GPT-5.2 vs O3 Mini
As of Oct 14, 2026, GPT-5.2 leads O3 Mini in 4 of 5 shared categories: Reasoning, Science, Long context, and Abstraction (ARC).
GPT-5.2
#14 Best current rank: #14 in Math, as of Oct 14, 2026.
O3 Mini
It used to be. Was SOTA in Reasoning.
| Category | GPT-5.2 | O3 Mini |
|---|---|---|
| General LLM | #74 · #74 in General LLM Margin 50.34013605442177 LMArena leaderboard dataset · Oct 13, 2026 | #7 · #7 in General LLM Margin — LMArena leaderboard dataset · Apr 16, 2025 |
| Reasoning | #70 · #70 in Reasoning Margin 48.63013698630137 LMArena leaderboard dataset · Oct 13, 2026 | #133 · Was SOTA · Reasoning Margin 91.78082191780823 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #14 · #14 in Math Margin 28.888888888888886 Epoch AI benchmarking hub · Dec 11, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #26 · #26 in Science Margin — Epoch AI benchmarking hub · Dec 11, 2025 | #76 · #76 in Science Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Dec 11, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #67 · #67 in Coding › Web dev Margin 61.6822429906542 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #80 · #80 in Long context Margin 54.42176870748299 LMArena leaderboard dataset · Oct 13, 2026 | #145 · #145 in Long context Margin 98.63945578231292 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | — |
| Factuality | #65 · #65 in Factuality Margin 49.25373134328358 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
| Abstraction (ARC) | #24 · #24 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Dec 11, 2025 | #51 · #51 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
GPT-5.2: $4.8125 per 1M blended tokens.
O3 Mini: $1.9250000000000003 per 1M blended tokens.
GPT-5.2: closed weights.
O3 Mini: closed weights.
General LLM: As of Oct 14, 2026, O3 Mini leads GPT-5.2 in General LLM at #7 against #74.
Reasoning: As of Oct 14, 2026, GPT-5.2 leads O3 Mini in Reasoning at #70 against #133.
Science: As of Oct 14, 2026, GPT-5.2 leads O3 Mini in Science at #26 against #76.
Long context: As of Oct 14, 2026, GPT-5.2 leads O3 Mini in Long context at #80 against #145.
Abstraction (ARC): As of Oct 14, 2026, GPT-5.2 leads O3 Mini in Abstraction (ARC) at #24 against #51.
GPT-5.2 or O3 Mini?
As of Oct 14, 2026, GPT-5.2 leads O3 Mini in 4 of 5 shared categories: Reasoning, Science, Long context, and Abstraction (ARC).
GPT-5.2 or O3 Mini for General LLM?
As of Oct 14, 2026, O3 Mini leads GPT-5.2 in General LLM at #7 against #74.
GPT-5.2 or O3 Mini for Reasoning?
As of Oct 14, 2026, GPT-5.2 leads O3 Mini in Reasoning at #70 against #133.
GPT-5.2 or O3 Mini for Science?
As of Oct 14, 2026, GPT-5.2 leads O3 Mini in Science at #26 against #76.