Claude 3 Opus vs Claude Opus 4.5
As of Oct 14, 2026, Claude 3 Opus leads Claude Opus 4.5 in 1 of 2 shared categories: General LLM.
Claude 3 Opus
#9 Best recorded rank: #9 in General LLM, as of Oct 14, 2026.
Claude Opus 4.5
It used to be. Was SOTA in Reasoning.
| Category | Claude 3 Opus | Claude Opus 4.5 |
|---|---|---|
| General LLM | #9 · #9 in General LLM Margin — LMArena leaderboard dataset · Sep 27, 2024 | #33 · #33 in General LLM Margin 22.448979591836732 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 7, 2024 | #28 · Was SOTA · Reasoning Margin 19.86301369863014 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | — | #16 · #16 in Math Margin 33.33333333333333 Epoch AI benchmarking hub · Nov 24, 2025 |
| Science | #138 · #138 in Science Margin — Epoch AI benchmarking hub · Feb 29, 2024 | #68 · #68 in Science Margin — Epoch AI benchmarking hub · Nov 24, 2025 |
| Coding | — | #— · Not enough data Margin — Epoch AI benchmarking hub · Nov 24, 2025 |
| Coding › Web dev | — | #53 · Was SOTA · Coding › Web dev Margin 48.598130841121495 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | — | #19 · Was SOTA · Long context Margin 12.925170068027214 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 | #36 · #36 in Factuality Margin 27.611940298507463 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #49 · #49 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Nov 24, 2025 |
Claude 3 Opus: price per 1M tokens is unset in the catalog.
Claude Opus 4.5: $10 per 1M blended tokens.
Claude 3 Opus: closed weights.
Claude Opus 4.5: closed weights.
General LLM: As of Oct 14, 2026, Claude 3 Opus leads Claude Opus 4.5 in General LLM at #9 against #33.
Science: As of Oct 14, 2026, Claude Opus 4.5 leads Claude 3 Opus in Science at #68 against #138.
Claude 3 Opus · Claude Opus 4.5
Claude 3 Opus or Claude Opus 4.5?
As of Oct 14, 2026, Claude 3 Opus leads Claude Opus 4.5 in 1 of 2 shared categories: General LLM.
Claude 3 Opus or Claude Opus 4.5 for General LLM?
As of Oct 14, 2026, Claude 3 Opus leads Claude Opus 4.5 in General LLM at #9 against #33.
Claude 3 Opus or Claude Opus 4.5 for Science?
As of Oct 14, 2026, Claude Opus 4.5 leads Claude 3 Opus in Science at #68 against #138.