Replit makes OpenAI its default model, with Anthropic still selectable

Key points

Replit CEO Amjad Masad said onstage at TechCrunch Disrupt that OpenAI models are now the default in Replit, citing cost, partnership and performance.
Customers can still pick Anthropic models; Masad says Replit stays model agnostic, and an unnamed source told TechCrunch the Anthropic partnership is still in place.
Masad said Replit was until recently a top-five Anthropic customer; most users keep the default model, so Anthropic spend could drop.
Enterprise rose from about 2% of Replit revenue last year to about 15% this year, with over 50% of revenue from B2B.

Why it matters for marketers: If your team builds on Replit, the default model behind Replit Agent has changed, so output quality, cost and behavior may shift unless you pick a model yourself.

Replit CEO and co-founder Amjad Masad said at TechCrunch Disrupt that the AI coding platform is no longer working with Anthropic. He said the move came down to cost, partnership and performance, and that Replit's own internal and public benchmarks favor OpenAI models for building apps from scratch. Replit announced an OpenAI partnership in August.

The picture is less clear-cut than the stage remarks suggested. After the event, Masad said customers can still use Anthropic models on Replit, but OpenAI is now the default and the preferred partner for powering Replit Agent. TechCrunch reported that one unnamed person familiar with the relationship said the partnership remains in place, and that Replit promoted Anthropic's models as recently as late September.

For marketers and content teams, the default matters. Most users never change it, so the model behind Replit Agent, and the quality, speed and cost of what it builds, may change without any action on your side. Teams using Replit for landing pages, internal tools or campaign apps should test outputs and consider choosing a model on purpose.

Masad also said enterprise made up about 2% of revenue last year and about 15% this year, with more than half of revenue from B2B. He expects enterprise and government to account for more than half of revenue in 2027. Watch for any clarification from Replit or Anthropic on the status of their relationship.