Claude Opus 4.5 20251101 vs Claude Opus 5
As of Oct 14, 2026, Claude Opus 4.5 20251101 leads Claude Opus 5 in 0 of 2 shared categories.
Claude Opus 4.5 20251101
#27 Best recorded rank: #27 in Abstraction (ARC), as of Oct 14, 2026.
Claude Opus 5
Close. Near-SOTA in Factuality, rank #4.
| Category | Claude Opus 4.5 20251101 | Claude Opus 5 |
|---|---|---|
| General LLM | — | #11 · Was SOTA · General LLM Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #— · Not enough data Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #9 · Was SOTA · Reasoning Margin 6.849315068493155 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | — | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #55 · #55 in Science Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 |
| Coding | — | #4 · #4 in Coding Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | — | #4 · #4 in Coding › Agentic Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | — | #6 · Was SOTA · Coding › Web dev Margin 4.672897196261687 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | — | #9 · Was SOTA · Long context Margin 6.122448979591837 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | — | #12 · #12 in Vision Margin 36.8421052631579 Epoch AI benchmarking hub · Jul 24, 2026 |
| Factuality | #— · Not enough data Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #4 · Near-SOTA · Factuality Margin 3.731343283582092 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #27 · #27 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 |
Claude Opus 4.5 20251101: price per 1M tokens is unset in the catalog.
Claude Opus 5: $10 per 1M blended tokens.
Claude Opus 4.5 20251101: closed weights.
Claude Opus 5: closed weights.
Science: As of Oct 14, 2026, Claude Opus 5 leads Claude Opus 4.5 20251101 in Science at #12 against #55.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5 leads Claude Opus 4.5 20251101 in Abstraction (ARC) at #3 against #27.
Claude Opus 4.5 20251101 · Claude Opus 5
Claude Opus 4.5 20251101 or Claude Opus 5?
As of Oct 14, 2026, Claude Opus 4.5 20251101 leads Claude Opus 5 in 0 of 2 shared categories.
Claude Opus 4.5 20251101 or Claude Opus 5 for Science?
As of Oct 14, 2026, Claude Opus 5 leads Claude Opus 4.5 20251101 in Science at #12 against #55.
Claude Opus 4.5 20251101 or Claude Opus 5 for Abstraction (ARC)?
As of Oct 14, 2026, Claude Opus 5 leads Claude Opus 4.5 20251101 in Abstraction (ARC) at #3 against #27.