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Susana Ferreira
9390e51422
## Description Prices in `ai_model_prices` come from two places: the price book embedded in each Coder release, and prices set through the experimental CLI (https://github.com/coder/coder/pull/27926). Until now, they were indistinguishable, so the startup seeder re-applied the book over every row, and a price someone set would silently revert on the next restart. This adds a `source` column with values `default` and `custom`, and keeps a row for each. Readers resolve a model to its custom price when one exists and fall back to the book, including the cost path that prices an interception. Keeping both rows means the price book stays current underneath an override, so a future delete can restore it. Note: the endpoint still only accepts models the price book does not cover. Overriding a price the book already carries is handled by the follow-up issue https://linear.app/codercom/issue/AIGOV-594. ## Changes - Add a migration for the `ai_model_price_source` enum and a `source` column, backfilled to `default` and then `NOT NULL`. `source` joins the primary key, so a model can hold one row per source. - Take a `source` parameter on `UpsertAIModelPrices`. Each source keeps its own row, so the price book and a custom price never overwrite each other. - Resolve to the custom price in `GetAIModelPriceByProviderModel` and `GetAIModelPrices`, so both the interception cost snapshot and the list endpoint use it. - Seed the price book as `default`, and write prices set through the endpoint as `custom`. Closes https://linear.app/codercom/issue/AIGOV-592 > [!NOTE] > Initially generated by Claude Opus 5, modified and reviewed by @ssncferreira