diff --git a/pkg/backend/gemini.go b/pkg/backend/gemini.go
new file mode 100644
index 0000000..b6ba724
--- /dev/null
+++ b/pkg/backend/gemini.go
@@ -0,0 +1,29 @@
+package backend
+
+import "os"
+
+const (
+	geminiBaseURL     = "https://generativelanguage.googleapis.com/v1beta/openai/"
+	geminiDefaultModel = "gemini-2.5-flash-preview-05-20"
+)
+
+// NewGemini constructs an OpenAI-compatible backend pointed at Google AI Studio.
+// apiKey is the Google AI Studio key (OLLIE_GEMINI_KEY).
+// If model is empty the default model is used.
+func NewGemini(apiKey string) (*OpenAIBackend, error) {
+	b, err := NewOpenAI("gemini", geminiBaseURL, apiKey)
+	if err != nil {
+		return nil, err
+	}
+	b.model = geminiDefaultModel
+	return b, nil
+}
+
+// geminiKey returns the API key from OLLIE_GEMINI_KEY, falling back to
+// OLLIE_OPENAI_KEY so existing env files that set the generic key still work.
+func geminiKey() string {
+	if k := os.Getenv("OLLIE_GEMINI_KEY"); k != "" {
+		return k
+	}
+	return os.Getenv("OLLIE_OPENAI_KEY")
+}
diff --git a/pkg/backend/new.go b/pkg/backend/new.go
index d2fb7ab..937a705 100644
--- a/pkg/backend/new.go
+++ b/pkg/backend/new.go
@@ -45,11 +45,12 @@ func loadEnvFile(path string) {
 // so the file acts as a default; variables already set in the environment take
 // precedence.
 //
-//	OLLIE_BACKEND        ollama | openai | openrouter | anthropic | copilot | kiro (default: ollama)
+//	OLLIE_BACKEND        ollama | openai | openrouter | anthropic | copilot | kiro | gemini
 //	OLLIE_OLLAMA_URL     base URL for ollama (default: http://localhost:11434)
 //	OLLIE_OPENAI_URL     base URL for openai-compatible backends
 //	OLLIE_OPENAI_KEY     API key (required for openai/openrouter)
 //	OLLIE_ANTHROPIC_KEY  API key (required for anthropic)
+//	OLLIE_GEMINI_KEY     Google AI Studio API key (required for gemini; falls back to OLLIE_OPENAI_KEY)
 //	OLLIE_COPILOT_TOKEN  bearer token (required for copilot)
 //	OLLIE_KIRO_TOKEN     bearer token or sqlite:// URL for kiro/codewhisperer
 //	                     (default: sqlite path auto-detected from Kiro CLI data dir)
@@ -104,14 +105,20 @@ func newBackend(which string) (Backend, error) {
 		return NewCopilot(token)
 	case "kiro", "codewhisperer":
 		return NewCodeWhisperer(os.Getenv("OLLIE_KIRO_TOKEN"))
+	case "gemini":
+		key := geminiKey()
+		if key == "" {
+			return nil, fmt.Errorf("OLLIE_GEMINI_KEY is required for gemini backend")
+		}
+		return NewGemini(key)
 	default:
-		return nil, fmt.Errorf("unknown OLLIE_BACKEND %q (supported: ollama, openai, openrouter, anthropic, copilot, kiro)", which)
+		return nil, fmt.Errorf("unknown OLLIE_BACKEND %q (supported: ollama, openai, openrouter, anthropic, copilot, kiro, gemini)", which)
 	}
 }
 
 // Backends returns the list of supported backend names.
 func Backends() []string {
-	return []string{"ollama", "openai", "openrouter", "anthropic", "copilot", "kiro"}
+	return []string{"ollama", "openai", "openrouter", "anthropic", "copilot", "kiro", "gemini"}
 }
 
 // openAIName derives a short backend label from the OLLIE_BACKEND value and
@@ -129,6 +136,8 @@ func openAIName(which, url string) string {
 		return "mistral"
 	case strings.Contains(url, "anthropic"):
 		return "anthropic"
+	case strings.Contains(url, "generativelanguage") || strings.Contains(url, "google"):
+		return "gemini"
 	case strings.Contains(url, "localhost") || strings.Contains(url, "127.0.0.1"):
 		return "local"
 	default: