Anthropic

Claude Haiku

Anthropic's fastest, most compact Claude tier, aimed at high-volume and latency-sensitive use. Smaller models trade some robustness for speed.

Strengths

Low latency and cost; solid instruction-following for routine tasks.

Known weaknesses

More exposed to the reasoning, counting and format-constraint classes as task complexity grows; long-context recall and multi-step reasoning are weaker than the larger tiers.

Findings (0)

No findings linked to this model's versions yet.

Versions tracked

claude-haiku-4-5-20251001

Cite this

Qlarify Labs. (2026). Anthropic Claude Haiku — known weaknesses. Retrieved from https://labs.qlarify.fi/models/claude-haiku