Heroku AI now supports Claude 4.5 Haiku and Claude 4.5 Sonnet models
Change effective on 23 October 2025
Heroku’s Managed Inference and Agents add-on now supports Anthropic’s Claude 4.5 Haiku and Claude 4.5 Sonnet models. Claude 4.5 Haiku and Claude 4.5 Sonnet support conversational chat, tool-calling, and enhanced reasoning for complex tasks with extended thinking.
You can use Claude 4.5 Haiku for a variety of common use cases, including rapid responses, content moderation, and inventory management. Claude 4.5 Sonnet is optimized for enterprise apps and ideal for complex tasks like data processing, sales forecasting, and nuanced content generation.
To learn more about using these models on Heroku, see our documentation for Claude 4.5 Haiku and Claude 4.5 Sonnet.