Claude Opus 5.5 vs Hy3
As of Oct 15, 2026, Claude Opus 5.5 leads Hy3 in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 5.5
Yes. SOTA in Reasoning (tied), Coding (tied), Coding › Agentic (tied), Coding › Web dev, Long context (tied), and Factuality (tied).
Hy3
Yes. Yes on General LLM (best per dollar); Reasoning (best per dollar). Not the overall leader.
| Category | Claude Opus 5.5 | Hy3 |
|---|---|---|
| General LLM | #2 · Near-SOTA · General LLM Margin 1.0638297872340416 LMArena leaderboard dataset · Oct 13, 2026 | #65 · #65 in General LLM Margin 34.57446808510639 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #1 · Co-SOTA · Reasoning Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #66 · #66 in Reasoning Margin 35.63829787234043 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 | #31 · #31 in Science Margin — Epoch AI benchmarking hub · Sep 22, 2026 | — |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #1 · SOTA · Coding › Web dev Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #51 · #51 in Coding › Web dev Margin 40 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #1 · Co-SOTA · Long context Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #64 · #64 in Long context Margin 34.04255319148936 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #4 · Near-SOTA · Vision Margin 13.15789473684211 Epoch AI benchmarking hub · Sep 22, 2026 | — |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #74 · #74 in Factuality Margin 43.604651162790695 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 | — |
Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.
Hy3: $0.23099999999999998 per 1M blended tokens.
Claude Opus 5.5: closed weights.
Hy3: open weights.
General LLM: As of Oct 15, 2026, Claude Opus 5.5 leads Hy3 in General LLM at #2 against #65.
Reasoning: As of Oct 15, 2026, Claude Opus 5.5 leads Hy3 in Reasoning at #1 against #66.
Coding › Web dev: As of Oct 15, 2026, Claude Opus 5.5 leads Hy3 in Coding › Web dev at #1 against #51.
Long context: As of Oct 15, 2026, Claude Opus 5.5 leads Hy3 in Long context at #1 against #64.
Factuality: As of Oct 15, 2026, Claude Opus 5.5 leads Hy3 in Factuality at #1 against #74.
Claude Opus 5.5 or Hy3?
As of Oct 15, 2026, Claude Opus 5.5 leads Hy3 in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 5.5 or Hy3 for General LLM?
As of Oct 15, 2026, Claude Opus 5.5 leads Hy3 in General LLM at #2 against #65.
Claude Opus 5.5 or Hy3 for Reasoning?
As of Oct 15, 2026, Claude Opus 5.5 leads Hy3 in Reasoning at #1 against #66.
Claude Opus 5.5 or Hy3 for Coding › Web dev?
As of Oct 15, 2026, Claude Opus 5.5 leads Hy3 in Coding › Web dev at #1 against #51.