diff --git a/.opencode/agents/ca-architecture-guard.md b/.opencode/agents/ca-architecture-guard.md
index 2667528c07..3e4d7ca740 100644
--- a/.opencode/agents/ca-architecture-guard.md
+++ b/.opencode/agents/ca-architecture-guard.md
@@ -8,7 +8,7 @@ description: >
 mode: subagent
 hidden: true
 temperature: 0.1
-model: google/gemini-3.1-pro
+model: google/gemini-2.5-pro
 color: warning
 permission:
   edit: deny
diff --git a/.opencode/agents/ca-bug-hunter.md b/.opencode/agents/ca-bug-hunter.md
index c111ac6605..cb26dbbe91 100644
--- a/.opencode/agents/ca-bug-hunter.md
+++ b/.opencode/agents/ca-bug-hunter.md
@@ -12,7 +12,7 @@ description: >
 mode: subagent
 hidden: true
 temperature: 0.1
-model: google/gemini-3.1-pro
+model: google/gemini-2.5-pro
 color: error
 permission:
   edit: deny
diff --git a/.opencode/agents/ca-ref-reader.md b/.opencode/agents/ca-ref-reader.md
index 80cbb8389a..d1fe347bb1 100644
--- a/.opencode/agents/ca-ref-reader.md
+++ b/.opencode/agents/ca-ref-reader.md
@@ -7,7 +7,7 @@ description: >
 mode: subagent
 hidden: true
 temperature: 0.0
-model: google/gemini-3.1-pro
+model: google/gemini-2.5-pro
 color: info
 permission:
   edit: deny
diff --git a/.opencode/agents/ca-spec-reader.md b/.opencode/agents/ca-spec-reader.md
index 7eed111632..3480cea978 100644
--- a/.opencode/agents/ca-spec-reader.md
+++ b/.opencode/agents/ca-spec-reader.md
@@ -6,7 +6,7 @@ description: >
 mode: subagent
 hidden: true
 temperature: 0.0
-model: google/gemini-3.1-pro
+model: google/gemini-2.5-pro
 color: info
 permission:
   edit: deny
diff --git a/.opencode/agents/ca-test-infra-improver.md b/.opencode/agents/ca-test-infra-improver.md
index d9443852dd..a73855cd5c 100644
--- a/.opencode/agents/ca-test-infra-improver.md
+++ b/.opencode/agents/ca-test-infra-improver.md
@@ -12,7 +12,7 @@ description: >
 mode: subagent
 hidden: true
 temperature: 0.2
-model: google/gemini-3.1-pro
+model: google/gemini-2.5-pro
 color: "#2ECC71"
 permission:
   edit: deny