Claude Sonnet 4 vs O3 Mini
As of Oct 15, 2026, Claude Sonnet 4 leads O3 Mini in 2 of 5 shared categories: Reasoning and Long context.
Claude Sonnet 4
#35 Best current rank: #35 in Math, as of Oct 15, 2026.
O3 Mini
It used to be. Was SOTA in Reasoning.
| Category | Claude Sonnet 4 | O3 Mini |
|---|---|---|
| General LLM | #163 · #163 in General LLM Margin 86.70212765957447 LMArena leaderboard dataset · Oct 13, 2026 | #10 · #10 in General LLM Margin — LMArena leaderboard dataset · Apr 16, 2025 |
| Reasoning | #149 · #149 in Reasoning Margin 79.7872340425532 LMArena leaderboard dataset · Oct 13, 2026 | #172 · Was SOTA · Reasoning Margin 92.02127659574468 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #35 · #35 in Math Margin 77.77777777777777 Epoch AI benchmarking hub · May 22, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #97 · #97 in Science Margin — Epoch AI benchmarking hub · May 22, 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 | #123 · #123 in Long context Margin 65.42553191489361 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) | #67 · #67 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 22, 2025 | #51 · #51 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
Claude Sonnet 4: $6 per 1M blended tokens.
O3 Mini: $1.9250000000000003 per 1M blended tokens.
Claude Sonnet 4: closed weights.
O3 Mini: closed weights.
General LLM: As of Oct 15, 2026, O3 Mini leads Claude Sonnet 4 in General LLM at #10 against #163.
Reasoning: As of Oct 15, 2026, Claude Sonnet 4 leads O3 Mini in Reasoning at #149 against #172.
Science: As of Oct 15, 2026, O3 Mini leads Claude Sonnet 4 in Science at #76 against #97.
Long context: As of Oct 15, 2026, Claude Sonnet 4 leads O3 Mini in Long context at #123 against #186.
Abstraction (ARC): As of Oct 15, 2026, O3 Mini leads Claude Sonnet 4 in Abstraction (ARC) at #51 against #67.
Claude Sonnet 4 or O3 Mini?
As of Oct 15, 2026, Claude Sonnet 4 leads O3 Mini in 2 of 5 shared categories: Reasoning and Long context.
Claude Sonnet 4 or O3 Mini for General LLM?
As of Oct 15, 2026, O3 Mini leads Claude Sonnet 4 in General LLM at #10 against #163.
Claude Sonnet 4 or O3 Mini for Reasoning?
As of Oct 15, 2026, Claude Sonnet 4 leads O3 Mini in Reasoning at #149 against #172.
Claude Sonnet 4 or O3 Mini for Science?
As of Oct 15, 2026, O3 Mini leads Claude Sonnet 4 in Science at #76 against #97.