# LafaekTOEFL

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Ajito Nelson Lucio da Costa](https://cerebralvalley.ai/u/ajitonelson)
- **GitHub:** https://github.com/ajitonelsonn/lafaek-toefl-ai-coach
- **Demo video:** https://www.youtube.com/watch?v=o88Z5__jkh0
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1945

LafaekTOEFL AI Coach is a free, open-source AI coach for the new TOEFL iBT that started in January 2026.

I'm preparing for my first TOEFL in Dili, Timor-Leste. The prep books I could get cost $50, took two weeks to arrive from Indonesia, and covered the old test. Official practice tests cost $49 each, and free materials give no feedback on writing or speaking.

LafaekTOEFL fixes that:
- Personal plan: a learner enters their level, target band, test date and accents. Meta's Muse models then build a personal plan in about 13 minutes: 133 questions in all 12 task types of the 2026 format, pictures, listening audio in five English accents (American, British, Australian, Indian, African), 120 vocabulary words and a day-by-day schedule up to the test.
- AI feedback: writing and speaking answers get an AI band score (1-6) with coaching.
- Mock test: a full timed mock test gives a band and CEFR level for each skill, and 4.0 or higher earns a certificate anyone can verify online with a QR code.

It's free to start, costs about $3.16 in AI calls per study plan (measured on the live app), and is MIT open source so schools can run their own copy.

Live app: https://www.lafaektoefl.tech
Docs (story, user guide with screenshots, architecture diagrams, cost breakdown): https://www.lafaektoefl.tech/docs

Judge demo account (plan already generated; 1 study plan and 2 mock tests left):
Email: lafaekaiajito@gmail.com
Password: LtcV7pCCPnUGhcGe7!

Or create new one in here https://www.lafaektoefl.tech/signup

Built during the hackathon: the first commit (26 Oct) contains only the LICENSE file, and all code was committed from 27 Oct onwards. See "Built during the hackathon" in the README.

https://github.com/ajitonelsonn/lafaek-toefl-ai-coach

## More from Meta Global AI Developer Hackathon

- [AssemblyGuard](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1942)
- [Wisdom Douglas](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1943)
- [HydroWatch](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1944)
- [Oneday](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1946)
- [Squadroot (Datalent LLC)](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1947)
- [Reflection Lab](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1948)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1945. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt