diff --git a/actions/setup/js/log_parser_format.cjs b/actions/setup/js/log_parser_format.cjs
index 99384688ced..cf68ccbed05 100644
--- a/actions/setup/js/log_parser_format.cjs
+++ b/actions/setup/js/log_parser_format.cjs
@@ -585,6 +585,12 @@ function createLogParserFormatters(deps) {
     if (lastEntry?.total_cost_usd) {
       lines.push(`  Cost: $${lastEntry.total_cost_usd.toFixed(4)}`);
     }
+    if (lastEntry?.errors && Array.isArray(lastEntry.errors) && lastEntry.errors.length > 0) {
+      lines.push("  Errors:");
+      for (const error of lastEntry.errors) {
+        lines.push(`    ${error}`);
+      }
+    }
   }
 
   function generateSummaryLines(logEntries) {
diff --git a/actions/setup/js/parse_codex_log.cjs b/actions/setup/js/parse_codex_log.cjs
index 98ccf5aa102..8b2c532c344 100644
--- a/actions/setup/js/parse_codex_log.cjs
+++ b/actions/setup/js/parse_codex_log.cjs
@@ -409,14 +409,32 @@ function parseCodexJsonl(logContent) {
         });
         break;
       }
+      case "error": {
+        const rawMessage = typeof item.message === "string" ? item.message : JSON.stringify(item);
+        const message = rawMessage.trim();
+        if (message) {
+          parsedData.push({ type: "error", content: message });
+        }
+        break;
+      }
       default:
         break;
     }
   }
 
+  const errorMessages = parsedData.filter(item => item.type === "error").map(item => item.content);
+
   // Build markdown so the parser returns a truthy result and core.info has a
   // readable fallback. The step summary itself is rendered from logEntries.
-  let markdown = "<details>\n<summary>Reasoning</summary>\n\n";
+  let markdown = "";
+  if (errorMessages.length > 0) {
+    markdown += "<details>\n<summary>Errors</summary>\n\n";
+    for (const message of errorMessages) {
+      markdown += `> ${message}\n\n`;
+    }
+    markdown += "</details>\n\n";
+  }
+  markdown += "<details>\n<summary>Reasoning</summary>\n\n";
   for (const item of parsedData) {
     if (item.type === "text") {
       markdown += `${item.content}\n\n`;
@@ -456,17 +474,21 @@ function parseCodexJsonl(logContent) {
     model: model || undefined,
   });
 
-  // Surface token usage and turn count via a result entry so Statistics and the
-  // OTEL telemetry enrichment (agent-stdio.log result line) are populated.
-  if (usage) {
+  // Surface token usage, turn count, and error messages via a result entry so
+  // Statistics, the Information section's Errors list, and the OTEL telemetry
+  // enrichment (agent-stdio.log result line) are populated.
+  if (usage || errorMessages.length > 0) {
     logEntries.push({
       type: "result",
       num_turns: turnCount > 0 ? turnCount : undefined,
-      usage: {
-        input_tokens: typeof usage.input_tokens === "number" ? usage.input_tokens : undefined,
-        output_tokens: typeof usage.output_tokens === "number" ? usage.output_tokens : undefined,
-        cache_read_input_tokens: typeof usage.cached_input_tokens === "number" ? usage.cached_input_tokens : undefined,
-      },
+      usage: usage
+        ? {
+            input_tokens: typeof usage.input_tokens === "number" ? usage.input_tokens : undefined,
+            output_tokens: typeof usage.output_tokens === "number" ? usage.output_tokens : undefined,
+            cache_read_input_tokens: typeof usage.cached_input_tokens === "number" ? usage.cached_input_tokens : undefined,
+          }
+        : undefined,
+      errors: errorMessages.length > 0 ? errorMessages : undefined,
     });
   }
 
diff --git a/actions/setup/js/parse_codex_log.test.cjs b/actions/setup/js/parse_codex_log.test.cjs
index 74b0f3c37ed..df0fc4083d0 100644
--- a/actions/setup/js/parse_codex_log.test.cjs
+++ b/actions/setup/js/parse_codex_log.test.cjs
@@ -9,6 +9,7 @@ describe("parse_codex_log.cjs", () => {
   let estimateTokens;
   let formatDuration;
   let extractMCPInitialization;
+  let generateCopilotCliStyleSummary;
 
   beforeEach(async () => {
     // Mock core actions methods
@@ -38,6 +39,7 @@ describe("parse_codex_log.cjs", () => {
     truncateString = sharedModule.truncateString;
     estimateTokens = sharedModule.estimateTokens;
     formatDuration = sharedModule.formatDuration;
+    generateCopilotCliStyleSummary = sharedModule.generateCopilotCliStyleSummary;
   });
 
   describe("parseCodexLog function", () => {
@@ -833,5 +835,18 @@ ERROR: This user's access to o4-mini has been temporarily limited`;
       expect(result.markdown).toContain("Reviewed the issue");
       expect(result.markdown).toContain("Total Tokens Used:");
     });
+
+    it("surfaces item errors in the result and rendered step summary without usage", () => {
+      const errorMessage = "Model metadata unavailable; using fallback metadata.";
+      const errorOnlyLog = ['{"type":"thread.started","thread_id":"019ef8cb"}', `{"type":"item.completed","item":{"id":"item_0","type":"error","message":"${errorMessage}"}}`, '{"type":"turn.completed"}'].join("\n");
+
+      const result = parseCodexLog(errorOnlyLog);
+      const resultEntry = result.logEntries.find(e => e.type === "session.result");
+
+      expect(resultEntry?.data?.errors).toEqual([errorMessage]);
+      expect(generateCopilotCliStyleSummary(result.logEntries)).toContain(errorMessage);
+      expect(result.markdown).toContain("<summary>Errors</summary>");
+      expect(result.markdown).toContain(errorMessage);
+    });
   });
 });