diff --git a/mateclaw-server/src/main/java/vip/mate/agent/BaseAgent.java b/mateclaw-server/src/main/java/vip/mate/agent/BaseAgent.java
index 475ae58e..801de3a0 100644
--- a/mateclaw-server/src/main/java/vip/mate/agent/BaseAgent.java
+++ b/mateclaw-server/src/main/java/vip/mate/agent/BaseAgent.java
@@ -59,11 +59,17 @@ public abstract class BaseAgent {
 
     /**
      * Max ReAct iterations (one reasoning + action + observation step counts as one).
-     * Default 100, hard ceiling 100 (enforced in AgentGraphBuilder so per-agent DB
+     * Default 150, hard ceiling 150 (enforced in AgentGraphBuilder so per-agent DB
      * overrides cannot exceed it).
+     *
+     * <p>Raised from 100 → 150 after the round-4 LLM-review smoke test, where a
+     * 10-model research task with browser_use + per-step verification hit the
+     * 100-iter cap with only 4/10 models completed. 150 gives roughly 50 %
+     * headroom for similar multi-step research workflows while still bounding
+     * a runaway agent.
      */
-    public static final int MAX_ITERATIONS_HARD_CEILING = 100;
-    protected int maxIterations = 100;
+    public static final int MAX_ITERATIONS_HARD_CEILING = 150;
+    protected int maxIterations = 150;
 
     /** 工作区活动目录（限制文件工具访问范围，为空不限制） */
     protected String workspaceBasePath;
diff --git a/mateclaw-server/src/main/resources/db/migration/h2/V124__agent_max_iterations_150.sql b/mateclaw-server/src/main/resources/db/migration/h2/V124__agent_max_iterations_150.sql
new file mode 100644
index 00000000..0ca37ad3
--- /dev/null
+++ b/mateclaw-server/src/main/resources/db/migration/h2/V124__agent_max_iterations_150.sql
@@ -0,0 +1,15 @@
+-- V124: bump default agents' max_iterations 100 → 150 to support longer
+-- multi-step research workflows (10+ items × per-step browser verification).
+--
+-- Calibrated from the round-4 LLM-review smoke test: a "research 10 LLMs,
+-- write a section per model, summarise, generate PPTX" task hit the previous
+-- 100-iter ceiling with only 4/10 models completed because each model takes
+-- ~25 iterations of browser_use + read_file + edit_file + progress_update.
+-- 150 gives ~50 % headroom while still bounding a runaway agent.
+--
+-- Idempotent: only updates rows still holding the previous default (100) so
+-- user-customised agents are not touched. BaseAgent's hard ceiling is also
+-- raised to 150; AgentGraphBuilder clamps DB overrides against it.
+
+UPDATE mate_agent SET max_iterations = 150
+WHERE id IN (1000000001, 1000000002, 1000000003) AND max_iterations = 100;
diff --git a/mateclaw-server/src/main/resources/db/migration/mysql/V124__agent_max_iterations_150.sql b/mateclaw-server/src/main/resources/db/migration/mysql/V124__agent_max_iterations_150.sql
new file mode 100644
index 00000000..a8a55207
--- /dev/null
+++ b/mateclaw-server/src/main/resources/db/migration/mysql/V124__agent_max_iterations_150.sql
@@ -0,0 +1,6 @@
+-- V124: bump default agents' max_iterations 100 → 150 (see H2 copy for full
+-- background). Same idempotent UPDATE — H2 and MySQL accept identical syntax
+-- for this UPDATE so no dialect-specific guard is needed.
+
+UPDATE mate_agent SET max_iterations = 150
+WHERE id IN (1000000001, 1000000002, 1000000003) AND max_iterations = 100;