The newest Claude Haiku model is Claude Haiku 5.5, released on October 7, 2026. It shipped 17 days ago, and the line's usual gap is about 345 days.
How long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.
Latest: Claude Haiku 5.5 · Oct 7, 2026
Every Monday, only when something shipped: the AI models that came out, what each one changed, and which lines are due next.
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Newest first — what each version changed versus the one before, in Anthropic's own numbers.
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
The smallest Claude 3 model, with image input, available in the API from its launch day.