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Different but related: When you use a Codex subscription in an agent like Pi or OpenCode, all the requests and tool call execution go through a sandbox owned by Codex app server, and all the tool calls function somewhat differently, and you can't read files outside of the sandbox as easily. It's currently tripping me up a bit when building a model router.

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> When you use a Codex subscription in an agent like Pi or OpenCode, all the requests and tool call execution go through a sandbox owned by Codex app server

That is not the case. There are some subtle differences between subscription and regular inference API, but not to the degree that behaviors change entirely. In Pi we're doing tests against both API and subscription API regularly to see how they behave.

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