diff --git a/src/agents/opencode-zen-models.ts b/src/agents/opencode-zen-models.ts
index 49f207a51040..b1709fb1ac16 100644
--- a/src/agents/opencode-zen-models.ts
+++ b/src/agents/opencode-zen-models.ts
@@ -1,8 +1,11 @@
 /**
  * OpenCode Zen model catalog with dynamic fetching, caching, and static fallback.
  *
- * OpenCode Zen is a $200/month subscription that provides proxy access to multiple
- * AI models (Claude, GPT, Gemini, etc.) through a single API endpoint.
+ * OpenCode Zen is a pay-as-you-go token-based API that provides access to curated
+ * models optimized for coding agents. It uses per-request billing with auto top-up.
+ *
+ * Note: OpenCode Black ($20/$100/$200/month subscriptions) is a separate product
+ * with flat-rate usage tiers. This module handles Zen, not Black.
  *
  * API endpoint: https://opencode.ai/zen/v1
  * Auth URL: https://opencode.ai/auth