diff --git a/README.md b/README.md
index d2a0315..4e907c9 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 # ReceiptNext — AI-Powered Expense Tracker
 
+> A production-ready, mobile-first Progressive Web App (PWA) for expense management with passwordless OTP login, AI receipt extraction (Gemini / OpenAI-compatible), and CSV/PDF email reporting with receipt images.
 
+**Tech Stack:** Go 1.23+ · HTMX · SQLite (pure Go) · Google Gemini / OpenAI · PWA
 
 ---
 
@@ -101,9 +103,8 @@ Configuration is via environment variables in `.env`. The install script builds
 | `PORT` | No | `8080` | HTTP server port |
 | `BASE_URL` | No | `http://localhost:8080` | Public URL for email links |
 | **AI Provider** | | | |
-| `AI_PROVIDER` | No | `gemini` | `gemini`, `openai`, or `ollama` |
+| `AI_PROVIDER` | No | `gemini` | `gemini` or `openai` |
 | `GEMINI_API_KEY` | For Gemini | — | Google Gemini API key |
-| `OPENAI_API_KEY` | For OpenAI | — | OpenAI-compatible API key |
 | **SMTP** | | | |
 | `SMTP_HOST` | See note | — | SMTP server hostname |
 | `SMTP_PORT` | See note | `587` | SMTP server port |