release: 3.4.0 (#3682)

Automated Release PR
---


##
[3.4.0](https://github.com/openai/openai-python/compare/v3.3.1...v3.4.0)
(2026-08-25)


### Features

* **api:** Add obfuscation field to ChatCompletionChunk
([#3690](https://github.com/openai/openai-python/issues/3690))
([c7d8e1d](https://github.com/openai/openai-python/commit/c7d8e1d26be1f958e55c80f26b648f768afabdf2))
* **api:** add project residency configuration and cost quantity units
([#3726](https://github.com/openai/openai-python/issues/3726))
([bc4f8ef](https://github.com/openai/openai-python/commit/bc4f8efdbc1f8fa6b78935e205780e259d83576d))


### Bug Fixes

* **api:** encode Realtime call offers and session configuration
([#3736](https://github.com/openai/openai-python/issues/3736))
([555ac48](https://github.com/openai/openai-python/commit/555ac487f450f24928d859478ea2f41b58906206))
* apply consistent origin checks to WebSocket redirects
([#3693](https://github.com/openai/openai-python/issues/3693))
([1b324d0](https://github.com/openai/openai-python/commit/1b324d044dcedc377e688c405416f928b0aedfb6))
* **azure:** encode deployment names consistently
([#3683](https://github.com/openai/openai-python/issues/3683))
([689538d](https://github.com/openai/openai-python/commit/689538d531692e30ac1928779e6f1b97cc95db45))
* **azure:** keep provider validation errors value-free
([#3691](https://github.com/openai/openai-python/issues/3691))
([72529c0](https://github.com/openai/openai-python/commit/72529c013707e7b5ed99edbc836603618a1e4be6))
* **azure:** resolve one authentication mode
([#3689](https://github.com/openai/openai-python/issues/3689))
([e3d0681](https://github.com/openai/openai-python/commit/e3d06812535d7f2fe1bc6e57c12bd0ac0dd4acd1))
* compute custom-code summaries from trusted workflow code
([#3692](https://github.com/openai/openai-python/issues/3692))
([2b5868d](https://github.com/openai/openai-python/commit/2b5868da23cb61876ec27d76591ea5fdb2b8c14d))
* create upload example fixtures in private directories
([#3686](https://github.com/openai/openai-python/issues/3686))
([f36e6f7](https://github.com/openai/openai-python/commit/f36e6f79662b22e9d8f1660d4576b4b15cd8ac76))
* decode SSE incrementally without limiting event size
([#3687](https://github.com/openai/openai-python/issues/3687))
([2598d53](https://github.com/openai/openai-python/commit/2598d530cf682784465e9f82558a830ac5f94486))
* keep Python SDK diagnostics metadata-only
([#3685](https://github.com/openai/openai-python/issues/3685))
([600aa8d](https://github.com/openai/openai-python/commit/600aa8daade4c9df87deb76f6b8442ee828a7cbc))
* Preserve Azure authentication boundaries across transports
([#3684](https://github.com/openai/openai-python/issues/3684))
([06ef57c](https://github.com/openai/openai-python/commit/06ef57caafe73d625ad4458ab5d29241e30c44bc))
* preserve the configured TLS hostname
([#3694](https://github.com/openai/openai-python/issues/3694))
([aa5fbc4](https://github.com/openai/openai-python/commit/aa5fbc401f179fc515905d84623718c2b66ec653))
* preserve WebSocket send queue byte accounting during flush
([#3688](https://github.com/openai/openai-python/issues/3688))
([96f966d](https://github.com/openai/openai-python/commit/96f966d77bddc7449ae23fda5b29ef44c3f98cc2))


### Chores

* **api:** Clarify image background docs and preview support
([#3703](https://github.com/openai/openai-python/issues/3703))
([bedb9a7](https://github.com/openai/openai-python/commit/bedb9a7b8839e193107e88b92f7cc166f08ac83d))
* **api:** document supported image generation models
([#3695](https://github.com/openai/openai-python/issues/3695))
([8edd9ae](https://github.com/openai/openai-python/commit/8edd9ae411f9d0a5385447a4697c9f7042868213))
* **api:** move chat validation tests out of generated code
([#3698](https://github.com/openai/openai-python/issues/3698))
([9d3ba20](https://github.com/openai/openai-python/commit/9d3ba20f9567a62b2ebb3542661a60dc4ed2fd67))
* **api:** move webhook tests out of generated code
([#3700](https://github.com/openai/openai-python/issues/3700))
([04ecb3c](https://github.com/openai/openai-python/commit/04ecb3c21712e1236e7aa2eb9d715d57acb26c35))
* **api:** remove redundant generated formatting
([#3696](https://github.com/openai/openai-python/issues/3696))
([5ac1e03](https://github.com/openai/openai-python/commit/5ac1e03e1ae8f08acf6213b3e44772734dbb8e59))
* **api:** remove redundant generated test edits
([#3697](https://github.com/openai/openai-python/issues/3697))
([351ef84](https://github.com/openai/openai-python/commit/351ef84dc25211ea871f60eb16a469a89d20e133))
* **api:** Update SDK generation metadata only
([#3716](https://github.com/openai/openai-python/issues/3716))
([e43b422](https://github.com/openai/openai-python/commit/e43b422412a9e96c9cc5192c61fffbe2d7e04836))
* set a ceiling for Python SDK customization
([#3714](https://github.com/openai/openai-python/issues/3714))
([04d5d79](https://github.com/openai/openai-python/commit/04d5d79fc71e883a3114b80ed8408bef76e72cd3))


### Documentation

* **api:** restore generated ChatKit API index
([#3705](https://github.com/openai/openai-python/issues/3705))
([4534106](https://github.com/openai/openai-python/commit/45341061b382473ee8a8e8c796ef8819089abbb6))
* standardize Python SDK vulnerability disclosure policy
([#3642](https://github.com/openai/openai-python/issues/3642))
([1fc0a21](https://github.com/openai/openai-python/commit/1fc0a217047cf7f767db10479b5d741b870bc74f))


### Refactors

* **api:** isolate audio response format selection
([#3701](https://github.com/openai/openai-python/issues/3701))
([ece4324](https://github.com/openai/openai-python/commit/ece4324da0b96f848b48bdef090a372ff0a1db26))
* **api:** isolate vector-store polling helpers
([#3713](https://github.com/openai/openai-python/issues/3713))
([a002ef3](https://github.com/openai/openai-python/commit/a002ef3c7d2276fb63deeea58d920d87da61b1e5))
* **api:** move file processing polling into SDK-owned helpers
([#3712](https://github.com/openai/openai-python/issues/3712))
([5f20c51](https://github.com/openai/openai-python/commit/5f20c51c694801cb0a4d0fed413bedc1bac2dda0))
* **api:** share embedding response decoding
([#3699](https://github.com/openai/openai-python/issues/3699))
([50de9af](https://github.com/openai/openai-python/commit/50de9af45900fa2c88ac11efbb7f9a7ff0057c42))
* **api:** share webhook signature verification
([#3704](https://github.com/openai/openai-python/issues/3704))
([e14ac34](https://github.com/openai/openai-python/commit/e14ac34376efa5260ef9ef82b939f451f6f9a66a))

---
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