release: 0.59.0

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "0.58.2"
+  ".": "0.59.0"
 }

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 26
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/anthropic%2Fanthropic-59aad2898ad5b11d8c367967ca73213a83bb46f1ca20cd006ee00fc8010c5e65.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/anthropic%2Fanthropic-17f0c838a3c08e61b79d51ee22d850a44098c5432cf944ff5e1bcab69fa4018b.yml
 openapi_spec_hash: 6dcdf2b065d61612f4403a1786c3bee2
-config_hash: 29170d4f110e44c786b2ce308d7b6410
+config_hash: a230db180ca9a70de9a2d86d337d3052

CHANGELOG.md

@@ -1,5 +1,24 @@
 # Changelog
 
+## 0.59.0 (2025-07-23)
+
+Full Changelog: [v0.58.2...v0.59.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.58.2...v0.59.0)
+
+### Features
+
+* **api:** removed older deprecated models ([38998fd](https://github.com/anthropics/anthropic-sdk-python/commit/38998fdab79b62349481c9c49579a825a5a33761))
+
+
+### Bug Fixes
+
+* **parsing:** ignore empty metadata ([7099f32](https://github.com/anthropics/anthropic-sdk-python/commit/7099f32a401b1f2a08b358562e325571a5fce8f6))
+* **parsing:** parse extra field types ([dbea8a4](https://github.com/anthropics/anthropic-sdk-python/commit/dbea8a40469c30533e30dc1762bfba83159f090d))
+
+
+### Chores
+
+* **internal:** version bump ([5defffa](https://github.com/anthropics/anthropic-sdk-python/commit/5defffa3ab4b0299759f2a45ffa3f7a49e8c2ba5))
+
 ## 0.58.2 (2025-07-18)
 
 Full Changelog: [v0.58.1...v0.58.2](https://github.com/anthropics/anthropic-sdk-python/compare/v0.58.1...v0.58.2)

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "anthropic"
-version = "0.58.2"
+version = "0.59.0"
 description = "The official Python library for the anthropic API"
 dynamic = ["readme"]
 license = "MIT"

src/anthropic/_models.py

@@ -224,14 +224,18 @@ def construct(  # pyright: ignore[reportIncompatibleMethodOverride]
             else:
                 fields_values[name] = field_get_default(field)
 
+        extra_field_type = _get_extra_fields_type(__cls)
+
         _extra = {}
         for key, value in values.items():
             if key not in model_fields:
+                parsed = construct_type(value=value, type_=extra_field_type) if extra_field_type is not None else value
+
                 if PYDANTIC_V2:
-                    _extra[key] = value
+                    _extra[key] = parsed
                 else:
                     _fields_set.add(key)
-                    fields_values[key] = value
+                    fields_values[key] = parsed
 
         object.__setattr__(m, "__dict__", fields_values)
 
@@ -386,6 +390,23 @@ def _construct_field(value: object, field: FieldInfo, key: str) -> object:
     return construct_type(value=value, type_=type_, metadata=getattr(field, "metadata", None))
 
 
+def _get_extra_fields_type(cls: type[pydantic.BaseModel]) -> type | None:
+    if not PYDANTIC_V2:
+        # TODO
+        return None
+
+    schema = cls.__pydantic_core_schema__
+    if schema["type"] == "model":
+        fields = schema["schema"]
+        if fields["type"] == "model-fields":
+            extras = fields.get("extras_schema")
+            if extras and "cls" in extras:
+                # mypy can't narrow the type
+                return extras["cls"]  # type: ignore[no-any-return]
+
+    return None
+
+
 def is_basemodel(type_: type) -> bool:
     """Returns whether or not the given type is either a `BaseModel` or a union of `BaseModel`"""
     if is_union(type_):
@@ -455,7 +476,7 @@ def construct_type(*, value: object, type_: object, metadata: Optional[List[Any]
         type_ = type_.__value__  # type: ignore[unreachable]
 
     # unwrap `Annotated[T, ...]` -> `T`
-    if metadata is not None:
+    if metadata is not None and len(metadata) > 0:
         meta: tuple[Any, ...] = tuple(metadata)
     elif is_annotated_type(type_):
         meta = get_args(type_)[1:]

src/anthropic/_version.py

@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "anthropic"
-__version__ = "0.58.2"  # x-release-please-version
+__version__ = "0.59.0"  # x-release-please-version

src/anthropic/types/model.py

@@ -22,10 +22,7 @@
         "claude-4-opus-20250514",
         "claude-3-opus-latest",
         "claude-3-opus-20240229",
-        "claude-3-sonnet-20240229",
         "claude-3-haiku-20240307",
-        "claude-2.1",
-        "claude-2.0",
     ],
     str,
 ]

src/anthropic/types/model_param.py

@@ -24,10 +24,7 @@
         "claude-4-opus-20250514",
         "claude-3-opus-latest",
         "claude-3-opus-20240229",
-        "claude-3-sonnet-20240229",
         "claude-3-haiku-20240307",
-        "claude-2.1",
-        "claude-2.0",
     ],
     str,
 ]

tests/lib/test_bedrock.py

@@ -79,7 +79,7 @@ def test_messages_retries(respx_mock: MockRouter) -> None:
                 "content": "Say hello there!",
             }
         ],
-        model="anthropic.claude-3-sonnet-20240229-v1:0",
+        model="anthropic.claude-3-5-sonnet-20241022-v2:0",
     )
 
     calls = cast("list[MockRequestCall]", respx_mock.calls)
@@ -88,11 +88,11 @@ def test_messages_retries(respx_mock: MockRouter) -> None:
 
     assert (
         calls[0].request.url
-        == "https://bedrock-runtime.us-east-1.amazonaws.com/model/anthropic.claude-3-sonnet-20240229-v1:0/invoke"
+        == "https://bedrock-runtime.us-east-1.amazonaws.com/model/anthropic.claude-3-5-sonnet-20241022-v2:0/invoke"
     )
     assert (
         calls[1].request.url
-        == "https://bedrock-runtime.us-east-1.amazonaws.com/model/anthropic.claude-3-sonnet-20240229-v1:0/invoke"
+        == "https://bedrock-runtime.us-east-1.amazonaws.com/model/anthropic.claude-3-5-sonnet-20241022-v2:0/invoke"
     )
 
 
@@ -115,7 +115,7 @@ async def test_messages_retries_async(respx_mock: MockRouter) -> None:
                 "content": "Say hello there!",
             }
         ],
-        model="anthropic.claude-3-sonnet-20240229-v1:0",
+        model="anthropic.claude-3-5-sonnet-20241022-v2:0",
     )
 
     calls = cast("list[MockRequestCall]", respx_mock.calls)
@@ -124,11 +124,11 @@ async def test_messages_retries_async(respx_mock: MockRouter) -> None:
 
     assert (
         calls[0].request.url
-        == "https://bedrock-runtime.us-east-1.amazonaws.com/model/anthropic.claude-3-sonnet-20240229-v1:0/invoke"
+        == "https://bedrock-runtime.us-east-1.amazonaws.com/model/anthropic.claude-3-5-sonnet-20241022-v2:0/invoke"
     )
     assert (
         calls[1].request.url
-        == "https://bedrock-runtime.us-east-1.amazonaws.com/model/anthropic.claude-3-sonnet-20240229-v1:0/invoke"
+        == "https://bedrock-runtime.us-east-1.amazonaws.com/model/anthropic.claude-3-5-sonnet-20241022-v2:0/invoke"
     )
 
 

tests/test_models.py

@@ -1,5 +1,5 @@
 import json
-from typing import Any, Dict, List, Union, Optional, cast
+from typing import TYPE_CHECKING, Any, Dict, List, Union, Optional, cast
 from datetime import datetime, timezone
 from typing_extensions import Literal, Annotated, TypeAliasType
 
@@ -934,3 +934,30 @@ class Type2(BaseModel):
     )
     assert isinstance(model, Type1)
     assert isinstance(model.value, InnerType2)
+
+
+@pytest.mark.skipif(not PYDANTIC_V2, reason="this is only supported in pydantic v2 for now")
+def test_extra_properties() -> None:
+    class Item(BaseModel):
+        prop: int
+
+    class Model(BaseModel):
+        __pydantic_extra__: Dict[str, Item] = Field(init=False)  # pyright: ignore[reportIncompatibleVariableOverride]
+
+        other: str
+
+        if TYPE_CHECKING:
+
+            def __getattr__(self, attr: str) -> Item: ...
+
+    model = construct_type(
+        type_=Model,
+        value={
+            "a": {"prop": 1},
+            "other": "foo",
+        },
+    )
+    assert isinstance(model, Model)
+    assert model.a.prop == 1
+    assert isinstance(model.a, Item)
+    assert model.other == "foo"