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* Adds support for `NativeOutput` via a new `NativeOutput` dataclass * Adds support for structured output specification via the following (pydantic models already supported) * dataclasses * typed dicts * json schemas * Adds mocking support to support native strategies with `FakeToolCallingModel` * Add new default tool message when `tool_message_content` not provided * Smart "selection" of native vs tool output based on provider support, necessitates profiles down the line Considered questions * do we want to enforce docstrings? -- decided on no for now * do we want to enforce names (titles) on json schemas? -- decided no for now, defaulting to `structured_output` * do we want to validate that json schemas coming in are valid? -- decided no for now * do we want to validate model results against a given json schema? we validate against all other types (typed dict, dataclass, etc) w/ pydantic -- decided no for now TODO in future PRs: * Figure out retry policy * Add standard testing (handed off to @casparb) * Further privatize certain structures (like the bindings) -- this is low prio --------- Co-authored-by: Sydney Runkle <sydneymarierunkle@gmail.com> Co-authored-by: Sydney Runkle <54324534+sydney-runkle@users.noreply.github.com>