What's Changed

Fixes

• Copy FieldInfo instance if necessary during FieldInfo build by @Viicos in #11980

Full Changelog: v2.11.6...v2.11.7

v2.11.6 (2025-06-13)

What's Changed

Fixes

• Rebuild dataclass fields before schema generation by @Viicos in #11949
• Always store the original field assignment on FieldInfo by @Viicos in #11946

Full Changelog: v2.11.5...v2.11.6

What's Changed

Fixes

• Check if FieldInfo is complete after applying type variable map by @Viicos in #11855
• Do not delete mock validator/serializer in model_rebuild() by @Viicos in #11890
• Do not duplicate metadata on model rebuild by @Viicos in #11902

Full Changelog: v2.11.4...v2.11.5

What's Changed

Packaging

• Bump mkdocs-llmstxt to v0.2.0 by @Viicos in #11725

Changes

• Allow config and bases to be specified together in create_model() by @Viicos in #11714.
  This change was backported as it was previously possible (although not meant to be supported)
  to provide model_config as a field, which would make it possible to provide both configuration
  and bases.

Fixes

• Remove generics cache workaround by @Viicos in #11755
• Remove coercion of decimal constraints by @Viicos in #11772
• Fix crash when expanding root type in the mypy plugin by @Viicos in #11735
• Fix issue with recursive generic models by @Viicos in #11775
• Traverse function-before schemas during schema gathering by @Viicos in #11801

What's Changed

Packaging

• Update V1 copy to v1.10.21 by @Viicos in #11706

Fixes

• Preserve field description when rebuilding model fields by @Viicos in #11698

Full Changelog: v2.11.2...v2.11.3

What's Changed

Fixes

• Bump pydantic-core to v2.33.1 by @Viicos in #11678
• Make sure __pydantic_private__ exists before setting private attributes by @Viicos in #11666
• Do not override FieldInfo._complete when using field from parent class by @Viicos in #11668
• Provide the available definitions when applying discriminated unions by @Viicos in #11670
• Do not expand root type in the mypy plugin for variables by @Viicos in #11676
• Mention the attribute name in model fields deprecation message by @Viicos in #11674
• Properly validate parameterized mappings by @Viicos in #11658
• Prepare release v2.11.2 by @Viicos in #11684

Full Changelog: v2.11.1...v2.11.2

What's Changed

Fixes

• Do not override 'definitions-ref' schemas containing serialization schemas or metadata by @Viicos in #11644

Full Changelog: v2.11.0...v2.11.1

What's Changed

Packaging

• Re-enable memray related tests on Python 3.12+ by @Viicos in #11191
• Bump astral-sh/setup-uv from 4 to 5 by @dependabot in #11205
• Add a check_pydantic_core_version() function by @Viicos in #11324
• Remove greenlet development dependency by @Viicos in #11351
• Bump ruff from 0.9.2 to 0.9.5 by @Viicos in #11407
• Improve release automation process by @austinyu in #11427
• Bump dawidd6/action-download-artifact from 8 to 9 by @dependabot in #11513
• Bump pydantic-core to v2.32.0 by @Viicos in #11567

New Features

• Support unsubstituted type variables with both a default and a bound or constraints by @FyZzyss in #10789
• Add a default_factory_takes_validated_data property to FieldInfo by @Viicos in #11034
• Raise a better error when a generic alias is used inside type[] by @Viicos in #11088
• Properly support PEP 695 generics syntax by @Viicos in #11189
• Properly support type variable defaults by @Viicos in #11332
• Add support for validating v6, v7, v8 UUIDs by @astei in #11436
• Improve alias configuration APIs by @sydney-runkle in #11468
• Add experimental support for free threading by @Viicos in #11516
• Add encoded_string() method to the URL types by @YassinNouh21 in #11580
• Add support for defer_build with @validate_call decorator by @Viicos in #11584
• Allow @with_config decorator to be used with keyword arguments by @Viicos in #11608
• Simplify customization of default value inclusion in JSON Schema generation by @Viicos in #11634
• Add generate_arguments_schema() function by @Viicos in #11572

Changes

• Rework create_model field definitions format by @Viicos in #11032
• Raise a deprecation warning when a field is annotated as final with a default value by @Viicos in #11168
• Deprecate accessing model_fields and model_computed_fields on instances by @Viicos in #11169
• Move core schema generation logic for path types inside the GenerateSchema class by @sydney-runkle in #10846
• Move Mapping schema gen to GenerateSchema to complete removal of prepare_annotations_for_known_type workaround by @sydney-runkle in #11247
• Remove Python 3.8 Support by @sydney-runkle in #11258
• Optimize calls to get_type_ref by @Viicos in #10863
• Disable pydantic-core core schema validation by @sydney-runkle in #11271

Performance

• Only evaluate FieldInfo annotations if required during schema building by @Viicos in #10769
• Improve __setattr__ performance of Pydantic models by caching setter functions by @MarkusSintonen in #10868
• Improve annotation application performance by @Viicos in #11186
• Improve performance of _typing_extra module by @Viicos in #11255
• Refactor and optimize schema cleaning logic by @Viicos in #11244
• Create a single dictionary when creating a CoreConfig instance by @sydney-runkle in #11384
• Reuse cached core schemas for parametrized generic Pydantic models by @MarkusSintonen in #11434

Fixes

• Add validation tests for _internal/_validators.py by @tkasuz in #10763
• Subclass all single host url classes from AnyUrl to preserve behavior from v2.9 by @sydney-runkle in #10856
• Improve TypeAdapter instance repr by @sydney-runkle in #10872
• Use the correct frame when instantiating a parametrized TypeAdapter by @Viicos in #10893
• Relax check for validated data in default factory utils by @sydney-runkle in #10909
• Fix type checking issue with model_fields and model_computed_fields by @sydney-runkle in #10911
• Use the parent configuration during schema generation for stdlib dataclasses by @sydney-runkle in #10928
• Use the globals of the function when evaluating the return type of serializers and computed_fields by @Viicos in #10929
• Fix url constraint application by @sydney-runkle in #10922
• Fix URL equality with different validation methods by @sydney-runkle in #10934
• Fix JSON schema title when specified as '' by @sydney-runkle in #10936
• Do not evaluate annotations for private fields by @Viicos in #10962
• Support serialization as any for Secret types and Url types by @sydney-runkle in #10947
• Fix type hint of Field.default to be compatible with Python 3.8 and 3.9 by @Viicos in #10972
• hashing support for urls by @sydney-runkle in #10975
• Hide BaseModel.__replace__ definition from type checkers by @Viicos in #10979
• Set fields when defer_build is set on Pydantic dataclasses by @Viicos in #10984
• Do not resolve the JSON Schema reference for dict core schema keys by @Viicos in #10989
• Use the globals of the function when evaluating the return type for PlainSerializer and WrapSerializer functions by @Viicos in #11008
• Fix host required enforcement for urls to be compatible with v2.9 behavior by @sydney-runkle in #11027
• Fix url json schema in serialization mode by @sydney-runkle in #11035
• Fix for comparison of AnyUrl objects by @alexprabhat99 in #11082
• Properly fetch PEP 695 type params for functions, do not fetch annotations from signature by @Viicos in #11093
• Infer final fields with a default value as class variables in the mypy plugin by @Viicos in #11121
• Recursively unpack Literal values if using PEP 695 type aliases by @Viicos in #11114
• Override __subclasscheck__ on ModelMetaclass to avoid memory leak and performance issues by @Viicos in #11116
• Include JSON Schema input core schema in function schemas by @Viicos in #11085
• Add len to _BaseUrl to avoid TypeError by @Kharianne in #11111
• Make sure the type reference is removed from the seen references by @Viicos in #11143
• Add FastAPI and SQLModel to third-party tests by @sydney-runkle in #11044
• Improve discriminated union error message for invalid union variants by @Viicos in #11161
• Unpack PEP 695 type aliases if using the Annotated form by @Viicos in #11109
• Remove custom MRO implementation of Pydantic models by @Viicos in #11184
• Add pandera third-party tests by @Viicos in #11193
• Add ODMantic third-party tests by @sydney-runkle in #11197
• Copy WithJsonSchema schema to avoid sharing mutated data by @thejcannon in #11014
• Do not cache parametrized models when in the process of parametrizing another model by @Viicos in #10704
• Add discriminated union related metadata entries to the CoreMetadata definition by @Viicos in #11216
• Consolidate schema definitions logic in the _Definitions class by @Viicos in #11208
• Fix url serialization for unions by @sydney-runkle in #11227
• Support initializing root model fields with values of the root type in the mypy plugin by @Viicos in #11212
• Move deque schema gen to GenerateSchema class by @sydney-runkle in https://github.com/pydantic/pydanti...

What's Changed

Packaging

• Bump pydantic-core to v2.32.0 by @Viicos in #11567

New Features

• Add experimental support for free threading by @Viicos in #11516

Fixes

• Fix NotRequired qualifier not taken into account in stringified annotation by @Viicos in #11559

New Contributors

• @joren485 made their first contribution in #11547

Full Changelog: v2.11.0b1...v2.11.0b2

GitHub release

What's Changed

class Model(BaseModel):
    _var: Final[int] = 1

Packaging

• Add a check_pydantic_core_version() function by @Viicos in #11324
• Remove greenlet development dependency by @Viicos in #11351
• Use the typing-inspection library by @Viicos in #11479
• Bump pydantic-core to v2.31.1 by @sydney-runkle in #11526

New Features

• Support unsubstituted type variables with both a default and a bound or constraints by @FyZzyss in #10789
• Add a default_factory_takes_validated_data property to FieldInfo by @Viicos in #11034
• Raise a better error when a generic alias is used inside type[] by @Viicos in #11088
• Properly support PEP 695 generics syntax by @Viicos in #11189
• Properly support type variable defaults by @Viicos in #11332
• Add support for validating v6, v7, v8 UUIDs by @astei in #11436
• Improve alias configuration APIs by @sydney-runkle in #11468

Changes

• Rework create_model field definitions format by @Viicos in #11032
• Raise a deprecation warning when a field is annotated as final with a default value by @Viicos in #11168
• Deprecate accessing model_fields and model_computed_fields on instances by @Viicos in #11169
• Breaking Change: Move core schema generation logic for path types inside the GenerateSchema class by @sydney-runkle in #10846
• Remove Python 3.8 Support by @sydney-runkle in #11258
• Optimize calls to get_type_ref by @Viicos in #10863
• Disable pydantic-core core schema validation by @sydney-runkle in #11271

Performance

• Only evaluate FieldInfo annotations if required during schema building by @Viicos in #10769
• Improve __setattr__ performance of Pydantic models by caching setter functions by @MarkusSintonen in #10868
• Improve annotation application performance by @Viicos in #11186
• Improve performance of _typing_extra module by @Viicos in #11255
• Refactor and optimize schema cleaning logic by @Viicos in #11244
• Create a single dictionary when creating a CoreConfig instance by @sydney-runkle in #11384
• Bump pydantic-core and thus use SchemaValidator and SchemaSerializer caching by @sydney-runkle in #11402
• Reuse cached core schemas for parametrized generic Pydantic models by @MarkusSintonen in #11434

Fixes

• Improve TypeAdapter instance repr by @sydney-runkle in #10872
• Use the correct frame when instantiating a parametrized TypeAdapter by @Viicos in #10893
• Infer final fields with a default value as class variables in the mypy plugin by @Viicos in #11121
• Recursively unpack Literal values if using PEP 695 type aliases by @Viicos in #11114
• Override __subclasscheck__ on ModelMetaclass to avoid memory leak and performance issues by @Viicos in #11116
• Remove unused _extract_get_pydantic_json_schema() parameter by @Viicos in #11155
• Improve discriminated union error message for invalid union variants by @Viicos in #11161
• Unpack PEP 695 type aliases if using the Annotated form by @Viicos in #11109
• Add missing stacklevel in deprecated_instance_property warning by @Viicos in #11200
• Copy WithJsonSchema schema to avoid sharing mutated data by @thejcannon in #11014
• Do not cache parametrized models when in the process of parametrizing another model by @Viicos in #10704
• Add discriminated union related metadata entries to the CoreMetadata definition by @Viicos in #11216
• Consolidate schema definitions logic in the _Definitions class by @Viicos in #11208
• Support initializing root model fields with values of the root type in the mypy plugin by @Viicos in #11212
• Fix various issues with dataclasses and use_attribute_docstrings by @Viicos in #11246
• Only compute normalized decimal places if necessary in decimal_places_validator by @misrasaurabh1 in #11281
• Add support for validation_alias in the mypy plugin by @Viicos in #11295
• Fix JSON Schema reference collection with "examples" keys by @Viicos in #11305
• Do not transform model serializer functions as class methods in the mypy plugin by @Viicos in #11298
• Simplify GenerateJsonSchema.literal_schema() implementation by @misrasaurabh1 in #11321
• Add additional allowed schemes for ClickHouseDsn by @Maze21127 in #11319
• Coerce decimal constraints to Decimal instances by @Viicos in #11350
• Use the correct JSON Schema mode when handling function schemas by @Viicos in #11367
• Improve exception message when encountering recursion errors during type evaluation by @Viicos in #11356
• Always include additionalProperties: True for arbitrary dictionary schemas by @austinyu in #11392
• Expose fallback parameter in serialization methods by @Viicos in #11398
• Fix path serialization behavior by @sydney-runkle in #11416
• Do not reuse validators and serializers during model rebuild by @Viicos in #11429
• Collect model fields when rebuilding a model by @Viicos in #11388
• Allow cached properties to be altered on frozen models by @Viicos in #11432
• Fix tuple serialization for Sequence types by @sydney-runkle in #11435
• Fix: do not check for __get_validators__ on classes where __get_pydantic_core_schema__ is also defined by @tlambert03 in #11444
• Allow callable instances to be used as serializers by @Viicos in #11451
• Improve error thrown when overriding field with a property by @sydney-runkle in #11459
• Fix JSON Schema generation with referenceable core schemas holding JSON metadata by @Viicos in #11475
• Support strict specification on union member types by @sydney-runkle in #11481
• Implicitly set validate_by_name to True when validate_by_alias is False by @sydney-runkle in #11503
• Change type of Any when synthesizing BaseSettings.__init__ signature in the mypy plugin by @Viicos in #11497
• Support type variable defaults referencing other type variables by @Viicos in #11520
• Fix ValueError on year zero by @davidhewitt in pydantic/pydantic-core#1583
• dataclass InitVar shouldn't be required on serialization by @sydney-runkle in pydantic/pydantic-core#1602

New Contributors

• @FyZzyss made their first contribution in #10789
• @tamird made their first contribution in #10948
• @felixxm made their first contribution in #11077
• @alexprabhat99 made their first contribution in #11082
• @Kharianne made their first c...