Does Chalk use Anthropic?
Probably
We hold good evidence for this, but not the strongest kind.
- The company's privacy policy names it as a processor, controller or partner.
How we know
About Chalk
Chalk provides a platform for production AI with context serving, model and agent runtime, and testing tools. It serves teams building and running AI models and agents.
Summarized from its homepage on 6 Nov 2026.
What else Chalk uses
Chalk has evidence for 25 vendors. The strongest:
Google Workspace
Vercel
Amplitude
Datadog
OpenAI
Amazon Web Services
Google Cloud
Linear
Retool
Slack
Other companies using Anthropic
Check any company's vendors in seconds
See Chalk's full stack with a source for every vendor, and ask the same question about any company from the API, Claude or your browser.
- Every company and vendor, with its public source
- 100 API calls a month, plus MCP and the Chrome extension
- Work email only. No card, no sales call