fix: restore claude-opus-4-5-20251101 prompt caching and remove dead code

hannesrudolph · hannesrudolph · commit c810bc5e240f · 2025-11-26T12:37:41.000-07:00
- Add claude-opus-4-5-20251101 back to switch statements for prompt caching support
- Remove unused lastThinkingSignature property and getThinkingSignature() method
diff --git a/src/api/providers/anthropic-vertex.ts b/src/api/providers/anthropic-vertex.ts
@@ -68,7 +68,6 @@ function filterNonAnthropicBlocks(messages: Anthropic.Messages.MessageParam[]):
 export class AnthropicVertexHandler extends BaseProvider implements SingleCompletionHandler {
 	protected options: ApiHandlerOptions
 	private client: AnthropicVertex
-	private lastThinkingSignature?: string
 
 	constructor(options: ApiHandlerOptions) {
 		super()
@@ -107,9 +106,6 @@ export class AnthropicVertexHandler extends BaseProvider implements SingleComple
 		messages: Anthropic.Messages.MessageParam[],
 		metadata?: ApiHandlerCreateMessageMetadata,
 	): ApiStream {
-		// Reset thinking signature for this request
-		this.lastThinkingSignature = undefined
-
 		let {
 			id,
 			info: { supportsPromptCache },
@@ -274,12 +270,4 @@ export class AnthropicVertexHandler extends BaseProvider implements SingleComple
 			throw error
 		}
 	}
-
-	/**
-	 * Returns the thinking signature from the last response, if available.
-	 * This signature is used for multi-turn extended thinking continuity.
-	 */
-	public getThinkingSignature(): string | undefined {
-		return this.lastThinkingSignature
-	}
 }
diff --git a/src/api/providers/anthropic.ts b/src/api/providers/anthropic.ts
@@ -66,7 +66,6 @@ function filterNonAnthropicBlocks(messages: Anthropic.Messages.MessageParam[]):
 export class AnthropicHandler extends BaseProvider implements SingleCompletionHandler {
 	private options: ApiHandlerOptions
 	private client: Anthropic
-	private lastThinkingSignature?: string
 
 	constructor(options: ApiHandlerOptions) {
 		super()
@@ -86,9 +85,6 @@ export class AnthropicHandler extends BaseProvider implements SingleCompletionHa
 		messages: Anthropic.Messages.MessageParam[],
 		metadata?: ApiHandlerCreateMessageMetadata,
 	): ApiStream {
-		// Reset thinking signature for this request
-		this.lastThinkingSignature = undefined
-
 		let stream: AnthropicStream<Anthropic.Messages.RawMessageStreamEvent>
 		const cacheControl: CacheControlEphemeral = { type: "ephemeral" }
 		let { id: modelId, betas = [], maxTokens, temperature, reasoning: thinking } = this.getModel()
@@ -107,6 +103,7 @@ export class AnthropicHandler extends BaseProvider implements SingleCompletionHa
 		switch (modelId) {
 			case "claude-sonnet-4-5":
 			case "claude-sonnet-4-20250514":
+			case "claude-opus-4-5-20251101":
 			case "claude-opus-4-1-20250805":
 			case "claude-opus-4-20250514":
 			case "claude-3-7-sonnet-20250219":
@@ -168,6 +165,7 @@ export class AnthropicHandler extends BaseProvider implements SingleCompletionHa
 						switch (modelId) {
 							case "claude-sonnet-4-5":
 							case "claude-sonnet-4-20250514":
+							case "claude-opus-4-5-20251101":
 							case "claude-opus-4-1-20250805":
 							case "claude-opus-4-20250514":
 							case "claude-3-7-sonnet-20250219":
@@ -382,12 +380,4 @@ export class AnthropicHandler extends BaseProvider implements SingleCompletionHa
 			return super.countTokens(content)
 		}
 	}
-
-	/**
-	 * Returns the thinking signature from the last response, if available.
-	 * This signature is used for multi-turn extended thinking continuity.
-	 */
-	public getThinkingSignature(): string | undefined {
-		return this.lastThinkingSignature
-	}
 }
