GPT-5 vs O3 Mini
As of Oct 15, 2026, GPT-5 leads O3 Mini in 4 of 5 shared categories: Reasoning, Science, Long context, and Abstraction (ARC).
| Category | GPT-5 | O3 Mini |
|---|---|---|
| General LLM | #95 · Was SOTA · General LLM Margin 50.53191489361702 LMArena leaderboard dataset · Oct 13, 2026 | #10 · #10 in General LLM Margin — LMArena leaderboard dataset · Apr 16, 2025 |
| Reasoning | #103 · Was SOTA · Reasoning Margin 55.319148936170215 LMArena leaderboard dataset · Oct 13, 2026 | #172 · Was SOTA · Reasoning Margin 92.02127659574468 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #15 · Was SOTA · Math Margin 31.111111111111114 Epoch AI benchmarking hub · Aug 7, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #54 · #54 in Science Margin — Epoch AI benchmarking hub · Aug 7, 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 |
| Coding › Web dev | #72 · #72 in Coding › Web dev Margin 56.8 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #142 · Was SOTA · Long context Margin 75.53191489361703 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 | #119 · #119 in Factuality Margin 69.76744186046511 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
| Abstraction (ARC) | #34 · #34 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 7, 2025 | #51 · #51 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
GPT-5: $3.4375000000000004 per 1M blended tokens.
O3 Mini: $1.9250000000000003 per 1M blended tokens.
GPT-5: closed weights.
O3 Mini: closed weights.
General LLM: As of Oct 15, 2026, O3 Mini leads GPT-5 in General LLM at #10 against #95.
Reasoning: As of Oct 15, 2026, GPT-5 leads O3 Mini in Reasoning at #103 against #172.
Science: As of Oct 15, 2026, GPT-5 leads O3 Mini in Science at #54 against #76.
Long context: As of Oct 15, 2026, GPT-5 leads O3 Mini in Long context at #142 against #186.
Abstraction (ARC): As of Oct 15, 2026, GPT-5 leads O3 Mini in Abstraction (ARC) at #34 against #51.
GPT-5 or O3 Mini?
As of Oct 15, 2026, GPT-5 leads O3 Mini in 4 of 5 shared categories: Reasoning, Science, Long context, and Abstraction (ARC).
GPT-5 or O3 Mini for General LLM?
As of Oct 15, 2026, O3 Mini leads GPT-5 in General LLM at #10 against #95.
GPT-5 or O3 Mini for Reasoning?
As of Oct 15, 2026, GPT-5 leads O3 Mini in Reasoning at #103 against #172.
GPT-5 or O3 Mini for Science?
As of Oct 15, 2026, GPT-5 leads O3 Mini in Science at #54 against #76.