2 files changed, 16 insertions, 2 deletions
diff --git a/internal/retry/backoff.go b/internal/retry/backoff.go
index a372b37..72b923c 100644
--- a/internal/retry/backoff.go
+++ b/internal/retry/backoff.go
@@ -22,7 +22,13 @@ const maxBackoffDelay = 5 * time.Minute
 // OpenAI-compatible error text (internal/llm); "rate_limit_error",
 // "overloaded_error", and "529" additionally match Anthropic's Messages API
 // error shape (HTTP 429 with error.type "rate_limit_error", or HTTP 529
-// with error.type "overloaded_error" — see internal/provider/anthropic).
+// with error.type "overloaded_error" — see internal/provider/anthropic);
+// "resource_exhausted" additionally matches Gemini's generateContent API
+// error shape (HTTP 429 with error.status "RESOURCE_EXHAUSTED" — see
+// internal/provider/google). The plain "429" check above already covers
+// Gemini's HTTP status code, but the status string is matched too for
+// parity with how the Anthropic error types are matched by name, not just
+// by status code.
 func IsRateLimitError(err error) bool {
 	if err == nil {
 		return false
@@ -34,7 +40,8 @@ func IsRateLimitError(err error) bool {
 		strings.Contains(msg, "overloaded") ||
 		strings.Contains(msg, "rate_limit_error") ||
 		strings.Contains(msg, "overloaded_error") ||
-		strings.Contains(msg, "529")
+		strings.Contains(msg, "529") ||
+		strings.Contains(msg, "resource_exhausted")
 }
 
 // ParseRetryAfter extracts a Retry-After duration from an error message.
diff --git a/internal/retry/backoff_test.go b/internal/retry/backoff_test.go
index d605f29..4d893c3 100644
--- a/internal/retry/backoff_test.go
+++ b/internal/retry/backoff_test.go
@@ -59,6 +59,13 @@ func TestIsRateLimitError_HTTP529(t *testing.T) {
 	}
 }
 
+func TestIsRateLimitError_GoogleResourceExhausted(t *testing.T) {
+	err := errors.New(`google: http 429 RESOURCE_EXHAUSTED: You exceeded your current quota.`)
+	if !IsRateLimitError(err) {
+		t.Error("want true for Gemini 'RESOURCE_EXHAUSTED' shape, got false")
+	}
+}
+
 func TestIsRateLimitError_NonRateLimitError(t *testing.T) {
 	err := errors.New("claude exited with error: exit status 1")
 	if IsRateLimitError(err) {