fix(anthropic): fix betas being passed to client when streaming (#9451)

hntrl · web-flow · commit b1deda21363b · 2025-11-19T09:27:13.000-08:00
diff --git a/.changeset/fuzzy-towns-listen.md b/.changeset/fuzzy-towns-listen.md
@@ -0,0 +1,5 @@
+---
+"@langchain/anthropic": patch
+---
+
+fix betas being passed to client when streaming
diff --git a/libs/providers/langchain-anthropic/src/chat_models.ts b/libs/providers/langchain-anthropic/src/chat_models.ts
@@ -1181,7 +1181,6 @@ export class ChatAnthropicMessages<
         return await this.streamingClient.messages.create(
           {
             ...rest,
-            betas,
             ...this.invocationKwargs,
             stream: true,
           } as AnthropicStreamingMessageCreateParams,

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +---
 +"@langchain/anthropic": patch
 +---
++
 +fix betas being passed to client when streaming
Original file line number	Diff line number	Diff line change
`@@ -1181,7 +1181,6 @@ export class ChatAnthropicMessages<`
`1181`	`1181`	`return await this.streamingClient.messages.create(`
`1182`	`1182`	`{`
`1183`	`1183`	`...rest,`
`1184`		`- betas,`
`1185`	`1184`	`...this.invocationKwargs,`
`1186`	`1185`	`stream: true,`
`1187`	`1186`	`} as AnthropicStreamingMessageCreateParams,`