GPT-4.5 Preview vs O3 Mini
As of Oct 15, 2026, GPT-4.5 Preview leads O3 Mini in 2 of 5 shared categories: Reasoning and Long context.
GPT-4.5 Preview
It used to be. Was SOTA in General LLM.
O3 Mini
It used to be. Was SOTA in Reasoning.
| Category | GPT-4.5 Preview | O3 Mini |
|---|---|---|
| General LLM | #79 · Was SOTA · General LLM Margin 42.02127659574468 LMArena leaderboard dataset · Oct 13, 2026 | #10 · #10 in General LLM Margin — LMArena leaderboard dataset · Apr 16, 2025 |
| Reasoning | #121 · Was SOTA · Reasoning Margin 64.8936170212766 LMArena leaderboard dataset · Oct 13, 2026 | #172 · Was SOTA · Reasoning Margin 92.02127659574468 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 | #76 · #76 in Science Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #93 · Was SOTA · Long context Margin 49.468085106382986 LMArena leaderboard dataset · Oct 13, 2026 | #186 · #186 in Long context Margin 98.93617021276596 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | — |
| Factuality | — | #— · Not enough data Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
| Abstraction (ARC) | #83 · #83 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Feb 27, 2025 | #51 · #51 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
GPT-4.5 Preview: price per 1M tokens is unset in the catalog.
O3 Mini: $1.9250000000000003 per 1M blended tokens.
GPT-4.5 Preview: closed weights.
O3 Mini: closed weights.
General LLM: As of Oct 15, 2026, O3 Mini leads GPT-4.5 Preview in General LLM at #10 against #79.
Reasoning: As of Oct 15, 2026, GPT-4.5 Preview leads O3 Mini in Reasoning at #121 against #172.
Science: As of Oct 15, 2026, O3 Mini leads GPT-4.5 Preview in Science at #76 against #92.
Long context: As of Oct 15, 2026, GPT-4.5 Preview leads O3 Mini in Long context at #93 against #186.
Abstraction (ARC): As of Oct 15, 2026, O3 Mini leads GPT-4.5 Preview in Abstraction (ARC) at #51 against #83.
GPT-4.5 Preview or O3 Mini?
As of Oct 15, 2026, GPT-4.5 Preview leads O3 Mini in 2 of 5 shared categories: Reasoning and Long context.
GPT-4.5 Preview or O3 Mini for General LLM?
As of Oct 15, 2026, O3 Mini leads GPT-4.5 Preview in General LLM at #10 against #79.
GPT-4.5 Preview or O3 Mini for Reasoning?
As of Oct 15, 2026, GPT-4.5 Preview leads O3 Mini in Reasoning at #121 against #172.
GPT-4.5 Preview or O3 Mini for Science?
As of Oct 15, 2026, O3 Mini leads GPT-4.5 Preview in Science at #76 against #92.