Claude Sonnet 5.5 vs O1 Mini
As of Oct 15, 2026, Claude Sonnet 5.5 leads O1 Mini in 1 of 2 shared categories: Science.
Claude Sonnet 5.5
Yes. SOTA in co-SOTA in Coding, co-SOTA in Coding › Agentic and co-SOTA in Vision.
O1 Mini
It used to be. Was SOTA in Reasoning.
| Category | Claude Sonnet 5.5 | O1 Mini |
|---|---|---|
| General LLM | #27 · #27 in General LLM Margin 18.367346938775512 LMArena leaderboard dataset · Oct 13, 2026 | #11 · #11 in General LLM Margin — LMArena leaderboard dataset · Feb 6, 2025 |
| Reasoning | #18 · #18 in Reasoning Margin 13.013698630136986 LMArena leaderboard dataset · Oct 13, 2026 | #— · Was SOTA · Reasoning Margin — LMArena leaderboard dataset · Mar 11, 2025 |
| Math | #4 · #4 in Math Margin 6.666666666666671 Epoch AI benchmarking hub · Sep 28, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Apr 16, 2025 |
| Science | #3 · #3 in Science Margin — Epoch AI benchmarking hub · Sep 28, 2026 | #106 · #106 in Science Margin — Epoch AI benchmarking hub · Sep 12, 2024 |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Mar 25, 2025 |
| Coding › Agentic | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #3 · Near-SOTA · Coding › Web dev Margin 1.8691588785046775 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #11 · #11 in Long context Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Feb 11, 2025 |
| Vision | #1 · Co-SOTA · Vision Margin 0 Epoch AI benchmarking hub · Sep 28, 2026 | — |
| Factuality | #16 · #16 in Factuality Margin 12.68656716417911 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Abstraction (ARC) | — | #79 · #79 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 12, 2024 |
Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.
O1 Mini: price per 1M tokens is unset in the catalog.
Claude Sonnet 5.5: closed weights.
O1 Mini: closed weights.
General LLM: As of Oct 15, 2026, O1 Mini leads Claude Sonnet 5.5 in General LLM at #11 against #27.
Science: As of Oct 15, 2026, Claude Sonnet 5.5 leads O1 Mini in Science at #3 against #106.
Claude Sonnet 5.5 or O1 Mini?
As of Oct 15, 2026, Claude Sonnet 5.5 leads O1 Mini in 1 of 2 shared categories: Science.
Claude Sonnet 5.5 or O1 Mini for General LLM?
As of Oct 15, 2026, O1 Mini leads Claude Sonnet 5.5 in General LLM at #11 against #27.
Claude Sonnet 5.5 or O1 Mini for Science?
As of Oct 15, 2026, Claude Sonnet 5.5 leads O1 Mini in Science at #3 against #106.