diff --git a/.config/opencode/agent/subagents/build.md b/.config/opencode/agent/subagents/build.md
index f7a1cf3..7543ded 100644
--- a/.config/opencode/agent/subagents/build.md
+++ b/.config/opencode/agent/subagents/build.md
@@ -1,7 +1,7 @@
 ---
 description: "Build and validation agent"
 mode: subagent
-model: opencode/minimax-m2.5-free
+model: github-copilot/gpt-5-mini
 temperature: 0.1
 permission:
   bash:
diff --git a/.config/opencode/agent/subagents/coder.md b/.config/opencode/agent/subagents/coder.md
index 3516935..ee8eb79 100644
--- a/.config/opencode/agent/subagents/coder.md
+++ b/.config/opencode/agent/subagents/coder.md
@@ -1,7 +1,7 @@
 ---
 description: "Executes coding subtasks in sequence, ensuring completion as specified"
 mode: subagent
-model: opencode/minimax-m2.5-free
+model: github-copilot/gpt-5-mini
 temperature: 0.1
 permission:
   bash: deny
diff --git a/.config/opencode/agent/subagents/context.md b/.config/opencode/agent/subagents/context.md
index bfb58e1..9b21af3 100644
--- a/.config/opencode/agent/subagents/context.md
+++ b/.config/opencode/agent/subagents/context.md
@@ -1,7 +1,7 @@
 ---
 description: "Language-agnostic codebase pattern analyst agent"
 mode: subagent
-model: opencode/minimax-m2.5-free
+model: github-copilot/gpt-5-mini
 temperature: 0.1
 permission:
   bash: deny
diff --git a/.config/opencode/agent/subagents/documentation.md b/.config/opencode/agent/subagents/documentation.md
index db64991..a6cb894 100644
--- a/.config/opencode/agent/subagents/documentation.md
+++ b/.config/opencode/agent/subagents/documentation.md
@@ -1,7 +1,7 @@
 ---
 description: "Universal code documentation subagent: inserts/updates doc comments for functions, methods, and modules in any language."
 mode: subagent
-model: opencode/minimax-m2.5-free
+model: github-copilot/gpt-5-mini
 temperature: 0.2
 permission:
   bash: deny
diff --git a/.config/opencode/agent/subagents/research.md b/.config/opencode/agent/subagents/research.md
index 6252dca..98f5eea 100644
--- a/.config/opencode/agent/subagents/research.md
+++ b/.config/opencode/agent/subagents/research.md
@@ -1,7 +1,7 @@
 ---
 description: "Research subagent for information gathering and summarization"
 mode: subagent
-model: opencode/minimax-m2.5-free
+model: github-copilot/gpt-5-mini
 temperature: 0.1
 permission:
   bash:
diff --git a/.config/opencode/agent/subagents/reviewer.md b/.config/opencode/agent/subagents/reviewer.md
index 0137a67..69408b8 100644
--- a/.config/opencode/agent/subagents/reviewer.md
+++ b/.config/opencode/agent/subagents/reviewer.md
@@ -1,7 +1,7 @@
 ---
 description: "Comprehensive code review, security, and quality assurance subagent"
 mode: subagent
-model: opencode/minimax-m2.5-free
+model: github-copilot/gpt-5-mini
 temperature: 0.1
 permission:
   bash: deny
diff --git a/.config/opencode/agent/subagents/task-manager.md b/.config/opencode/agent/subagents/task-manager.md
index aa3428c..3dace6d 100644
--- a/.config/opencode/agent/subagents/task-manager.md
+++ b/.config/opencode/agent/subagents/task-manager.md
@@ -1,7 +1,7 @@
 ---
 description: "Breaks down complex features into small, verifiable subtasks"
 mode: subagent
-model: opencode/minimax-m2.5-free
+model: github-copilot/gpt-5-mini
 temperature: 0.1
 permission:
   bash: deny
diff --git a/.config/opencode/agent/subagents/tester.md b/.config/opencode/agent/subagents/tester.md
index c177162..7bc4ad2 100644
--- a/.config/opencode/agent/subagents/tester.md
+++ b/.config/opencode/agent/subagents/tester.md
@@ -1,7 +1,7 @@
 ---
 description: "Test authoring and TDD agent"
 mode: subagent
-model: opencode/minimax-m2.5-free
+model: github-copilot/gpt-5-mini
 temperature: 0.1
 permission:
   bash:
diff --git a/.config/opencode/opencode.json b/.config/opencode/opencode.json
index cbed8ec..483a5c6 100644
--- a/.config/opencode/opencode.json
+++ b/.config/opencode/opencode.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://opencode.ai/config.json",
   "theme": "tokyonight",
-  "model": "opencode/minimax-m2.5-free",
+  "model": "github-copilot/gpt-5-mini",
   "lsp": {
     "clangd": {
       "disabled": true