release: 0.78.0

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "0.77.1"
+  ".": "0.78.0"
 }

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 34
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/anthropic%2Fanthropic-4526612d12e919de063708c05d15b78902b5a52d33a6e3eb45708c562d338b18.yml
-openapi_spec_hash: 346bef71688ca79b107cf84bc09249ac
-config_hash: 0b96ef87fc0758bbc543ffa8435baa2a
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/anthropic%2Fanthropic-267f913f89364cb8df3a758335a974b43eb98019a8ceef0a9b0a94ef34c2a3b5.yml
+openapi_spec_hash: aa708f3d3bc54992526cbf5894427446
+config_hash: d56fbaeeb3934b1a3b374590c9837ddd

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.78.0 (2026-02-05)
+
+Full Changelog: [v0.77.1...v0.78.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.77.1...v0.78.0)
+
+### Features
+
+* **api:** manual updates ([3ef1529](https://github.com/anthropics/anthropic-sdk-python/commit/3ef1529b45c55645646cc6043784f999fda088de))
+
 ## 0.77.1 (2026-02-03)
 
 Full Changelog: [v0.77.0...v0.77.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.77.0...v0.77.1)

README.md

@@ -481,7 +481,7 @@ message = client.messages.create(
             "role": "user",
         }
     ],
-    model="claude-sonnet-4-5-20250929",
+    model="claude-opus-4-6",
     metadata={},
 )
 print(message.metadata)

api.md

@@ -78,6 +78,7 @@ from anthropic.types import (
     TextDelta,
     ThinkingBlock,
     ThinkingBlockParam,
+    ThinkingConfigAdaptive,
     ThinkingConfigDisabled,
     ThinkingConfigEnabled,
     ThinkingConfigParam,
@@ -247,6 +248,11 @@ from anthropic.types.beta import (
     BetaCodeExecutionToolResultError,
     BetaCodeExecutionToolResultErrorCode,
     BetaCodeExecutionToolResultErrorParam,
+    BetaCompact20260112Edit,
+    BetaCompactionBlock,
+    BetaCompactionBlockParam,
+    BetaCompactionContentBlockDelta,
+    BetaCompactionIterationUsage,
     BetaContainer,
     BetaContainerParams,
     BetaContainerUploadBlock,
@@ -266,6 +272,7 @@ from anthropic.types.beta import (
     BetaInputJSONDelta,
     BetaInputTokensClearAtLeast,
     BetaInputTokensTrigger,
+    BetaIterationsUsage,
     BetaJSONOutputFormat,
     BetaMCPToolConfig,
     BetaMCPToolDefaultConfig,
@@ -283,6 +290,7 @@ from anthropic.types.beta import (
     BetaMemoryTool20250818ViewCommand,
     BetaMessage,
     BetaMessageDeltaUsage,
+    BetaMessageIterationUsage,
     BetaMessageParam,
     BetaMessageTokensCount,
     BetaMetadata,
@@ -328,6 +336,7 @@ from anthropic.types.beta import (
     BetaTextEditorCodeExecutionViewResultBlockParam,
     BetaThinkingBlock,
     BetaThinkingBlockParam,
+    BetaThinkingConfigAdaptive,
     BetaThinkingConfigDisabled,
     BetaThinkingConfigEnabled,
     BetaThinkingConfigParam,

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "anthropic"
-version = "0.77.1"
+version = "0.78.0"
 description = "The official Python library for the anthropic API"
 dynamic = ["readme"]
 license = "MIT"

src/anthropic/_version.py

@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "anthropic"
-__version__ = "0.77.1"  # x-release-please-version
+__version__ = "0.78.0"  # x-release-please-version

src/anthropic/lib/streaming/_beta_messages.py

@@ -20,6 +20,7 @@
     BetaThinkingEvent,
     BetaInputJsonEvent,
     BetaSignatureEvent,
+    BetaCompactionEvent,
     ParsedBetaTextEvent,
     ParsedBetaMessageStopEvent,
     ParsedBetaMessageStreamEvent,
@@ -403,6 +404,15 @@ def build_events(
                     )
                 )
             pass
+        elif event.delta.type == "compaction_delta":
+            if content_block.type == "compaction":
+                events_to_fire.append(
+                    build(
+                        BetaCompactionEvent,
+                        type="compaction",
+                        content=content_block.content,
+                    )
+                )
         else:
             # we only want exhaustive checking for linters, not at runtime
             if TYPE_CHECKING:  # type: ignore[unreachable]
@@ -512,6 +522,9 @@ def accumulate_event(
         elif event.delta.type == "signature_delta":
             if content.type == "thinking":
                 content.signature = event.delta.signature
+        elif event.delta.type == "compaction_delta":
+            if content.type == "compaction":
+                content.content = event.delta.content
         else:
             # we only want exhaustive checking for linters, not at runtime
             if TYPE_CHECKING:  # type: ignore[unreachable]
@@ -536,5 +549,7 @@ def accumulate_event(
             current_snapshot.usage.cache_read_input_tokens = event.usage.cache_read_input_tokens
         if event.usage.server_tool_use is not None:
             current_snapshot.usage.server_tool_use = event.usage.server_tool_use
+        if event.usage.iterations is not None:
+            current_snapshot.usage.iterations = event.usage.iterations
 
     return current_snapshot

src/anthropic/lib/streaming/_beta_types.py

@@ -75,6 +75,13 @@ class BetaInputJsonEvent(BaseModel):
     """
 
 
+class BetaCompactionEvent(BaseModel):
+    type: Literal["compaction"]
+
+    content: Union[str, None]
+    """The compaction content"""
+
+
 class ParsedBetaMessageStopEvent(BetaRawMessageStopEvent, GenericModel, Generic[ResponseFormatT]):
     type: Literal["message_stop"]
 
@@ -97,6 +104,7 @@ class ParsedBetaContentBlockStopEvent(BetaRawContentBlockStopEvent, GenericModel
         BetaThinkingEvent,
         BetaSignatureEvent,
         BetaInputJsonEvent,
+        BetaCompactionEvent,
         BetaRawMessageStartEvent,
         BetaRawMessageDeltaEvent,
         ParsedBetaMessageStopEvent[ResponseFormatT],