Editorial illustration for Replit Ends Anthropic Partnership Over Cost and Performance
Replit Ends Anthropic Partnership Over Costs
Amjad Masad stood onstage at TechCrunch Disrupt on Thursday and dropped a line that caught a lot of people off guard. Replit, he said, has stopped working with Anthropic. The two companies had been tied together for a while: Replit's cloud-based coding platform ran on Claude models, and that arrangement reportedly helped push the company's revenue up by a wide margin. Then in August, Replit announced a new partnership with OpenAI, without saying anything about cutting ties with Anthropic.
The timing matters. Replit has built a loyal following among startup founders and developers who use its browser-based tools to build and ship apps without leaving the platform. Swapping out the AI model running underneath that product isn't a small technical tweak, it's a bet on which lab builds better coding tools going forward.
Masad framed his decision as practical, pointing to cost and performance as the deciding factors. But the move raises questions about what actually changed behind the scenes, and whether the break with Anthropic is as clean as Masad made it sound from the stage.
Replit, the AI coding platform that has become a favorite of startup founders and developers, is no longer working with Anthropic, the company’s CEO and co-founder Amjad Masad said Thursday while onstage at TechCrunch Disrupt.
Why this matters
For founders building on AI coding tools, this is a reminder that model partnerships are not marriages. Replit switched horses after Anthropic's Claude models reportedly lost ground on cost and benchmark performance against OpenAI's offerings, and Masad made that switch publicly, on stage, without hedging. If a platform with Replit's visibility can drop a flagship partner in a matter of months, any startup wiring its product tightly to one model provider should treat that choice as temporary infrastructure, not a permanent bet.
It also says something about where the competitive pressure actually sits right now: not just raw capability, but price per token and benchmark performance on narrow, practical tasks like "vibe-coded applications from scratch." That's a much more mercenary calculus than the usual talk of model quality, and it's the one that will keep reshuffling these deals.
Watch what Anthropic does next. Losing a visible developer-tool partner to OpenAI is the kind of signal that tends to show up in pricing changes or a sudden round of benchmark claims within weeks, not quarters.
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Common Questions Answered
Why did Replit end its partnership with Anthropic?
Replit ended its partnership with Anthropic because Claude models reportedly lost ground on cost and benchmark performance compared to OpenAI's offerings. CEO Amjad Masad announced the decision publicly at TechCrunch Disrupt, indicating that performance and pricing factors were the primary drivers behind the switch to OpenAI.
How did Replit's revenue change while using Anthropic's Claude models?
Replit's revenue reportedly increased significantly while the company was using Anthropic's Claude models on its cloud-based coding platform. However, the partnership was ultimately discontinued when OpenAI's models demonstrated better cost and performance metrics.
When did Replit announce its partnership with OpenAI?
Replit announced its new partnership with OpenAI in August, though the company did not publicly disclose at that time that it was ending its relationship with Anthropic. The official announcement about ending the Anthropic partnership came later when CEO Amjad Masad spoke at TechCrunch Disrupt on Thursday.
What does Replit's switch from Anthropic to OpenAI mean for startups relying on AI model providers?
Replit's decision to switch from Anthropic to OpenAI demonstrates that partnerships with AI model providers are not permanent arrangements and can change based on cost and performance considerations. This serves as a cautionary reminder for startups that tightly integrate their products with a single model provider, as they should be prepared for potential changes in partnerships.
Further Reading
- Replit is no longer working with Anthropic, CEO says - TechCrunch
- Replit is no longer working with Anthropic, CEO says - Mezha
- Replit's CEO says the future of work is the 'self-driving company' - TechCrunch
- Amjad Masad, CEO and co-founder of Replit, joins the Disrupt stage at TechCrunch Disrupt 2026 - TechCrunch
- The 6 Best Replit Alternatives in 2026 - Zapier
