Claude Haiku 5.5 vs Claude Sonnet 5.5
As of Oct 14, 2026, Claude Haiku 5.5 leads Claude Sonnet 5.5 in 0 of 3 shared categories.
Claude Haiku 5.5
Yes. Yes on Math (best per dollar). Not the overall leader.
Claude Sonnet 5.5
Yes. SOTA in co-SOTA in Coding, co-SOTA in Coding › Agentic and co-SOTA in Vision.
| Category | Claude Haiku 5.5 | Claude Sonnet 5.5 |
|---|---|---|
| General LLM | — | #27 · #27 in General LLM Margin 18.367346938775512 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | — | #18 · #18 in Reasoning Margin 13.013698630136986 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #13 · #13 in Math Margin 26.66666666666667 Epoch AI benchmarking hub · Oct 7, 2026 | #4 · #4 in Math Margin 6.666666666666671 Epoch AI benchmarking hub · Sep 28, 2026 |
| Science | #38 · #38 in Science Margin — Epoch AI benchmarking hub · Oct 7, 2026 | #3 · #3 in Science Margin — Epoch AI benchmarking hub · Sep 28, 2026 |
| Coding | #— · Not enough data Margin — Scale Labs leaderboards · Oct 14, 2026 | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | — | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #26 · #26 in Coding › Web dev Margin 23.364485981308405 LMArena leaderboard dataset · Oct 13, 2026 | #3 · Near-SOTA · Coding › Web dev Margin 1.8691588785046775 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | — | #11 · #11 in Long context Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | — | #1 · Co-SOTA · Vision Margin 0 Epoch AI benchmarking hub · Sep 28, 2026 |
| Factuality | — | #16 · #16 in Factuality Margin 12.68656716417911 LMArena leaderboard dataset · Oct 13, 2026 |
Claude Haiku 5.5: $0.19999999999999998 per 1M blended tokens.
Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.
Claude Haiku 5.5: closed weights.
Claude Sonnet 5.5: closed weights.
Math: As of Oct 14, 2026, Claude Sonnet 5.5 leads Claude Haiku 5.5 in Math at #4 against #13.
Science: As of Oct 14, 2026, Claude Sonnet 5.5 leads Claude Haiku 5.5 in Science at #3 against #38.
Coding › Web dev: As of Oct 14, 2026, Claude Sonnet 5.5 leads Claude Haiku 5.5 in Coding › Web dev at #3 against #26.
Claude Haiku 5.5 · Claude Sonnet 5.5
Claude Haiku 5.5 or Claude Sonnet 5.5?
As of Oct 14, 2026, Claude Haiku 5.5 leads Claude Sonnet 5.5 in 0 of 3 shared categories.
Claude Haiku 5.5 or Claude Sonnet 5.5 for Math?
As of Oct 14, 2026, Claude Sonnet 5.5 leads Claude Haiku 5.5 in Math at #4 against #13.
Claude Haiku 5.5 or Claude Sonnet 5.5 for Science?
As of Oct 14, 2026, Claude Sonnet 5.5 leads Claude Haiku 5.5 in Science at #3 against #38.
Claude Haiku 5.5 or Claude Sonnet 5.5 for Coding › Web dev?
As of Oct 14, 2026, Claude Sonnet 5.5 leads Claude Haiku 5.5 in Coding › Web dev at #3 against #26.