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Custom Models (BYOM — bring your own model) are workspace-defined endpoints for models outside the Phinite catalog — OpenAI-compatible, Azure, Anthropic, Bedrock, or Vertex. Configure API compatibility, deployment name, credentials, and capabilities here. Saved models appear in Graph Studio when you turn on Bring your Own(Custom) and choose Bring your own Model.
Custom Models workspace page

Custom Models — workspace BYOM list

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Where in the product

Custom Models are distinct from Model Keys (BYOK provider keys for catalog models). Models hub shows both: Custom Models + Model Keys.

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Add a custom model

  1. Open BUILD → Models → Custom Models.
  2. Add a model (provider compatibility, endpoint, deployment name, credentials, capabilities).
  3. Save — the model appears in the workspace list.
  4. In Graph Studio, open an agent node Details tab and open Change model.
  5. Enable Bring your Own(Custom), select Bring your own Model, pick the model (or + Add New Model), then Done.
  6. Save the Agent Graph before Build.
Change model modal with Bring your Own Custom and Bring your own Model

Change model — Bring your own Model selected

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Public Agent Card restriction

Agent Graphs that use a BYOM model cannot be published as a public Agent Card. Replace the BYOM model with a supported catalog (or Phinite-managed) model before publishing publicly.
This Agent Graph cannot be published as a Public Agent Card while it uses a BYOM model. Swap to a supported model first.

Models hub

Custom Models and Model Keys together.

Expose as A2A

Agent Card publish path and visibility.