v6.0.0

6.0.0 (2025-09-30)

Full Changelog: v5.23.2...v6.0.0

⚠ BREAKING CHANGES

• api: ResponseFunctionToolCallOutputItem.output and ResponseCustomToolCallOutput.output now return string | Array<ResponseInputText | ResponseInputImage | ResponseInputFile> instead of string only. This may break existing callsites that assume output is always a string.

Features

• api: Support images and files for function call outputs in responses, BatchUsage (abe56f8)

Chores

• compat with zod v4 (#1658) (94569a0)