArena leaderboard dataset · Oct 13, 2026 | #48 · #48 in Coding › Web dev Margin 37.6 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #40 · #40 in Long context Margin 21.276595744680847 LMArena leaderboard dataset · Oct 13, 2026 | #26 · Was SOTA · Long context Margin 13.829787234042556 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 | #6 · Was SOTA · Factuality Margin 4.0697674418604635 LMArena leaderboard dataset · Oct 13, 2026 | #5 · Near-SOTA · Factuality Margin 3.4883720930232442 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #10 · #10 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Mar 5, 2026 | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
GPT-5.4: $5.625 per 1M blended tokens.
GPT-5.5: $11.25 per 1M blended tokens.
GPT-5.4: closed weights.
GPT-5.5: closed weights.
General LLM: As of Oct 15, 2026, GPT-5.5 leads GPT-5.4 in General LLM at #22 against #30.
Reasoning: As of Oct 15, 2026, GPT-5.5 leads GPT-5.4 in Reasoning at #26 against #32.
Science: As of Oct 15, 2026, GPT-5.4 leads GPT-5.5 in Science at #16 against #30.
Coding › Web dev: As of Oct 15, 2026, GPT-5.5 leads GPT-5.4 in Coding › Web dev at #48 against #60.
Long context: As of Oct 15, 2026, GPT-5.5 leads GPT-5.4 in Long context at #26 against #40.
Factuality: As of Oct 15, 2026, GPT-5.5 leads GPT-5.4 in Factuality at #5 against #6.
Abstraction (ARC): As of Oct 15, 2026, GPT-5.5 leads GPT-5.4 in Abstraction (ARC) at #7 against #10.
GPT-5.4 or GPT-5.5?
As of Oct 15, 2026, GPT-5.4 leads GPT-5.5 in 1 of 7 shared categories: Science.
GPT-5.4 or GPT-5.5 for General LLM?
As of Oct 15, 2026, GPT-5.5 leads GPT-5.4 in General LLM at #22 against #30.
GPT-5.4 or GPT-5.5 for Reasoning?
As of Oct 15, 2026, GPT-5.5 leads GPT-5.4 in Reasoning at #26 against #32.
GPT-5.4 or GPT-5.5 for Science?
As of Oct 15, 2026, GPT-5.4 leads GPT-5.5 in Science at #16 against #30.