GPT-5.5 vs GPT-5 Mini
As of Oct 14, 2026, GPT-5.5 leads GPT-5 Mini in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
| Category | GPT-5.5 | GPT-5 Mini |
|---|---|---|
| General LLM | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 | #128 · #128 in General LLM Margin 87.07482993197279 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #25 · #25 in Reasoning Margin 17.808219178082197 LMArena leaderboard dataset · Oct 13, 2026 | #130 · #130 in Reasoning Margin 89.72602739726028 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #21 · Was SOTA · Math Margin 44.44444444444444 Epoch AI benchmarking hub · Aug 7, 2025 |
| Science | #30 · #30 in Science Margin — Epoch AI benchmarking hub · Apr 23, 2026 | #81 · #81 in Science Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
| 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 | #146 · #146 in Long context Margin 99.31972789115646 LMArena leaderboard dataset · Oct 13, 2026 |
| 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 | #110 · #110 in Factuality Margin 82.83582089552239 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 | #41 · #41 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
GPT-5.5: $11.25 per 1M blended tokens.
GPT-5 Mini: $0.6875 per 1M blended tokens.
GPT-5.5: closed weights.
GPT-5 Mini: closed weights.
General LLM: As of Oct 14, 2026, GPT-5.5 leads GPT-5 Mini in General LLM at #21 against #128.
Reasoning: As of Oct 14, 2026, GPT-5.5 leads GPT-5 Mini in Reasoning at #25 against #130.
Science: As of Oct 14, 2026, GPT-5.5 leads GPT-5 Mini in Science at #30 against #81.
Long context: As of Oct 14, 2026, GPT-5.5 leads GPT-5 Mini in Long context at #23 against #146.
Factuality: As of Oct 14, 2026, GPT-5.5 leads GPT-5 Mini in Factuality at #5 against #110.
Abstraction (ARC): As of Oct 14, 2026, GPT-5.5 leads GPT-5 Mini in Abstraction (ARC) at #7 against #41.
GPT-5.5 or GPT-5 Mini?
As of Oct 14, 2026, GPT-5.5 leads GPT-5 Mini in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
GPT-5.5 or GPT-5 Mini for General LLM?
As of Oct 14, 2026, GPT-5.5 leads GPT-5 Mini in General LLM at #21 against #128.
GPT-5.5 or GPT-5 Mini for Reasoning?
As of Oct 14, 2026, GPT-5.5 leads GPT-5 Mini in Reasoning at #25 against #130.
GPT-5.5 or GPT-5 Mini for Science?
As of Oct 14, 2026, GPT-5.5 leads GPT-5 Mini in Science at #30 against #81.