Merge pull request #521 from muni-corn/claude-fix-top-p

fix(anthropic): remove `top_p` parameter for Claude 4.5 models

Author: di-sukharev

src/engine/anthropic.ts

@@ -35,9 +35,14 @@ export class AnthropicEngine implements AiEngine {
       system: systemMessage,
       messages: restMessages,
       temperature: 0,
-      top_p: 0.1,
       max_tokens: this.config.maxTokensOutput
     };
+
+    // add top_p for non-4.5 models
+    if (!/claude.*-4-5/.test(params.model)) {
+      params.top_p = 0.1;
+    }
+
     try {
       const REQUEST_TOKENS = messages
         .map((msg) => tokenCount(msg.content as string) + 4)