BYOK and enterprise custom models in the Copilot usage API

From the source

The Copilot usage metrics API now shows bring your own key (BYOK) usage across GitHub Copilot, so you can separate it from Copilot-hosted model usage. Reports cover two kinds of BYOK Local BYOK is configured by developers in their client. Requests go from Copilot CLI or the GitHub Copilot app directly to the developer’s provider key or local model.

Find it in used_local_byok , totals_by_local_byok , and active local BYOK user counts. Enterprise custom models are configured by admins in GitHub settings, and requests route through GitHub to your provider. Find them with is_custom_enterprise_model in totals_by_client .

Both appear in enterprise and organization reports, at the user and aggregate level, in 1-day and 28-day reports. Local BYOK covers a developer’s own provider key and local models served by tools such as Ollama, Foundry Local, LM Studio, and llama-server. used_local_byok : Whether a user made at least one local BYOK request in Copilot CLI or the Copilot app that day. Appears in user-level reports. …

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