Claude Haiku 3
AnnouncementCompact, low-latency Claude 3 Haiku announced.
Announcement only; availability forthcoming.
Anthropic · Claude Haiku version history
Dates refer to release events, not our crawl or news publication times. Announcement, preview and availability can happen on different days. This is a curated record, not an exhaustive catalogue or a guarantee of the latest version.
Named Haiku releases and distinct announcements checked against official launch and API release notes through October 1, 2026. Numerical gaps are not filled. Availability describes launch-day access, not current support; older models may be retired.
Sources checked through
Direction: oldest → newest · Earliest documented event · Most recent documented event
Claude Haiku 3
Release (see availability)First Haiku released with image understanding and fast responses.
API, Claude Pro and Bedrock; Vertex AI forthcoming.
Official sources
Link to this eventClaude Haiku 3.5
AnnouncementNext Haiku announced with improved coding and tools.
Not available that day; October 22 is not the API release date.
Official sources
Link to this eventClaude Haiku 3.5
Release (see availability)Claude 3.5 Haiku became available on the API.
Initially text-only; vision followed later. Model ID suffix 20241022 is a snapshot date.
Official sources
Link to this eventClaude Haiku 4.5
Release (see availability)Small hybrid-reasoning model for fast, cost-efficient coding and agents.
Claude apps, Claude Code, API, Bedrock and Vertex AI.
Official sources
Link to this eventClaude Haiku 5.5
AnnouncementUpcoming Haiku in the Claude 5.5 family announced.
Still forthcoming as of October 1, without verified release date or public model ID; September 28 reiterates coming soon.
Official sources
Link to this event