diff --git a/src/rotator_library/providers/firmware_provider.py b/src/rotator_library/providers/firmware_provider.py
index 0ef1a3195..dc856996f 100644
--- a/src/rotator_library/providers/firmware_provider.py
+++ b/src/rotator_library/providers/firmware_provider.py
@@ -32,8 +32,18 @@
 class FirmwareProvider(FirmwareQuotaTracker, ProviderInterface):
     """
     Provider implementation for the Firmware.ai API with quota tracking.
+
+    Firmware.ai is OpenAI-compatible, so requests are routed through LiteLLM's
+    OpenAI provider with api_base override. This class provides:
+    - Quota tracking via the FirmwareQuotaTracker mixin
+    - Model discovery from Firmware.ai's /models endpoint
+    - Cost calculation is skipped since Firmware models aren't in LiteLLM's pricing DB
     """
 
+    # Skip LiteLLM cost calculation - Firmware.ai models use custom naming
+    # (e.g., firmware/anthropic/claude-sonnet-4-5) not in LiteLLM's pricing database
+    skip_cost_calculation: bool = True
+
     # Quota groups for tracking 5-hour rolling window limits
     # Uses a virtual model "firmware/_quota" for credential-level quota tracking
     model_quota_groups = {