diff --git a/.agents/scripts/generate-opencode-agents.sh b/.agents/scripts/generate-opencode-agents.sh
index 0a093a8451..7e11ee606f 100755
--- a/.agents/scripts/generate-opencode-agents.sh
+++ b/.agents/scripts/generate-opencode-agents.sh
@@ -240,8 +240,8 @@ MODEL_TIERS = {
     "haiku": "anthropic/claude-haiku-4-5",  # Triage, routing, simple tasks
     "sonnet": "anthropic/claude-sonnet-4-6",         # Code, review, implementation
     "opus": "anthropic/claude-opus-4-6",             # Architecture, complex reasoning
-    "flash": "google/gemini-2.5-flash", # Fast, cheap, large context
-    "pro": "google/gemini-2.5-pro",    # Capable, large context
+    "flash": "google/gemini-3-flash-preview", # Fast, cheap, large context
+    "pro": "google/gemini-3-pro-preview",    # Capable, large context
 }
 
 # Default model tier per agent (overridden by frontmatter 'model:' field)