Claude 3 Opus vs O3 Mini
As of Oct 14, 2026, Claude 3 Opus leads O3 Mini in 0 of 2 shared categories.
Claude 3 Opus
#9 Best recorded rank: #9 in General LLM, as of Oct 14, 2026.
O3 Mini
It used to be. Was SOTA in Reasoning.
| Category | Claude 3 Opus | O3 Mini |
|---|---|---|
| General LLM | #9 · #9 in General LLM Margin — LMArena leaderboard dataset · Sep 27, 2024 | #7 · #7 in General LLM Margin — LMArena leaderboard dataset · Apr 16, 2025 |
| Reasoning | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 7, 2024 | #133 · Was SOTA · Reasoning Margin 91.78082191780823 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | — | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #138 · #138 in Science Margin — Epoch AI benchmarking hub · Feb 29, 2024 | #76 · #76 in Science Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
| Coding | — | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | — | #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 | #— · Not enough data Margin — Epoch AI benchmarking hub · Feb 29, 2024 | #— · Not enough data Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
| Abstraction (ARC) | — | #51 · #51 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
Claude 3 Opus: price per 1M tokens is unset in the catalog.
O3 Mini: $1.9250000000000003 per 1M blended tokens.
Claude 3 Opus: closed weights.
O3 Mini: closed weights.
General LLM: As of Oct 14, 2026, O3 Mini leads Claude 3 Opus in General LLM at #7 against #9.
Science: As of Oct 14, 2026, O3 Mini leads Claude 3 Opus in Science at #76 against #138.
Claude 3 Opus or O3 Mini?
As of Oct 14, 2026, Claude 3 Opus leads O3 Mini in 0 of 2 shared categories.
Claude 3 Opus or O3 Mini for General LLM?
As of Oct 14, 2026, O3 Mini leads Claude 3 Opus in General LLM at #7 against #9.
Claude 3 Opus or O3 Mini for Science?
As of Oct 14, 2026, O3 Mini leads Claude 3 Opus in Science at #76 against #138.