diff --git a/Services/AnthropicService.cs b/Services/AnthropicService.cs
index 2203001..0d39db0 100644
--- a/Services/AnthropicService.cs
+++ b/Services/AnthropicService.cs
@@ -90,7 +90,7 @@ public class AnthropicService
                     });
                     await TryWriteSse(response, "error", new { error = errMsg }, cancellationToken);
                     await FinalizeChain(chain, usage, iterations, "error", sw);
-                    await TryWriteSse(response, "done", new { }, cancellationToken);
+                    await TryWriteSse(response, "done", new { chainId = chain.ChainId }, cancellationToken);
                     return;
                 }
 
@@ -186,7 +186,7 @@ public class AnthropicService
 
             await FinalizeChain(chain, usage, iterations, "max_iterations", sw);
             await TryWriteSse(response, "error", new { error = "Max iterations erreicht" }, cancellationToken);
-            await TryWriteSse(response, "done", new { }, cancellationToken);
+            await TryWriteSse(response, "done", new { chainId = chain.ChainId }, cancellationToken);
         }
         catch (OperationCanceledException)
         {
@@ -205,7 +205,7 @@ public class AnthropicService
             });
             await FinalizeChain(chain, usage, iterations, "error", sw);
             await TryWriteSse(response, "error", new { error = errMsg }, cancellationToken);
-            await TryWriteSse(response, "done", new { }, cancellationToken);
+            await TryWriteSse(response, "done", new { chainId = chain.ChainId }, cancellationToken);
         }
     }
 
diff --git a/wwwroot/js/chat.js b/wwwroot/js/chat.js
index 1d5e81d..b0f0486 100644
--- a/wwwroot/js/chat.js
+++ b/wwwroot/js/chat.js
@@ -1,3 +1,15 @@
+// ── Helpers ──
+
+function buildMetaString(d) {
+  let meta = `Model: ${d.model || '?'} | In: ${d.inputTokens || 0} | Out: ${d.outputTokens || 0}`;
+  if (d.cacheCreationTokens > 0) meta += ` | Cache-Write: ${d.cacheCreationTokens}`;
+  if (d.cacheReadTokens > 0) meta += ` | Cache-Read: ${d.cacheReadTokens}`;
+  if ((d.iterations || 0) > 1) meta += ` | Iterations: ${d.iterations}`;
+  if (d.durationMs) meta += ` | ${(d.durationMs / 1000).toFixed(1)}s`;
+  if (d.stopReason && d.stopReason !== 'end_turn' && d.stopReason !== 'tool_use') meta += ` | Stop: ${d.stopReason}`;
+  return meta;
+}
+
 // ── Chat State ──
 
 const messages = [];
@@ -135,11 +147,14 @@ async function sendMessage() {
               if (data.stopReason === 'max_tokens') {
                 addWarningBubble('⚠️ Antwort wurde abgeschnitten (max_tokens erreicht). Bitte frage nach dem Rest.', true);
               }
-              let meta = `Model: ${data.model || '?'} | In: ${data.inputTokens || 0} | Out: ${data.outputTokens || 0}`;
-              if (data.iterations > 1) meta += ` | Iterations: ${data.iterations}`;
-              if (data.durationMs) meta += ` | ${(data.durationMs / 1000).toFixed(1)}s`;
-              if (data.stopReason && data.stopReason !== 'end_turn' && data.stopReason !== 'tool_use') meta += ` | Stop: ${data.stopReason}`;
-              setMeta(meta);
+              if (data.model) {
+                setMeta(buildMetaString(data));
+              } else if (data.chainId) {
+                // Leeres done (z.B. nach error/max_iterations) – Chain-Daten nachladen
+                apiGetChain(data.chainId).then(chain => {
+                  if (chain) setMeta(buildMetaString(chain));
+                }).catch(() => {});
+              }
               break;
           }
           eventType = null;
diff --git a/wwwroot/js/pages/chat-page.js b/wwwroot/js/pages/chat-page.js
index c25a878..6236640 100644
--- a/wwwroot/js/pages/chat-page.js
+++ b/wwwroot/js/pages/chat-page.js
@@ -25,15 +25,8 @@ function startStreamingPoll(sessionId, sendBtn, chainId) {
         const cid = _recoveryChainId || status.chainId;
         if (cid) {
           const chain = await apiGetChain(cid);
-          if (chain) {
-            let meta = `Model: ${chain.model || '?'} | In: ${chain.inputTokens || 0} | Out: ${chain.outputTokens || 0}`;
-            if (chain.iterations > 1) meta += ` | Iterations: ${chain.iterations}`;
-            if (chain.durationMs) meta += ` | ${(chain.durationMs / 1000).toFixed(1)}s`;
-            if (chain.stopReason && chain.stopReason !== 'end_turn' && chain.stopReason !== 'tool_use') meta += ` | Stop: ${chain.stopReason}`;
-            setMeta(meta);
-          } else {
-            setMeta('Bereit');
-          }
+          if (chain) setMeta(buildMetaString(chain));
+          else setMeta('Bereit');
         } else {
           setMeta('Bereit');
         }