Sliding window fix

src/core/sliding-window/index.ts

@@ -55,13 +55,15 @@ export function truncateConversationIfNeeded(
 /**
  * Calculates the maximum allowed tokens for models that support prompt caching.
  *
- * The maximum is computed as the greater of (contextWindow - 40000) and 80% of the contextWindow.
+ * The maximum is computed as the greater of (contextWindow - buffer) and 80% of the contextWindow.
  *
  * @param {ModelInfo} modelInfo - The model information containing the context window size.
  * @returns {number} The maximum number of tokens allowed for prompt caching models.
  */
 function getMaxTokensForPromptCachingModels(modelInfo: ModelInfo): number {
-	return Math.max(modelInfo.contextWindow - 40_000, modelInfo.contextWindow * 0.8)
+	// The buffer needs to be at least as large as `modelInfo.maxTokens`.
+	const buffer = modelInfo.maxTokens ? Math.max(40_000, modelInfo.maxTokens) : 40_000
+	return Math.max(modelInfo.contextWindow - buffer, modelInfo.contextWindow * 0.8)
 }
 
 /**

src/core/webview/ClineProvider.ts

@@ -2126,6 +2126,7 @@ export class ClineProvider implements vscode.WebviewViewProvider {
 
 					switch (rawModel.id) {
 						case "anthropic/claude-3.7-sonnet":
+						case "anthropic/claude-3.7-sonnet:beta":
 						case "anthropic/claude-3.5-sonnet":
 						case "anthropic/claude-3.5-sonnet:beta":
 							// NOTE: this needs to be synced with api.ts/openrouter default model info.