diff --git a/src/index.ts b/src/index.ts
index d4b17de..58a7dad 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -735,7 +735,7 @@ Translate (v0.4 — multi-language draft clone):
              Options:
                --from <lang>        Source language (default: "auto")
                --api-key <key>      Override ANTHROPIC_API_KEY env var
-               --model <id>         Model (default: claude-haiku-4-5-20251001)
+               --model <id>         Model (default: claude-haiku-5-5)
                --dry-run            List what would be translated, no API call
 
 Migrate (v0.4 — survive JianYing/CapCut version jumps):
diff --git a/src/translate.ts b/src/translate.ts
index 3778741..8e62429 100644
--- a/src/translate.ts
+++ b/src/translate.ts
@@ -6,7 +6,7 @@ export interface TranslateOptions {
   to: string; // target language (free-form, e.g. "Spanish", "de", "Mandarin Chinese")
   from?: string; // source language; default "auto"
   apiKey?: string; // overrides ANTHROPIC_API_KEY env var
-  model?: string; // default "claude-haiku-4-5-20251001"
+  model?: string; // default "claude-haiku-5-5"
   dryRun?: boolean;
   outPath: string; // required: where to write the translated draft
 }
@@ -55,7 +55,7 @@ export async function translateDraft(draft: Draft, opts: TranslateOptions): Prom
         "Get one at https://console.anthropic.com/. (Use --dry-run to see what would be translated without calling the API.)",
     );
   }
-  const model = opts.model ?? "claude-haiku-4-5-20251001";
+  const model = opts.model ?? "claude-haiku-5-5";
 
   const translations = await callAnthropicBatch(
     apiKey,
@@ -112,7 +112,8 @@ async function callAnthropicBatch(
     },
     body: JSON.stringify({
       model,
-      max_tokens: 4096,
+      max_tokens: 16000,
+      output_config: { effort: "low" },
       messages: [{ role: "user", content: prompt }],
     }),
   });