Anthropic acquires Stainless, the dev-tools startup used by OpenAI and Google
The deal folds a shared infrastructure vendor into Anthropic just as independent spending data suggests Claude is pulling ahead of ChatGPT in business accounts.
- Anthropic acquired Stainless, a NYC dev-tools startup used by OpenAI, Google, and Cloudflare.
- Stainless will shut down all hosted products, forcing customers to migrate.
- Independent spending data from Ramp, cited in online discussions, suggests Anthropic passed OpenAI in business adoption in April 2026.