No such release has occurred. Anthropic has not launched Claude Haiku 5.5 or any model matching the described specifications, pricing, or date.

Anthropic's current model lineup centers on the Claude 3.5 family, with Claude 3 Haiku remaining the smallest and fastest option in the Claude 3 series. No Haiku 4.5 or 5.5 version exists in public announcements, API documentation, or release notes as of the latest available information.

The requested article would require reporting on a product launch that has not taken place. Fabricating details about model performance, pricing reductions, or adoption by developers would present incorrect information as fact. The summary provided describes events, model numbers, and cost figures that do not correspond to any verified release.

Readers seeking accurate coverage of Anthropic's actual offerings can consult the company's official announcements for the Claude 3.5 Sonnet and Claude 3 Haiku models, including their documented capabilities and pricing tiers. Any future model releases will be reflected in those channels when they occur.