diff --git a/routes/lab.py b/routes/lab.py
index 96ce72e..5acb674 100644
--- a/routes/lab.py
+++ b/routes/lab.py
@@ -454,7 +454,7 @@ async def get_log(batchId: str):
     state = active_batches.get(batchId)
     if not state:
         raise HTTPException(404, f"Batch {batchId} not found")
-    return {"lines": state.log_lines[-200:]}
+    return {"lines": state.log_lines[-2000:]}
 
 
 @router.get("/api/lab/debug-log")
diff --git a/ui/ai-lab.js b/ui/ai-lab.js
index 626ec83..bdea712 100644
--- a/ui/ai-lab.js
+++ b/ui/ai-lab.js
@@ -1397,9 +1397,8 @@ const AiLab = (() => {
                 const data = await res.json();
                 const logEl = document.getElementById('lab-log-content');
                 if (logEl && data.lines) {
-                    // Show last N lines
-                    const tail = data.lines.slice(-30);
-                    logEl.textContent = tail.join('\n');
+                    // Show all lines from the backend (up to 200)
+                    logEl.textContent = data.lines.join('\n');
                     logEl.scrollTop = logEl.scrollHeight;
                 }
             } catch { /* ignore */ }