Python SDK Changelog File — OpenAI

Changelog

3.19.2 (2026-09-23)

Bug Fixes

preserve single files for fallback extraction paths (#3875) (bfd3680)

Chores

api: clarify approximate web search location defaults (#3953) (a95c95e)
api: clarify Realtime modality array definitions (#3954) (e79cf53)
api: correct fine-tuning bounds and Realtime response reference (#3949) (325a948)

3.19.1 (2026-09-23)

Bug Fixes

chat: preserve single-pass tool iterables (#3770) (33ffa1f)
client: merge HTTP headers case-insensitively (#3486) (5e39766)

Chores

api: clarify Chat Completions seed limits (#3945) (be9d666)

Documentation

clarify collaborator-only pull request policy (#3948) (ead1fa2)

3.19.0 (2026-09-22)

Features

api: add GCP external storage support (#3943) (d12d60f)
api: add GPT-Rosalind research model (#3940) (d041d73)

Bug Fixes

_utils/_transform: propagate api_exclude in _async_transform_recursive (#3324) (161ae65)
api: handle omission markers in queued WebSocket events (#3944) (63e4616)
client: retry only replayable request content (#3771) (6e0c2be)
client: tolerate older optional aiohttp installations (#3941) (0d91efb)
helpers: use asyncio.get_running_loop() inside async methods (#3289) (bac3545)

3.18.0 (2026-09-22)

Features

api: add GPT-6 Sol and Luna model identifiers (#3935) (455ce1b)

3.17.0 (2026-09-22)

Features

api: add external storage configuration management (#3909) (6332577)
api: add safety case retrieval (#3911) (a87b938)
api: add safety warning and deactivation webhook events (#3908) (19f1f37)
api: add session environment reset events (#3913) (69a2c1d)
api: add SIP media security to incoming call events (#3907) (c377eb2)
api: support environment variable vault credentials (#3905) (eeebc53)

Bug Fixes

api: correct model types and network policy docs (618bb31)
api: preserve model choices and defer error response docs (#3931) (6e7a90f)
lib: treat null message content as empty in parse_response (#3851) (fab5283)
lib: use log.warning instead of the deprecated log.warn (#3878) (56b1708)

Chores

api: document API error response contracts (#3917) (fededc9)
api: document response management resources (#3912) (eaa5b77)
deps: bump actions/github-script from 7.1.0 to 9.0.0 (#3769) (32e07e1)
deps: bump actions/upload-artifact from 5.0.0 to 7.0.1 (#3767) (b413abe)
deps: bump CodeQL init and analyze to 4.37.8 (#3765) (f95237f)
deps: bump CodeQL init and analyze to 4.37.8 (#3766) (690a8b5)
deps: bump httpx2 from 2.7.0 to 2.12.0 in the python-security group across 1 directory (#3823) (9b8e399)
deps: bump openai/codex-action from 1.11 to 1.12 (#3768) (9c1579b)

3.16.2 (2026-09-18)

Bug Fixes

parsing: drop TextFormatT parameterization in parse_response to fix memory leak (#3084) (#3088) (009b7f6)

3.16.1 (2026-09-18)

Bug Fixes

api: avoid loading unrelated API resources on first use (#3898) (68e4317)

3.16.0 (2026-09-18)

Features

api: add webhook endpoint management (#3892) (9a11f6e)

Chores

api: deprecate MCP connector_id (#3894) (1ccaf07)

3.15.0 (2026-09-18)

Features

api: add agent session model settings (#3882) (4b15817)
api: add audio-mini model choices (#3886) (a6eeb3f)
api: add compaction progress events (#3866) (98e1d24)
api: add managed Responses WebSocket sessions (#3887) (3b865af)
api: add prompt-cache prewarming (#3888) (8f7cdb8)

Bug Fixes

preserve chat stream moderation results (#3864) (b77076d)

Chores

api: clarify incoming SIP call ID usage (#3885) (f0457ab)
api: update image request examples (#3889) (bb79676)

Documentation

realtime: remove nonexistent type imports (#3869) (2971aaf)

3.14.1 (2026-09-15)

Bug Fixes

client: validate retry limits and preserve application errors (#3867) (f86c721)
correct typo "th" to "the" in StreamAlreadyConsumed error message (#3022) (7186203)
examples: correct Azure endpoint hostname (#3298) (543516c)
examples: refresh chat streaming examples (#2974) (54f460e)
examples: split push-to-talk shebang arguments (#3210) (d241ed6)
examples: use uv in remaining Python launchers (#3821) (8c76c4f)
log only metadata for Live WebSocket diagnostics (#3865) (ccc10f5)
responses: skip structured parsing for commentary (#3861) (6520df1)

Chores

examples: bump module_client.py to gpt-5.6 (#3211) (1493321)
remove unused fine-tuning data validators (#3863) (9640f29)

Documentation

clarify async client cleanup (#2388) (a3d83b5)
clarify filenames for in-memory file uploads (#3729) (cb27380)
client: correct retry jitter comment (#2252) (bdbbc16)
fix Realtime docstring wording (#3535) (8cb9ded)
fix reusing wording in Azure client docstrings (#3061) (dc625f9)
fix streaming comment typo (#3005) (d421d7a)
fix vector store polling helper paths (#3101) (2ef2de6)
readme: correct SSE terminology (#2837) (caaa9b4)
update Responses API reference link (#3279) (557bd06)
utils: correct query component RFC reference (#3300) (929a8a5)

3.14.0 (2026-09-14)

Features

streaming: normalize errors raised while reading streams (#3827) (d7c41ef)

Bug Fixes

bound vector store file polling (#3401) (ae41bc4)
example: refresh realtime push_to_talk_app session types (#2926) (0b7ad38)
files: normalize PathLike upload tuples (#3475) (90ac74c)
include completion in content filter errors (#3094) (e57a1b1)
logging: support standard OPENAI_LOG levels (#3734) (44000e0)
normalize API error codes to strings (#3532) (233d955), closes #3531
preserve response stream indexes after empty items (#3126) (8f84fbd)
responses: handle null text in output_text (#3019) (df6b72c)

Documentation

use the vision guide image in README example (#3849) (1ed8902)

3.13.0 (2026-09-10)

Features

api: add Agents API (1c4284a)

3.12.0 (2026-09-10)

Features

api: Add Live API (0e4bfef)

Bug Fixes

add aclose() to AsyncStream for standard async cleanup (#2854) (802b334)
handle bare dict and list annotations without type arguments (#3760) (c7e8c03)
preserve finalized output on null response completion (#3345) (adb212e)

3.11.0 (2026-09-09)

Features

api: Add expiration controls for service account keys (#3825) (f348ec8)

3.10.0 (2026-09-08)

Features

api: add GPT Image 2.5 models and image options (#3824) (5b39c45)
api: add service-account API key expiration fields (#3802) (f1cd7f0)

3.9.0 (2026-09-05)

Features

api: Add prompt cache diagnostics (#3800) (8326784)
api: correct function argument completion event fields (openapi-545) (#3801) (2a98f6a)

Bug Fixes

api: accept incomplete web search call statuses (#3786) (3cc8d78)
refuse overflowing server retry delays (#3799) (88b4d43)

Chores

api: document throttling and model overload responses — SDK-235 (#3803) (be92815)
migrate to forked steady (#3795) (b24aeda)

3.8.0 (2026-09-03)

Features

api: add gpt-6-astra and related features (#3791) (09f446f)

Documentation

add canonical SDK security model (#3778) (2a097b9)

3.7.0 (2026-09-02)

Features

api: update usage APIs and documentation (#3779) (6f0da16)

Bug Fixes

avoid repeated numpy checks for embeddings (#3757) (b19c216)

3.6.0 (2026-08-27)

Features

api: add compute_units to Responses and Chat Completions usage (#3749) (52421d1)

Bug Fixes

auth: harden X.509 workload identity integration (#3740) (fc3ad6c)

Chores

deps-dev: bump @stdy/cli from 0.22.1 to 0.22.2 (#3719) (4f5598c)
deps-dev: bump mypy from 1.17 to 2.3.1 (#3747) (0b52c9e)
deps-dev: bump pandas-stubs from 2.2.2.240807 to 2.3.3.260113 (#3659) (95f0b43)
deps-dev: bump pyright from 1.1.399 to 1.1.413 (#3744) (9917c6e)
deps-dev: bump rich from 14.2.0 to 15.0.0 (#3717) (7a5484d)
deps: bump actions/checkout from 6.0.2 to 7.0.1 (#3665) (d0a2550)
deps: bump actions/download-artifact from 6.0.0 to 8.0.1 (#3669) (f627619)
deps: bump github/codeql-action/init from 4.37.1 to 4.37.7 (#3745) (a36010d)

Build System

deps: bump actions/setup-python from 5.6.0 to 7.0.0 (#3672) (d765db7)
deps: bump pypa/gh-action-pypi-publish from 1.14.0 to 1.14.2 (#3666) (dacbb66)

3.5.0 (2026-08-27)

Features

api: make function call output call IDs optional (#3738) (c74501d)

3.4.0 (2026-08-25)

Features

api: Add obfuscation field to ChatCompletionChunk (#3690) (c7d8e1d)
api: add project residency configuration and cost quantity units (#3726) (bc4f8ef)

Bug Fixes

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

Chores

api: Clarify image background docs and preview support (#3703) (bedb9a7)
api: document supported image generation models (#3695) (8edd9ae)
api: move chat validation tests out of generated code (#3698) (9d3ba20)
api: move webhook tests out of generated code (#3700) (04ecb3c)
api: remove redundant generated formatting (#3696) (5ac1e03)
api: remove redundant generated test edits (#3697) (351ef84)
api: Update SDK generation metadata only (#3716) (e43b422)
set a ceiling for Python SDK customization (#3714) (04d5d79)

Documentation

api: restore generated ChatKit API index (#3705) (4534106)
standardize Python SDK vulnerability disclosure policy (#3642) (1fc0a21)

Refactors

api: isolate audio response format selection (#3701) (ece4324)
api: isolate vector-store polling helpers (#3713) (a002ef3)
api: move file processing polling into SDK-owned helpers (#3712) (5f20c51)
api: share embedding response decoding (#3699) (50de9af)
api: share webhook signature verification (#3704) (e14ac34)

3.3.1 (2026-08-19)

Bug Fixes

deps: update dependencies with published security fixes (#3680) (53aa4fc)

Chores

build: migrate to uv (#3653) (b37e85d)
deps: remove jsonschema and unused fixture-validation dependencies (0dfdfdd)
lock the repository Pyright toolchain (#3678) (3079be2)
run the mock server from locked local tooling (#3679) (370fcc6)

Refactors

deps: use the standard library for platform detection (d5b0065)

Build System

replace the external README metadata hook (e673ca8)

3.3.0 (2026-08-18)

Features

support named data-residency endpoints (#3646) (11ee914)

Bug Fixes

require patched optional networking dependencies (#3651) (40e56de)

Chores

remove unused dependencies and pin build tooling (#3650) (eee8e4a)

Documentation

strengthen Python SDK security contribution guidance (#3639) (6577709)

3.2.0 (2026-08-17)

Features

add Bedrock Runtime endpoint support (SDK-290) (#3623) (86267d2)
api: Add shell call streaming events and new service/image types (#3635) (ff14a33)

3.1.0 (2026-08-14)

Features

api: add WebSocket stream IDs (#3612) (d9029e3)
api: add workload identity access token issued event (#3601) (df274d4)
api: deprecate Sora video APIs (#3610) (721cb1c)
api: Ultrafast tier, structured MCP and websocket errors, separate websocket events (#3617) (f38355e)

Chores

remove Stainless attribution and infrastructure (#3599) (a1eeab5)

3.0.0 (2026-08-12)

⚠ BREAKING CHANGES

api: HTTPX2 is now the default HTTP client, and httpx is no longer installed automatically. Applications using custom HTTPX clients, transports, or configuration objects must migrate to their HTTPX2 equivalents or use the temporary, runtime-only legacy HTTPX escape hatch. See the HTTPX2 migration guide.

Features

api: migrate to HTTPX2 (#3594)

2.54.0 (2026-08-11)

Features

api: Add new Responses model identifiers (#3595) (0652787)

Bug Fixes

api: clarify audio upload metadata requirements (#3596) (28888f9)

Chores

api: Update generated-file header attribution to Castiron (#3583) (ea17fda)

2.53.0 (2026-08-03)

Features

api: Add gpt-5.5 and tool name/namespace to Responses types (#3569) (dd1202d)

Bug Fixes

ci: avoid NumPy source builds and duplicate HTTPX coverage (#3573) (b58332f)

2.52.1 (2026-07-31)

Full Changelog: v2.52.0...v2.52.1

Chores

ci: pin setup-uv v5 to its underlying commit (#3560) (cbdc98b)

2.52.0 (2026-07-31)

Full Changelog: v2.51.0...v2.52.0

Features

api: content provenance checks (1d6c118)

Bug Fixes

client: honor Retry-After delays up to two minutes (#3555) (7fa7946)

Documentation

add API-key mTLS HTTP client recipes (#3552) (7a3d5e4)

2.51.0 (2026-07-30)

Full Changelog: v2.50.0...v2.51.0

Features

api: fast tier (8808ed2)

Changelog

3.19.2 (2026-09-23)

Bug Fixes

preserve single files for fallback extraction paths (#3875) (bfd3680)

Chores

api: clarify approximate web search location defaults (#3953) (a95c95e)
api: clarify Realtime modality array definitions (#3954) (e79cf53)
api: correct fine-tuning bounds and Realtime response reference (#3949) (325a948)

3.19.1 (2026-09-23)

Bug Fixes

chat: preserve single-pass tool iterables (#3770) (33ffa1f)
client: merge HTTP headers case-insensitively (#3486) (5e39766)

Chores

api: clarify Chat Completions seed limits (#3945) (be9d666)

Documentation

clarify collaborator-only pull request policy (#3948) (ead1fa2)

3.19.0 (2026-09-22)

Features

api: add GCP external storage support (#3943) (d12d60f)
api: add GPT-Rosalind research model (#3940) (d041d73)

Bug Fixes

_utils/_transform: propagate api_exclude in _async_transform_recursive (#3324) (161ae65)
api: handle omission markers in queued WebSocket events (#3944) (63e4616)
client: retry only replayable request content (#3771) (6e0c2be)
client: tolerate older optional aiohttp installations (#3941) (0d91efb)
helpers: use asyncio.get_running_loop() inside async methods (#3289) (bac3545)

3.18.0 (2026-09-22)

Features

api: add GPT-6 Sol and Luna model identifiers (#3935) (455ce1b)

3.17.0 (2026-09-22)

Features

api: add external storage configuration management (#3909) (6332577)
api: add safety case retrieval (#3911) (a87b938)
api: add safety warning and deactivation webhook events (#3908) (19f1f37)
api: add session environment reset events (#3913) (69a2c1d)
api: add SIP media security to incoming call events (#3907) (c377eb2)
api: support environment variable vault credentials (#3905) (eeebc53)

Bug Fixes

api: correct model types and network policy docs (618bb31)
api: preserve model choices and defer error response docs (#3931) (6e7a90f)
lib: treat null message content as empty in parse_response (#3851) (fab5283)
lib: use log.warning instead of the deprecated log.warn (#3878) (56b1708)

Chores

api: document API error response contracts (#3917) (fededc9)
api: document response management resources (#3912) (eaa5b77)
deps: bump actions/github-script from 7.1.0 to 9.0.0 (#3769) (32e07e1)
deps: bump actions/upload-artifact from 5.0.0 to 7.0.1 (#3767) (b413abe)
deps: bump CodeQL init and analyze to 4.37.8 (#3765) (f95237f)
deps: bump CodeQL init and analyze to 4.37.8 (#3766) (690a8b5)
deps: bump httpx2 from 2.7.0 to 2.12.0 in the python-security group across 1 directory (#3823) (9b8e399)
deps: bump openai/codex-action from 1.11 to 1.12 (#3768) (9c1579b)

3.16.2 (2026-09-18)

Bug Fixes

parsing: drop TextFormatT parameterization in parse_response to fix memory leak (#3084) (#3088) (009b7f6)

3.16.1 (2026-09-18)

Bug Fixes

api: avoid loading unrelated API resources on first use (#3898) (68e4317)

3.16.0 (2026-09-18)

Features

api: add webhook endpoint management (#3892) (9a11f6e)

Chores

api: deprecate MCP connector_id (#3894) (1ccaf07)

3.15.0 (2026-09-18)

Features

api: add agent session model settings (#3882) (4b15817)
api: add audio-mini model choices (#3886) (a6eeb3f)
api: add compaction progress events (#3866) (98e1d24)
api: add managed Responses WebSocket sessions (#3887) (3b865af)
api: add prompt-cache prewarming (#3888) (8f7cdb8)

Bug Fixes

preserve chat stream moderation results (#3864) (b77076d)

Chores

api: clarify incoming SIP call ID usage (#3885) (f0457ab)
api: update image request examples (#3889) (bb79676)

Documentation

realtime: remove nonexistent type imports (#3869) (2971aaf)

3.14.1 (2026-09-15)

Bug Fixes

client: validate retry limits and preserve application errors (#3867) (f86c721)
correct typo "th" to "the" in StreamAlreadyConsumed error message (#3022) (7186203)
examples: correct Azure endpoint hostname (#3298) (543516c)
examples: refresh chat streaming examples (#2974) (54f460e)
examples: split push-to-talk shebang arguments (#3210) (d241ed6)
examples: use uv in remaining Python launchers (#3821) (8c76c4f)
log only metadata for Live WebSocket diagnostics (#3865) (ccc10f5)
responses: skip structured parsing for commentary (#3861) (6520df1)

Chores

examples: bump module_client.py to gpt-5.6 (#3211) (1493321)
remove unused fine-tuning data validators (#3863) (9640f29)

Documentation

clarify async client cleanup (#2388) (a3d83b5)
clarify filenames for in-memory file uploads (#3729) (cb27380)
client: correct retry jitter comment (#2252) (bdbbc16)
fix Realtime docstring wording (#3535) (8cb9ded)
fix reusing wording in Azure client docstrings (#3061) (dc625f9)
fix streaming comment typo (#3005) (d421d7a)
fix vector store polling helper paths (#3101) (2ef2de6)
readme: correct SSE terminology (#2837) (caaa9b4)
update Responses API reference link (#3279) (557bd06)
utils: correct query component RFC reference (#3300) (929a8a5)

3.14.0 (2026-09-14)

Features

streaming: normalize errors raised while reading streams (#3827) (d7c41ef)

Bug Fixes

bound vector store file polling (#3401) (ae41bc4)
example: refresh realtime push_to_talk_app session types (#2926) (0b7ad38)
files: normalize PathLike upload tuples (#3475) (90ac74c)
include completion in content filter errors (#3094) (e57a1b1)
logging: support standard OPENAI_LOG levels (#3734) (44000e0)
normalize API error codes to strings (#3532) (233d955), closes #3531
preserve response stream indexes after empty items (#3126) (8f84fbd)
responses: handle null text in output_text (#3019) (df6b72c)

Documentation

use the vision guide image in README example (#3849) (1ed8902)

3.13.0 (2026-09-10)

Features

api: add Agents API (1c4284a)

3.12.0 (2026-09-10)

Features

api: Add Live API (0e4bfef)

Bug Fixes

add aclose() to AsyncStream for standard async cleanup (#2854) (802b334)
handle bare dict and list annotations without type arguments (#3760) (c7e8c03)
preserve finalized output on null response completion (#3345) (adb212e)

3.11.0 (2026-09-09)

Features

api: Add expiration controls for service account keys (#3825) (f348ec8)

3.10.0 (2026-09-08)

Features

api: add GPT Image 2.5 models and image options (#3824) (5b39c45)
api: add service-account API key expiration fields (#3802) (f1cd7f0)

3.9.0 (2026-09-05)

Features

api: Add prompt cache diagnostics (#3800) (8326784)
api: correct function argument completion event fields (openapi-545) (#3801) (2a98f6a)

Bug Fixes

api: accept incomplete web search call statuses (#3786) (3cc8d78)
refuse overflowing server retry delays (#3799) (88b4d43)

Chores

api: document throttling and model overload responses — SDK-235 (#3803) (be92815)
migrate to forked steady (#3795) (b24aeda)

3.8.0 (2026-09-03)

Features

api: add gpt-6-astra and related features (#3791) (09f446f)

Documentation

add canonical SDK security model (#3778) (2a097b9)

3.7.0 (2026-09-02)

Features

api: update usage APIs and documentation (#3779) (6f0da16)

Bug Fixes

avoid repeated numpy checks for embeddings (#3757) (b19c216)

3.6.0 (2026-08-27)

Features

api: add compute_units to Responses and Chat Completions usage (#3749) (52421d1)

Bug Fixes

auth: harden X.509 workload identity integration (#3740) (fc3ad6c)

Chores

deps-dev: bump @stdy/cli from 0.22.1 to 0.22.2 (#3719) (4f5598c)
deps-dev: bump mypy from 1.17 to 2.3.1 (#3747) (0b52c9e)
deps-dev: bump pandas-stubs from 2.2.2.240807 to 2.3.3.260113 (#3659) (95f0b43)
deps-dev: bump pyright from 1.1.399 to 1.1.413 (#3744) (9917c6e)
deps-dev: bump rich from 14.2.0 to 15.0.0 (#3717) (7a5484d)
deps: bump actions/checkout from 6.0.2 to 7.0.1 (#3665) (d0a2550)
deps: bump actions/download-artifact from 6.0.0 to 8.0.1 (#3669) (f627619)
deps: bump github/codeql-action/init from 4.37.1 to 4.37.7 (#3745) (a36010d)

Build System

deps: bump actions/setup-python from 5.6.0 to 7.0.0 (#3672) (d765db7)
deps: bump pypa/gh-action-pypi-publish from 1.14.0 to 1.14.2 (#3666) (dacbb66)

3.5.0 (2026-08-27)

Features

api: make function call output call IDs optional (#3738) (c74501d)

3.4.0 (2026-08-25)

Features

api: Add obfuscation field to ChatCompletionChunk (#3690) (c7d8e1d)
api: add project residency configuration and cost quantity units (#3726) (bc4f8ef)

Bug Fixes

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

Chores

api: Clarify image background docs and preview support (#3703) (bedb9a7)
api: document supported image generation models (#3695) (8edd9ae)
api: move chat validation tests out of generated code (#3698) (9d3ba20)
api: move webhook tests out of generated code (#3700) (04ecb3c)
api: remove redundant generated formatting (#3696) (5ac1e03)
api: remove redundant generated test edits (#3697) (351ef84)
api: Update SDK generation metadata only (#3716) (e43b422)
set a ceiling for Python SDK customization (#3714) (04d5d79)

Documentation

api: restore generated ChatKit API index (#3705) (4534106)
standardize Python SDK vulnerability disclosure policy (#3642) (1fc0a21)

Refactors

api: isolate audio response format selection (#3701) (ece4324)
api: isolate vector-store polling helpers (#3713) (a002ef3)
api: move file processing polling into SDK-owned helpers (#3712) (5f20c51)
api: share embedding response decoding (#3699) (50de9af)
api: share webhook signature verification (#3704) (e14ac34)

3.3.1 (2026-08-19)

Bug Fixes

deps: update dependencies with published security fixes (#3680) (53aa4fc)

Chores

build: migrate to uv (#3653) (b37e85d)
deps: remove jsonschema and unused fixture-validation dependencies (0dfdfdd)
lock the repository Pyright toolchain (#3678) (3079be2)
run the mock server from locked local tooling (#3679) (370fcc6)

Refactors

deps: use the standard library for platform detection (d5b0065)

Build System

replace the external README metadata hook (e673ca8)

3.3.0 (2026-08-18)

Features

support named data-residency endpoints (#3646) (11ee914)

Bug Fixes

require patched optional networking dependencies (#3651) (40e56de)

Chores

remove unused dependencies and pin build tooling (#3650) (eee8e4a)

Documentation

strengthen Python SDK security contribution guidance (#3639) (6577709)

3.2.0 (2026-08-17)

Features

add Bedrock Runtime endpoint support (SDK-290) (#3623) (86267d2)
api: Add shell call streaming events and new service/image types (#3635) (ff14a33)

3.1.0 (2026-08-14)

Features

api: add WebSocket stream IDs (#3612) (d9029e3)
api: add workload identity access token issued event (#3601) (df274d4)
api: deprecate Sora video APIs (#3610) (721cb1c)
api: Ultrafast tier, structured MCP and websocket errors, separate websocket events (#3617) (f38355e)

Chores

remove Stainless attribution and infrastructure (#3599) (a1eeab5)

3.0.0 (2026-08-12)

⚠ BREAKING CHANGES

api: HTTPX2 is now the default HTTP client, and httpx is no longer installed automatically. Applications using custom HTTPX clients, transports, or configuration objects must migrate to their HTTPX2 equivalents or use the temporary, runtime-only legacy HTTPX escape hatch. See the HTTPX2 migration guide.

Features

api: migrate to HTTPX2 (#3594)

2.54.0 (2026-08-11)

Features

api: Add new Responses model identifiers (#3595) (0652787)

Bug Fixes

api: clarify audio upload metadata requirements (#3596) (28888f9)

Chores

api: Update generated-file header attribution to Castiron (#3583) (ea17fda)

2.53.0 (2026-08-03)

Features

api: Add gpt-5.5 and tool name/namespace to Responses types (#3569) (dd1202d)

Bug Fixes

ci: avoid NumPy source builds and duplicate HTTPX coverage (#3573) (b58332f)

2.52.1 (2026-07-31)

Full Changelog: v2.52.0...v2.52.1

Chores

ci: pin setup-uv v5 to its underlying commit (#3560) (cbdc98b)

2.52.0 (2026-07-31)

Full Changelog: v2.51.0...v2.52.0

Features

api: content provenance checks (1d6c118)

Bug Fixes

client: honor Retry-After delays up to two minutes (#3555) (7fa7946)

Documentation

add API-key mTLS HTTP client recipes (#3552) (7a3d5e4)

2.51.0 (2026-07-30)

Full Changelog: v2.50.0...v2.51.0

Features

api: fast tier (8808ed2)