Anthropic · Claude Haiku line · lightweight
Claude Haiku 5.5 was released by Anthropic on October 7, 2026, as a lightweight model in the Claude Haiku line.
Costs a tenth of Claude Haiku 4.5 for prompts under 100K tokens while raising its computer-use score from 15.7% to 72.4%, with a 1M-token context window.
Compared with Claude Haiku 4.5 · the model it replaces
Finishes 7 in 10 tasks when operating a computer on its own
OSWorld 2.1 — completing office tasks on a real computer desktop (offline subset)
72.4%
▲ up from 15.7% · +56.7 points
Scores far higher on the all-round intelligence index
Artificial Analysis Intelligence Index v4.3.2 — one score averaging 10 hard tests
43
▲ up from 17 for Claude Haiku 4.5 (reasoning) · +26 points · Haiku 5.5 measured at max effort
Costs developers a tenth of what Claude Haiku 4.5 cost
Price per 1M tokens — what developers pay, input / output
$0.10 / $0.50
▲ down from $1 / $5 · prompts under 100K tokens; $0.50 / $2.50 above that
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Claude Haiku 5.5 is the current model in this line. The card shows how long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.
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