Replit Shifts AI Strategy, Ending Anthropic Partnership

Masad cited a combination of cost efficiency and model performance as the primary drivers for the change. While Replit recently announced a new partnership with OpenAI in August, Masad noted that internal benchmarks now favor OpenAI’s models for building applications from scratch. Despite this public declaration, the transition remains muddled; sources familiar with the matter suggested the partnership may still be active, and company documentation from September explicitly referenced Anthropic’s Claude 3.5 Sonnet and 3.5 Haiku models running within the Replit Agent environment.

Beyond the infrastructure shuffle, Masad highlighted a broader shift in the company’s business model. Enterprise contracts have surged to represent 15% of total revenue this year, up from just 2% in 2025, with B2B services now accounting for over half of the platform's intake. As Replit scales, Masad emphasized that the future of development lies in creating secure, orchestrated 'habitats' for AI agents, prioritizing sandboxing and identity authorization to ensure safe deployment.