Claude 3 Opus vs Claude Sonnet 4.5
As of Oct 15, 2026, Claude 3 Opus leads Claude Sonnet 4.5 in 1 of 2 shared categories: General LLM.
Claude 3 Opus
#11 Best recorded rank: #11 in General LLM, as of Oct 15, 2026.
Claude Sonnet 4.5
It used to be. Was SOTA in General LLM.
| Category | Claude 3 Opus | Claude Sonnet 4.5 |
|---|---|---|
| General LLM | #11 · #11 in General LLM Margin — LMArena leaderboard dataset · Sep 27, 2024 | #62 · Was SOTA · General LLM Margin 32.97872340425532 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 7, 2024 | #51 · Was SOTA · Reasoning Margin 27.65957446808511 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | — | #25 · #25 in Math Margin 53.333333333333336 Epoch AI benchmarking hub · Sep 29, 2025 |
| Science | #138 · #138 in Science Margin — Epoch AI benchmarking hub · Feb 29, 2024 | #82 · #82 in Science Margin — Epoch AI benchmarking hub · Sep 29, 2025 |
| Coding | — | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | — | #86 · Was SOTA · Coding › Web dev Margin 68 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | — | #34 · Was SOTA · Long context Margin 18.085106382978722 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 | #61 · #61 in Factuality Margin 36.04651162790697 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #66 · #66 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 29, 2025 |
Claude 3 Opus: price per 1M tokens is unset in the catalog.
Claude Sonnet 4.5: $6 per 1M blended tokens.
Claude 3 Opus: closed weights.
Claude Sonnet 4.5: closed weights.
General LLM: As of Oct 15, 2026, Claude 3 Opus leads Claude Sonnet 4.5 in General LLM at #11 against #62.
Science: As of Oct 15, 2026, Claude Sonnet 4.5 leads Claude 3 Opus in Science at #82 against #138.
Claude 3 Opus · Claude Sonnet 4.5
Claude 3 Opus or Claude Sonnet 4.5?
As of Oct 15, 2026, Claude 3 Opus leads Claude Sonnet 4.5 in 1 of 2 shared categories: General LLM.
Claude 3 Opus or Claude Sonnet 4.5 for General LLM?
As of Oct 15, 2026, Claude 3 Opus leads Claude Sonnet 4.5 in General LLM at #11 against #62.
Claude 3 Opus or Claude Sonnet 4.5 for Science?
As of Oct 15, 2026, Claude Sonnet 4.5 leads Claude 3 Opus in Science at #82 against #138.