Claude Haiku 5.5 vs GPT-5.4
As of Oct 15, 2026, Claude Haiku 5.5 leads GPT-5.4 in 1 of 3 shared categories: Coding › Web dev.
Claude Haiku 5.5
Yes. Yes on Math (best per dollar). Not the overall leader.
GPT-5.4
It used to be. Was SOTA in General LLM.
| Category | Claude Haiku 5.5 | GPT-5.4 |
|---|---|---|
| General LLM | — | #30 · Was SOTA · General LLM Margin 15.957446808510639 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | — | #32 · #32 in Reasoning Margin 17.55319148936171 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #13 · #13 in Math Margin 26.66666666666667 Epoch AI benchmarking hub · Oct 7, 2026 | #9 · #9 in Math Margin 17.777777777777757 Epoch AI benchmarking hub · Mar 5, 2026 |
| Science | #38 · #38 in Science Margin — Epoch AI benchmarking hub · Oct 7, 2026 | #16 · #16 in Science Margin — Epoch AI benchmarking hub · Mar 5, 2026 |
| Coding | #— · Not enough data Margin — Scale Labs leaderboards · Oct 14, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #28 · #28 in Coding › Web dev Margin 21.599999999999994 LMArena leaderboard dataset · Oct 13, 2026 | #60 · #60 in Coding › Web dev Margin 47.2 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | — | #40 · #40 in Long context Margin 21.276595744680847 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | — | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | — | #6 · Was SOTA · Factuality Margin 4.0697674418604635 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #10 · #10 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Mar 5, 2026 |
Claude Haiku 5.5: $0.19999999999999998 per 1M blended tokens.
GPT-5.4: $5.625 per 1M blended tokens.
Claude Haiku 5.5: closed weights.
GPT-5.4: closed weights.
Math: As of Oct 15, 2026, GPT-5.4 leads Claude Haiku 5.5 in Math at #9 against #13.
Science: As of Oct 15, 2026, GPT-5.4 leads Claude Haiku 5.5 in Science at #16 against #38.
Coding › Web dev: As of Oct 15, 2026, Claude Haiku 5.5 leads GPT-5.4 in Coding › Web dev at #28 against #60.
Claude Haiku 5.5 or GPT-5.4?
As of Oct 15, 2026, Claude Haiku 5.5 leads GPT-5.4 in 1 of 3 shared categories: Coding › Web dev.
Claude Haiku 5.5 or GPT-5.4 for Math?
As of Oct 15, 2026, GPT-5.4 leads Claude Haiku 5.5 in Math at #9 against #13.
Claude Haiku 5.5 or GPT-5.4 for Science?
As of Oct 15, 2026, GPT-5.4 leads Claude Haiku 5.5 in Science at #16 against #38.
Claude Haiku 5.5 or GPT-5.4 for Coding › Web dev?
As of Oct 15, 2026, Claude Haiku 5.5 leads GPT-5.4 in Coding › Web dev at #28 against #60.