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Claude Sonnet 5.5

Announced Released
Original sources1

The update, in brief

Sonnet 5.5 targets everyday coding, bug fixes and document creation.

What’s new

  • API model ID: claude-sonnet-5-5

Availability details

Available across Claude platforms. Haiku 5.5 remains forthcoming in this announcement.

Availability and conditions refer to the original announcement.

Original sources

1

Read the announcement, watch the demo, or hear from the team.

More about this release

Demos, launch pages and discussions explicitly connected to this announcement.

Summarized from the linked sources. Availability refers to the announcement date.

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