Examinai

AI-powered IELTS practice platform with writing assessment, speaking practice, and an IELTS knowledge assistant.

Features

• Writing Practice — Timed IELTS Writing tests (Task 1 & 2) with multi-expert AI feedback covering task response, coherence, lexical resource, and grammar. Includes corrected and improved essays.
• Speaking Practice — Live conversation with an AI examiner simulating IELTS Speaking Parts 1, 2, and 3 with real-time speech-to-text and text-to-speech.
• Knowledge Assistant — Chat with an AI that can search a curated IELTS knowledge base covering rules, scoring, tips, and exam format.

Tech Stack

• Framework: Next.js 16 (App Router), React 19, TypeScript
• AI: Vercel AI SDK v6, Fireworks AI (minimax, qwen3-vl, llama-70b), Deepgram TTS
• Database: Supabase (PostgreSQL, Auth, Storage), Drizzle ORM
• UI: Tailwind CSS 4, shadcn/ui, base-ui, Lottie animations

Getting Started

Environment Variables

Create .env.local:

NEXT_PUBLIC_SUPABASE_URL=
NEXT_PUBLIC_SUPABASE_PUBLISHABLE_KEY=
SUPABASE_SECRET_KEY=
DATABASE_URL=
FIREWORKS_AI_API_KEY=
DEEPGRAM_API_KEY=

Local Development

pnpm install
pnpm dev