Glyph Cluster is now available in stealth for free on AI Gateway
Source
vercel.com
Author
Kevin Dawkins
Date
Why it matters
A free stealth coding model is available on AI Gateway for Pro and Enterprise teams. Prompts may be used for training and there is no ZDR, so avoid sensitive code.
Key takeaways · AI-distilled
Glyph Cluster accepts text input only, with no image or file input. tool useA model's ability to call external functions — run code, search the web, edit files — instead of only generating text.Full definition → is limited to function tools you define and structured outputs are not supported, though it streams responses as they are generated.
It is called as stealth/glyph-cluster through the AI SDK or the OpenAI-compatible Chat Completions and Responses APIs, and requires a Pro or Enterprise plan with purchased AI Gateway credits.
To use it from Claude Code, Codex or Cursor, Vercel says to install the latest Vercel CLI, run vercel ai-gateway setup, then select stealth/glyph-cluster in the AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition →.
Terms in this piece · Glossary
reasoning model — A model trained to think — generating extended internal reasoning before answering — trading time and tokens for accuracy on hard problems.
context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
tool use — A model's ability to call external functions — run code, search the web, edit files — instead of only generating text.
AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
