diff --git a/Makefile b/Makefile
index c07c652..678bde4 100644
--- a/Makefile
+++ b/Makefile
@@ -26,6 +26,10 @@ WORKSPACE          ?=
 CHAT_ONLY_WORKSPACE ?= true
 CONFIG_DIRS        ?=
 
+# ── OpenCode 模型設定 ────────────────────
+OPENCODE_MODEL       ?= cursor/claude-4.6-sonnet-medium
+OPENCODE_SMALL_MODEL ?= cursor/gpt-5.4-nano-medium
+
 # ── Cursor / Claude Code（~/.claude）────────────────
 CLAUDE_SETTINGS                ?= $(HOME)/.claude/settings.json
 CLAUDE_JSON                    ?= $(HOME)/.claude.json
@@ -103,14 +107,14 @@ opencode: build
 	@if [ ! -f "$(OPENCODE_CONFIG)" ]; then \
 		echo "找不到 $(OPENCODE_CONFIG)，建立新設定檔"; \
 		mkdir -p $$(dirname "$(OPENCODE_CONFIG)"); \
-		printf '{\n  "provider": {\n    "cursor": {\n      "npm": "@ai-sdk/openai-compatible",\n      "name": "Cursor Agent",\n      "options": {\n        "baseURL": "http://$(HOST):$(PORT)/v1",\n        "apiKey": "unused"\n      },\n      "models": { "auto": { "name": "Cursor Auto" } }\n    }\n  }\n}\n' > "$(OPENCODE_CONFIG)"; \
+		printf '{\n  "model": "$(OPENCODE_MODEL)",\n  "small_model": "$(OPENCODE_SMALL_MODEL)",\n  "provider": {\n    "cursor": {\n      "npm": "@ai-sdk/openai-compatible",\n      "name": "Cursor Agent",\n      "options": {\n        "baseURL": "http://$(HOST):$(PORT)/v1",\n        "apiKey": "unused"\n      },\n      "models": { "auto": { "name": "Cursor Auto" } }\n    }\n  }\n}\n' > "$(OPENCODE_CONFIG)"; \
 		echo "已建立 $(OPENCODE_CONFIG)"; \
 	elif [ -n "$(API_KEY)" ]; then \
-		jq '.provider.cursor.options.baseURL = "http://$(HOST):$(PORT)/v1" | .provider.cursor.options.apiKey = "$(API_KEY)"' "$(OPENCODE_CONFIG)" > "$(OPENCODE_CONFIG).tmp" && mv "$(OPENCODE_CONFIG).tmp" "$(OPENCODE_CONFIG)"; \
-		echo "已更新 $(OPENCODE_CONFIG)（baseURL → http://$(HOST):$(PORT)/v1，apiKey 已設定）"; \
+		jq '.model = "$(OPENCODE_MODEL)" | .small_model = "$(OPENCODE_SMALL_MODEL)" | .provider.cursor.options.baseURL = "http://$(HOST):$(PORT)/v1" | .provider.cursor.options.apiKey = "$(API_KEY)"' "$(OPENCODE_CONFIG)" > "$(OPENCODE_CONFIG).tmp" && mv "$(OPENCODE_CONFIG).tmp" "$(OPENCODE_CONFIG)"; \
+		echo "已更新 $(OPENCODE_CONFIG)（model=$(OPENCODE_MODEL), small_model=$(OPENCODE_SMALL_MODEL), baseURL → http://$(HOST):$(PORT)/v1，apiKey 已設定）"; \
 	else \
-		jq '.provider.cursor.options.baseURL = "http://$(HOST):$(PORT)/v1"' "$(OPENCODE_CONFIG)" > "$(OPENCODE_CONFIG).tmp" && mv "$(OPENCODE_CONFIG).tmp" "$(OPENCODE_CONFIG)"; \
-		echo "已更新 $(OPENCODE_CONFIG)（baseURL → http://$(HOST):$(PORT)/v1）"; \
+		jq '.model = "$(OPENCODE_MODEL)" | .small_model = "$(OPENCODE_SMALL_MODEL)" | .provider.cursor.options.baseURL = "http://$(HOST):$(PORT)/v1"' "$(OPENCODE_CONFIG)" > "$(OPENCODE_CONFIG).tmp" && mv "$(OPENCODE_CONFIG).tmp" "$(OPENCODE_CONFIG)"; \
+		echo "已更新 $(OPENCODE_CONFIG)（model=$(OPENCODE_MODEL), small_model=$(OPENCODE_SMALL_MODEL), baseURL → http://$(HOST):$(PORT)/v1）"; \
 	fi
 
 ## 啟動代理並用 curl 同步模型列表到 opencode.json