Claude Haiku 5.5 (Low) vs Claude Opus 5.5 (Max, Default Fallback)

What the captured data shows

Claude Haiku 5.5 Low and Claude Opus 5.5 have different reported index values and very different listed token rates. Haiku’s captured timing values favor a shorter wait before output begins. Opus has the higher intelligence index. Both records lack individual benchmark results in this dataset.

Which model fits your workflow

Try Haiku Low on bounded tasks whose answers you can check directly. For work that needs the Opus entry’s higher measured aggregate capability, compare the actual outputs before accepting the extra cost. Keep the Opus fallback setting visible when recording a result.

Decision takeaway

The low-cost Haiku entry deserves a task-level trial; the index gap supplies context without proving that every Opus answer will be better.

These figures come from Franklin’s Artificial Analysis-sourced model records captured on 2026-10-11. Read the individual model entries for the data snapshot: Claude Haiku 5.5 (Low) and Claude Opus 5.5 (Max, Default Fallback). Missing measurements remain unavailable; this page does not report a new hands-on test.