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new 97ec93d3 [integrations][anthropic] Update the stale default model to
claude-sonnet-4-6 (#1039)
97ec93d3 is described below
commit 97ec93d35d7517ee3e3791ca8d6628f76be462df
Author: Weiqing Yang <[email protected]>
AuthorDate: Mon Aug 31 02:01:24 2026 -0700
[integrations][anthropic] Update the stale default model to
claude-sonnet-4-6 (#1039)
Generated-by: Claude Code 2.1.251 (Claude Opus 5)
---------
Co-authored-by: weiqingy <[email protected]>
---
docs/content/docs/development/chat_models.md | 15 +++++++--------
.../integration/test/ChatModelIntegrationAgent.java | 2 +-
.../chatmodels/anthropic/AnthropicChatModelSetup.java | 6 +++---
.../anthropic/AnthropicChatModelConnectionTest.java | 5 ++++-
.../chatmodels/anthropic/AnthropicChatModelSetupTest.java | 2 +-
.../chat_models/anthropic/anthropic_chat_model.py | 4 ++--
.../anthropic/tests/test_anthropic_chat_model.py | 3 +--
.../anthropic/tests/test_anthropic_response_parsing.py | 3 ++-
8 files changed, 21 insertions(+), 19 deletions(-)
diff --git a/docs/content/docs/development/chat_models.md
b/docs/content/docs/development/chat_models.md
index 9152136f..d9a21f96 100644
--- a/docs/content/docs/development/chat_models.md
+++ b/docs/content/docs/development/chat_models.md
@@ -287,7 +287,7 @@ Anthropic provides cloud-based chat models featuring the
Claude family, known fo
| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `connection` | str | Required | Reference to connection method name |
-| `model` | str | `"claude-sonnet-4-20250514"` | Name of the chat model to use
|
+| `model` | str | `"claude-sonnet-4-6"` | Name of the chat model to use |
| `prompt` | Prompt \| str | None | Prompt template or reference to prompt
resource |
| `tools` | List[str] | None | List of tool names available to the model |
| `max_tokens` | int | `1024` | Maximum number of tokens to generate |
@@ -302,7 +302,7 @@ Anthropic provides cloud-based chat models featuring the
Claude family, known fo
| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `connection` | String | Required | Reference to connection method name |
-| `model` | String | `"claude-sonnet-4-20250514"` | Name of the chat model to
use |
+| `model` | String | `"claude-sonnet-4-6"` | Name of the chat model to use |
| `prompt` | Prompt \| String | None | Prompt template or reference to prompt
resource |
| `tools` | List<String> | None | List of tool names available to the model |
| `max_tokens` | long | `1024` | Maximum number of tokens to generate |
@@ -339,7 +339,7 @@ class MyAgent(Agent):
return ResourceDescriptor(
clazz=ResourceName.ChatModel.ANTHROPIC_SETUP,
connection="anthropic_connection",
- model="claude-sonnet-4-20250514",
+ model="claude-sonnet-4-6",
max_tokens=2048,
temperature=0.7
)
@@ -364,7 +364,7 @@ public class MyAgent extends Agent {
public static ResourceDescriptor anthropicChatModel() {
return
ResourceDescriptor.Builder.newBuilder(ResourceName.ChatModel.ANTHROPIC_SETUP)
.addInitialArgument("connection", "anthropicConnection")
- .addInitialArgument("model", "claude-sonnet-4-20250514")
+ .addInitialArgument("model", "claude-sonnet-4-6")
.addInitialArgument("temperature", 0.7d)
.addInitialArgument("max_tokens", 2048)
.build();
@@ -382,10 +382,9 @@ public class MyAgent extends Agent {
Visit the [Anthropic Models
documentation](https://docs.anthropic.com/en/docs/about-claude/models) for the
complete and up-to-date list of available chat models.
Some popular options include:
-- **Claude Sonnet 4.5** (claude-sonnet-4-5-20250929)
-- **Claude Sonnet 4** (claude-sonnet-4-20250514)
-- **Claude Sonnet 3.7** (claude-3-7-sonnet-20250219)
-- **Claude Opus 4.1** (claude-opus-4-1-20250805)
+- **Claude Opus 4.6** (claude-opus-4-6)
+- **Claude Sonnet 4.6** (claude-sonnet-4-6)
+- **Claude Haiku 4.5** (claude-haiku-4-5)
{{< hint warning >}}
Model availability and specifications may change. Always check the official
Anthropic documentation for the latest information before implementing in
production.
diff --git
a/e2e-test/flink-agents-end-to-end-tests-integration/src/test/java/org/apache/flink/agents/integration/test/ChatModelIntegrationAgent.java
b/e2e-test/flink-agents-end-to-end-tests-integration/src/test/java/org/apache/flink/agents/integration/test/ChatModelIntegrationAgent.java
index 2ad6bacf..8dcaf9ef 100644
---
a/e2e-test/flink-agents-end-to-end-tests-integration/src/test/java/org/apache/flink/agents/integration/test/ChatModelIntegrationAgent.java
+++
b/e2e-test/flink-agents-end-to-end-tests-integration/src/test/java/org/apache/flink/agents/integration/test/ChatModelIntegrationAgent.java
@@ -123,7 +123,7 @@ public class ChatModelIntegrationAgent extends Agent {
} else if (provider.equals("ANTHROPIC")) {
return
ResourceDescriptor.Builder.newBuilder(ResourceName.ChatModel.ANTHROPIC_SETUP)
.addInitialArgument("connection", "chatModelConnection")
- .addInitialArgument("model", "claude-sonnet-4-20250514")
+ .addInitialArgument("model", "claude-sonnet-4-6")
.addInitialArgument(
"tools",
List.of("calculateBMI", "convertTemperature",
"createRandomNumber"))
diff --git
a/integrations/chat-models/anthropic/src/main/java/org/apache/flink/agents/integrations/chatmodels/anthropic/AnthropicChatModelSetup.java
b/integrations/chat-models/anthropic/src/main/java/org/apache/flink/agents/integrations/chatmodels/anthropic/AnthropicChatModelSetup.java
index b7636f8f..d58befb6 100644
---
a/integrations/chat-models/anthropic/src/main/java/org/apache/flink/agents/integrations/chatmodels/anthropic/AnthropicChatModelSetup.java
+++
b/integrations/chat-models/anthropic/src/main/java/org/apache/flink/agents/integrations/chatmodels/anthropic/AnthropicChatModelSetup.java
@@ -37,7 +37,7 @@ import java.util.Optional;
*
* <ul>
* <li><b>connection</b> (required): Name of the
AnthropicChatModelConnection resource
- * <li><b>model</b> (optional): Model name (default:
claude-sonnet-4-20250514)
+ * <li><b>model</b> (optional): Model name (default: claude-sonnet-4-6)
* <li><b>temperature</b> (optional): Sampling temperature 0.0-1.0 (default:
0.1)
* <li><b>max_tokens</b> (optional): Maximum tokens in response (default:
1024)
* <li><b>json_prefill</b> (optional): When true, prefills assistant
response with "{" to enforce
@@ -60,7 +60,7 @@ import java.util.Optional;
* public static ResourceDesc anthropic() {
* return
ResourceDescriptor.Builder.newBuilder(AnthropicChatModelSetup.class.getName())
* .addInitialArgument("connection", "myAnthropicConnection")
- * .addInitialArgument("model", "claude-sonnet-4-20250514")
+ * .addInitialArgument("model", "claude-sonnet-4-6")
* .addInitialArgument("temperature", 0.3d)
* .addInitialArgument("max_tokens", 2048)
* .addInitialArgument("strict_tools", true)
@@ -75,7 +75,7 @@ import java.util.Optional;
*/
public class AnthropicChatModelSetup extends BaseChatModelSetup {
- private static final String DEFAULT_MODEL = "claude-sonnet-4-20250514";
+ private static final String DEFAULT_MODEL = "claude-sonnet-4-6";
private static final double DEFAULT_TEMPERATURE = 0.1d;
private static final long DEFAULT_MAX_TOKENS = 1024L;
private static final boolean DEFAULT_JSON_PREFILL = false;
diff --git
a/integrations/chat-models/anthropic/src/test/java/org/apache/flink/agents/integrations/chatmodels/anthropic/AnthropicChatModelConnectionTest.java
b/integrations/chat-models/anthropic/src/test/java/org/apache/flink/agents/integrations/chatmodels/anthropic/AnthropicChatModelConnectionTest.java
index 003052da..bc63533d 100644
---
a/integrations/chat-models/anthropic/src/test/java/org/apache/flink/agents/integrations/chatmodels/anthropic/AnthropicChatModelConnectionTest.java
+++
b/integrations/chat-models/anthropic/src/test/java/org/apache/flink/agents/integrations/chatmodels/anthropic/AnthropicChatModelConnectionTest.java
@@ -216,7 +216,10 @@ class AnthropicChatModelConnectionTest {
*/
private static final String CAPABLE_MODEL = "claude-sonnet-4-5";
- /** The connection's own default model, which predates the
structured-output cutoff. */
+ /**
+ * A model the provider does not document native structured-output support
for, predating the
+ * cutoff.
+ */
private static final String INCAPABLE_MODEL = "claude-sonnet-4-20250514";
/**
diff --git
a/integrations/chat-models/anthropic/src/test/java/org/apache/flink/agents/integrations/chatmodels/anthropic/AnthropicChatModelSetupTest.java
b/integrations/chat-models/anthropic/src/test/java/org/apache/flink/agents/integrations/chatmodels/anthropic/AnthropicChatModelSetupTest.java
index 8cd126ab..f5e6ddf6 100644
---
a/integrations/chat-models/anthropic/src/test/java/org/apache/flink/agents/integrations/chatmodels/anthropic/AnthropicChatModelSetupTest.java
+++
b/integrations/chat-models/anthropic/src/test/java/org/apache/flink/agents/integrations/chatmodels/anthropic/AnthropicChatModelSetupTest.java
@@ -43,7 +43,7 @@ class AnthropicChatModelSetupTest {
Map<String, Object> params =
new AnthropicChatModelSetup(base().build(),
NOOP).getParameters();
- assertThat(params).containsEntry("model", "claude-sonnet-4-20250514");
+ assertThat(params).containsEntry("model", "claude-sonnet-4-6");
assertThat(params).containsEntry("temperature", 0.1d);
assertThat(params).containsEntry("max_tokens", 1024L);
assertThat(params).containsEntry("strict_tools", false);
diff --git
a/python/flink_agents/integrations/chat_models/anthropic/anthropic_chat_model.py
b/python/flink_agents/integrations/chat_models/anthropic/anthropic_chat_model.py
index 563c3c21..dde0a894 100644
---
a/python/flink_agents/integrations/chat_models/anthropic/anthropic_chat_model.py
+++
b/python/flink_agents/integrations/chat_models/anthropic/anthropic_chat_model.py
@@ -467,7 +467,7 @@ class AnthropicChatModelConnection(BaseChatModelConnection):
self._client = None
-DEFAULT_ANTHROPIC_MODEL = "claude-sonnet-4-20250514"
+DEFAULT_ANTHROPIC_MODEL = "claude-sonnet-4-6"
DEFAULT_MAX_TOKENS = 1024
DEFAULT_TEMPERATURE = 0.1
DEFAULT_JSON_PREFILL = False
@@ -481,7 +481,7 @@ class AnthropicChatModelSetup(BaseChatModelSetup):
connection : str
Name of the referenced connection. (Inherited from BaseChatModelSetup)
model : str
- Specifies the Anthropic model to use. Defaults to
claude-sonnet-4-20250514
+ Specifies the Anthropic model to use. Defaults to
``DEFAULT_ANTHROPIC_MODEL``
when omitted via ``__init__``. (Inherited from BaseChatModelSetup)
prompt : Optional[Union[Prompt, str]
Prompt template or string for the model. (Inherited from
BaseChatModelSetup)
diff --git
a/python/flink_agents/integrations/chat_models/anthropic/tests/test_anthropic_chat_model.py
b/python/flink_agents/integrations/chat_models/anthropic/tests/test_anthropic_chat_model.py
index c6a6e8f5..fc0fe066 100644
---
a/python/flink_agents/integrations/chat_models/anthropic/tests/test_anthropic_chat_model.py
+++
b/python/flink_agents/integrations/chat_models/anthropic/tests/test_anthropic_chat_model.py
@@ -25,7 +25,6 @@ from flink_agents.api.resource import Resource, ResourceType
from flink_agents.api.resource_context import ResourceContext
from flink_agents.api.tools.tool import Tool
from flink_agents.integrations.chat_models.anthropic.anthropic_chat_model
import (
- DEFAULT_ANTHROPIC_MODEL,
AnthropicChatModelConnection,
AnthropicChatModelSetup,
)
@@ -116,4 +115,4 @@ def test_model_field_roundtrip() -> None:
def test_default_model_when_omitted() -> None:
"""Verify per-integration default applies when `model` is omitted from
__init__."""
setup = AnthropicChatModelSetup(connection="conn")
- assert setup.model == DEFAULT_ANTHROPIC_MODEL
+ assert setup.model == "claude-sonnet-4-6"
diff --git
a/python/flink_agents/integrations/chat_models/anthropic/tests/test_anthropic_response_parsing.py
b/python/flink_agents/integrations/chat_models/anthropic/tests/test_anthropic_response_parsing.py
index 22c98b3d..0577a32f 100644
---
a/python/flink_agents/integrations/chat_models/anthropic/tests/test_anthropic_response_parsing.py
+++
b/python/flink_agents/integrations/chat_models/anthropic/tests/test_anthropic_response_parsing.py
@@ -200,7 +200,8 @@ class _Labelled(BaseModel):
# even with the output_config suppression removed.
_CAPABLE_MODEL = "claude-sonnet-4-5"
-# The default model this integration ships with, which predates the cutoff.
+# A model the provider does not document native structured-output support for,
+# predating the cutoff.
_INCAPABLE_MODEL = "claude-sonnet-4-20250514"
# The models the provider documents native structured-output support for, in
the order
