GitHub Models is now retired
Simon Willison’s Weblog Simon Willison
GitHub shut down GitHub Models, and Simon Willison only noticed when a GitHub Actions job broke. The handy part was free-ish API access inside Actions; now it’s gone, which says a lot about token costs.
Based on reporting by Simon Willison’s Weblog, Simon Willison — read the original for the full story.
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GitHub Models has been retired, and Simon Willison only spotted it when a GitHub Actions run in his simonw/research repository failed. The error said GitHub Models was temporarily unavailable because of a scheduled retirement brownout. By the time he saw it, that warning was already out of date: the retirement was finished.
The product was a strange but useful hybrid. GitHub offered a model playground and a single API that sat in front of several LLM providers. The real appeal was practical: code running in GitHub Actions could lean on the GitHub API key already available in that environment, which made prompt calls easy to wire up.
That setup lined up neatly with GitHub Next’s idea of Continuous AI. It also made it easy to build workflows that lived inside GitHub rather than somewhere else, with less friction than juggling separate credentials for every provider.
GitHub didn’t explain why it shut the service down. Willison suspects the economics got ugly once coding-agent-style usage started pushing token costs too high for a free or subsidized offering. He had been using GitHub Models for folder summaries in a README workflow, and has now switched that job to an OpenAI API key with a monthly spending limit, generating the summaries with GPT-5.6 Luna.
My take — AI-written commentary, not fact-checked reporting
This is the familiar story: the neat free layer disappears the moment real usage shows up. Vendors love “easy” developer access right up until agents start doing what developers said they’d do. The lesson isn’t subtle—if the API key is the product, the bill always arrives eventually.
Read more about this at: Simon Willison’s Weblog