release: 3.19.0 (#3938)

Automated Release PR
---


##
[3.19.0](https://github.com/openai/openai-python/compare/v3.18.0...v3.19.0)
(2026-09-22)


### Features

* **api:** add GCP external storage support
([#3943](https://github.com/openai/openai-python/issues/3943))
([d12d60f](https://github.com/openai/openai-python/commit/d12d60fff9f5624f2dc50ade3d832028f4fecaa7))
* **api:** add GPT-Rosalind research model
([#3940](https://github.com/openai/openai-python/issues/3940))
([d041d73](https://github.com/openai/openai-python/commit/d041d736f75f03f6c87aa77f932823011691bac5))


### Bug Fixes

* **_utils/_transform:** propagate __api_exclude__ in
_async_transform_recursive
([#3324](https://github.com/openai/openai-python/issues/3324))
([161ae65](https://github.com/openai/openai-python/commit/161ae65ea676a000a156ba0dacfd904532b52473))
* **api:** handle omission markers in queued WebSocket events
([#3944](https://github.com/openai/openai-python/issues/3944))
([63e4616](https://github.com/openai/openai-python/commit/63e46169a7c6525ec90c7f2815a05d56e795cbcf))
* **client:** retry only replayable request content
([#3771](https://github.com/openai/openai-python/issues/3771))
([6e0c2be](https://github.com/openai/openai-python/commit/6e0c2beeb639e42ff74f14135151d8bcb1e5b245))
* **client:** tolerate older optional aiohttp installations
([#3941](https://github.com/openai/openai-python/issues/3941))
([0d91efb](https://github.com/openai/openai-python/commit/0d91efbe5084c2f572688e8e9a05c0a91c8c0319))
* **helpers:** use asyncio.get_running_loop() inside async methods
([#3289](https://github.com/openai/openai-python/issues/3289))
([bac3545](https://github.com/openai/openai-python/commit/bac3545eee5a0dfd348a6766bca3e904308792dd))

---
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