Claude Haiku 4.5 vs Claude Opus 4.6
As of Oct 14, 2026, Claude Haiku 4.5 leads Claude Opus 4.6 in 0 of 6 shared categories.
Claude Haiku 4.5
#78 Best recorded rank: #78 in Abstraction (ARC), as of Oct 14, 2026.
Claude Opus 4.6
Close. Near-SOTA in Reasoning, rank #2.
| Category | Claude Haiku 4.5 | Claude Opus 4.6 |
|---|---|---|
| General LLM | #104 · #104 in General LLM Margin 70.74829931972789 LMArena leaderboard dataset · Oct 13, 2026 | #4 · Near-SOTA · General LLM Margin 2.7210884353741562 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #91 · #91 in Reasoning Margin 63.013698630136986 LMArena leaderboard dataset · Oct 13, 2026 | #2 · Near-SOTA · Reasoning Margin 2.0547945205479436 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #11 · #11 in Math Margin 22.22222222222223 Epoch AI benchmarking hub · Feb 5, 2026 |
| Science | #109 · #109 in Science Margin — Epoch AI benchmarking hub · Oct 15, 2025 | #32 · #32 in Science Margin — Epoch AI benchmarking hub · Feb 5, 2026 |
| Coding | #— · Not enough data Margin — Scale Labs leaderboards · Oct 14, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Feb 5, 2026 |
| Coding › Web dev | #92 · #92 in Coding › Web dev Margin 85.04672897196262 LMArena leaderboard dataset · Oct 13, 2026 | #35 · Was SOTA · Coding › Web dev Margin 31.775700934579433 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #84 · #84 in Long context Margin 57.142857142857146 LMArena leaderboard dataset · Oct 13, 2026 | #2 · Near-SOTA · Long context Margin 0.6802721088435391 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | — | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #97 · #97 in Factuality Margin 73.13432835820896 LMArena leaderboard dataset · Oct 13, 2026 | #3 · Near-SOTA · Factuality Margin 2.9850746268656536 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #78 · #78 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Oct 15, 2025 | — |
Claude Haiku 4.5: $2.0000000000000004 per 1M blended tokens.
Claude Opus 4.6: $10 per 1M blended tokens.
Claude Haiku 4.5: closed weights.
Claude Opus 4.6: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Haiku 4.5 in General LLM at #4 against #104.
Reasoning: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Haiku 4.5 in Reasoning at #2 against #91.
Science: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Haiku 4.5 in Science at #32 against #109.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Haiku 4.5 in Coding › Web dev at #35 against #92.
Long context: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Haiku 4.5 in Long context at #2 against #84.
Factuality: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Haiku 4.5 in Factuality at #3 against #97.
Claude Haiku 4.5 · Claude Opus 4.6
Claude Haiku 4.5 or Claude Opus 4.6?
As of Oct 14, 2026, Claude Haiku 4.5 leads Claude Opus 4.6 in 0 of 6 shared categories.
Claude Haiku 4.5 or Claude Opus 4.6 for General LLM?
As of Oct 14, 2026, Claude Opus 4.6 leads Claude Haiku 4.5 in General LLM at #4 against #104.
Claude Haiku 4.5 or Claude Opus 4.6 for Reasoning?
As of Oct 14, 2026, Claude Opus 4.6 leads Claude Haiku 4.5 in Reasoning at #2 against #91.
Claude Haiku 4.5 or Claude Opus 4.6 for Science?
As of Oct 14, 2026, Claude Opus 4.6 leads Claude Haiku 4.5 in Science at #32 against #109.