Claude Haiku 4.5 vs Claude Opus 5
As of Oct 14, 2026, Claude Haiku 4.5 leads Claude Opus 5 in 0 of 7 shared categories.
Claude Haiku 4.5
#78 Best recorded rank: #78 in Abstraction (ARC), as of Oct 14, 2026.
Claude Opus 5
Close. Near-SOTA in Factuality, rank #4.
| Category | Claude Haiku 4.5 | Claude Opus 5 |
|---|---|---|
| General LLM | #104 · #104 in General LLM Margin 70.74829931972789 LMArena leaderboard dataset · Oct 13, 2026 | #11 · Was SOTA · General LLM Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #91 · #91 in Reasoning Margin 63.013698630136986 LMArena leaderboard dataset · Oct 13, 2026 | #9 · Was SOTA · Reasoning Margin 6.849315068493155 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #109 · #109 in Science Margin — Epoch AI benchmarking hub · Oct 15, 2025 | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 |
| Coding | #— · Not enough data Margin — Scale Labs leaderboards · Oct 14, 2026 | #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 | #92 · #92 in Coding › Web dev Margin 85.04672897196262 LMArena leaderboard dataset · Oct 13, 2026 | #6 · Was SOTA · Coding › Web dev Margin 4.672897196261687 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #84 · #84 in Long context Margin 57.142857142857146 LMArena leaderboard dataset · Oct 13, 2026 | #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 | #97 · #97 in Factuality Margin 73.13432835820896 LMArena leaderboard dataset · Oct 13, 2026 | #4 · Near-SOTA · Factuality Margin 3.731343283582092 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #78 · #78 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Oct 15, 2025 | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 |
Claude Haiku 4.5: $2.0000000000000004 per 1M blended tokens.
Claude Opus 5: $10 per 1M blended tokens.
Claude Haiku 4.5: closed weights.
Claude Opus 5: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 5 leads Claude Haiku 4.5 in General LLM at #11 against #104.
Reasoning: As of Oct 14, 2026, Claude Opus 5 leads Claude Haiku 4.5 in Reasoning at #9 against #91.
Science: As of Oct 14, 2026, Claude Opus 5 leads Claude Haiku 4.5 in Science at #12 against #109.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 5 leads Claude Haiku 4.5 in Coding › Web dev at #6 against #92.
Long context: As of Oct 14, 2026, Claude Opus 5 leads Claude Haiku 4.5 in Long context at #9 against #84.
Factuality: As of Oct 14, 2026, Claude Opus 5 leads Claude Haiku 4.5 in Factuality at #4 against #97.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5 leads Claude Haiku 4.5 in Abstraction (ARC) at #3 against #78.
Claude Haiku 4.5 · Claude Opus 5
Claude Haiku 4.5 or Claude Opus 5?
As of Oct 14, 2026, Claude Haiku 4.5 leads Claude Opus 5 in 0 of 7 shared categories.
Claude Haiku 4.5 or Claude Opus 5 for General LLM?
As of Oct 14, 2026, Claude Opus 5 leads Claude Haiku 4.5 in General LLM at #11 against #104.
Claude Haiku 4.5 or Claude Opus 5 for Reasoning?
As of Oct 14, 2026, Claude Opus 5 leads Claude Haiku 4.5 in Reasoning at #9 against #91.
Claude Haiku 4.5 or Claude Opus 5 for Science?
As of Oct 14, 2026, Claude Opus 5 leads Claude Haiku 4.5 in Science at #12 against #109.