GPT-5.5 vs O4 Mini
As of Oct 14, 2026, GPT-5.5 leads O4 Mini in 5 of 5 shared categories: General LLM, Reasoning, Science, Factuality, and Abstraction (ARC).
| Category | GPT-5.5 | O4 Mini |
|---|---|---|
| General LLM | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 | #125 · #125 in General LLM Margin 85.03401360544217 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #25 · #25 in Reasoning Margin 17.808219178082197 LMArena leaderboard dataset · Oct 13, 2026 | #129 · #129 in Reasoning Margin 89.04109589041096 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #23 · Was SOTA · Math Margin 48.888888888888886 Epoch AI benchmarking hub · Apr 16, 2025 |
| Science | #30 · #30 in Science Margin — Epoch AI benchmarking hub · Apr 23, 2026 | #70 · #70 in Science Margin — Epoch AI benchmarking hub · Apr 16, 2025 |
| 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 | #23 · Was SOTA · Long context Margin 15.646258503401356 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Jul 7, 2025 |
| Vision | #10 · Was SOTA · Vision Margin 28.94736842105263 Epoch AI benchmarking hub · Apr 23, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #5 · Was SOTA · Factuality Margin 4.477611940298502 LMArena leaderboard dataset · Oct 13, 2026 | #122 · #122 in Factuality Margin 91.7910447761194 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 | #39 · #39 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 16, 2025 |
GPT-5.5: $11.25 per 1M blended tokens.
O4 Mini: $1.9250000000000003 per 1M blended tokens.
GPT-5.5: closed weights.
O4 Mini: closed weights.
General LLM: As of Oct 14, 2026, GPT-5.5 leads O4 Mini in General LLM at #21 against #125.
Reasoning: As of Oct 14, 2026, GPT-5.5 leads O4 Mini in Reasoning at #25 against #129.
Science: As of Oct 14, 2026, GPT-5.5 leads O4 Mini in Science at #30 against #70.
Factuality: As of Oct 14, 2026, GPT-5.5 leads O4 Mini in Factuality at #5 against #122.
Abstraction (ARC): As of Oct 14, 2026, GPT-5.5 leads O4 Mini in Abstraction (ARC) at #7 against #39.
GPT-5.5 or O4 Mini?
As of Oct 14, 2026, GPT-5.5 leads O4 Mini in 5 of 5 shared categories: General LLM, Reasoning, Science, Factuality, and Abstraction (ARC).
GPT-5.5 or O4 Mini for General LLM?
As of Oct 14, 2026, GPT-5.5 leads O4 Mini in General LLM at #21 against #125.
GPT-5.5 or O4 Mini for Reasoning?
As of Oct 14, 2026, GPT-5.5 leads O4 Mini in Reasoning at #25 against #129.
GPT-5.5 or O4 Mini for Science?
As of Oct 14, 2026, GPT-5.5 leads O4 Mini in Science at #30 against #70.