Claude 3.5 Sonnet vs O3 Mini
As of Oct 14, 2026, Claude 3.5 Sonnet leads O3 Mini in 1 of 4 shared categories: Long context.
Claude 3.5 Sonnet
It used to be. Was SOTA in General LLM.
O3 Mini
It used to be. Was SOTA in Reasoning.
| Category | Claude 3.5 Sonnet | O3 Mini |
|---|---|---|
| General LLM | #140 · Was SOTA · General LLM Margin 95.23809523809524 LMArena leaderboard dataset · Oct 13, 2026 | #7 · #7 in General LLM Margin — LMArena leaderboard dataset · Apr 16, 2025 |
| Reasoning | #136 · Was SOTA · Reasoning Margin 93.83561643835617 LMArena leaderboard dataset · Oct 13, 2026 | #133 · Was SOTA · Reasoning Margin 91.78082191780823 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #43 · #43 in Math Margin 95.55555555555556 Epoch AI benchmarking hub · Oct 22, 2024 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #119 · #119 in Science Margin — Epoch AI benchmarking hub · Oct 22, 2024 | #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 | #126 · Was SOTA · Long context Margin 85.71428571428571 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 | — | #— · 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 3.5 Sonnet: price per 1M tokens is unset in the catalog.
O3 Mini: $1.9250000000000003 per 1M blended tokens.
Claude 3.5 Sonnet: closed weights.
O3 Mini: closed weights.
General LLM: As of Oct 14, 2026, O3 Mini leads Claude 3.5 Sonnet in General LLM at #7 against #140.
Reasoning: As of Oct 14, 2026, O3 Mini leads Claude 3.5 Sonnet in Reasoning at #133 against #136.
Science: As of Oct 14, 2026, O3 Mini leads Claude 3.5 Sonnet in Science at #76 against #119.
Long context: As of Oct 14, 2026, Claude 3.5 Sonnet leads O3 Mini in Long context at #126 against #145.
Claude 3.5 Sonnet or O3 Mini?
As of Oct 14, 2026, Claude 3.5 Sonnet leads O3 Mini in 1 of 4 shared categories: Long context.
Claude 3.5 Sonnet or O3 Mini for General LLM?
As of Oct 14, 2026, O3 Mini leads Claude 3.5 Sonnet in General LLM at #7 against #140.
Claude 3.5 Sonnet or O3 Mini for Reasoning?
As of Oct 14, 2026, O3 Mini leads Claude 3.5 Sonnet in Reasoning at #133 against #136.
Claude 3.5 Sonnet or O3 Mini for Science?
As of Oct 14, 2026, O3 Mini leads Claude 3.5 Sonnet in Science at #76 against #119.