List Models

List the curated standard, ungated model catalog and the caller's actual spreadsheet submission default. This is not every accepted runtime model: administrator-added, gated, experimental, and custom models are excluded for all callers. Product picker preferences (including APAC) do not change this Platform API catalog. The caller's organization model availability policy removes model families it turned off; when it turns off the standard submission default's family, the organization's effective default (its default model when available, otherwise the product default, otherwise the first available model) becomes the submission default. Pass a returned id as model in POST /api/spreadsheets. Supported thinking levels are not included; the submit schema documents accepted thinking values.