Partnership Provisional 86% confidence first seen
Replit’s CEO said the company is no longer working with Anthropic and is adjusting its AI model strategy for its browser-based coding platform. The company plans to use OpenAI’s ChatGPT as the platform default for its Replit Agent, while still allowing customers to choose Anthropic models, with Anthropic usage expected to decline.
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TLDRocket
17 October 2026
Replit’s break with Anthropic is the day’s clearest signal that “model preference” is becoming a business metric, not a philosophical stance. CEO Amjad Masad says Replit is ending its partnership and will default to OpenAI’s ChatGPT for Replit Agent, while still letting enterprises pick Anthropic models. Even more telling: enterprise revenue rose from 2% last year to 15% this year, and Masad frames ChatGPT as the easiest path to scaling that customer mix. At the same time, Anthropic is reporting its own internal shift—Claude-based agents took over more day-to-day work, and junior hiring fell sharply, with the share of junior staff among new technical hires dropping from 27% to 9%.
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