OpenAI 2026 hackathon

ZZAIM — AI Lesson-Plan Studio for Korean K-12 Teachers

AI lesson-plan studio for Korean teachers. Chat, MCP (ChatGPT & Claude), and direct export to HWPX — Korea's official school document format — built from scratch during Build Week with Codex & GPT5.6

Solo project by Jeonghyeon Lim · 0 likes · 2 comments

Archive position — measured, not model output

0 likes on Devpost

2,264 of the 7,856 archived projects have more likes, and 5,592 share exactly 0 — so this project's #7,830 place in the like-ranked listing is a tie-break inside that group, not a ranking.

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Likes on Devpost. ▲ marks this project's group.

Show the figures
LikesProjectsShare of archive
05,59271.2%
11,75822.4%
22853.6%
3–41321.7%
5–9751.0%
10+140.2%
Devpost like counts for all 7,856 archived projects, captured when this archive was built.

Executive Summary

What the company appears to be

ZZAIM is an AI-powered lesson-planning tool designed for Korean K-12 teachers. The product enables teachers to generate lesson plans using AI (specifically GPT-5.6), review and approve drafts, and export them directly into HWPX — Korea’s official school document format. It was built during a hackathon and is described as a specialized tool tuned on real teaching materials.

What changed

The project evolved from an AI lesson-plan generator to a full end-to-end system that includes chat-based drafting, approval workflows, and export functionality into HWPX — closing a gap in the existing AI ecosystem for Korean educators.

Single most important open question

Is there evidence of real-world usage or traction beyond the hackathon prototype? The description does not indicate any revenue, customers, or adoption metrics beyond internal testing and validation.

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What The Product Actually Is

The description states that ZZAIM is:

  • A chat-based AI lesson-plan studio for Korean teachers.
  • Built with GPT-5.6, Codex, and Hugging Face Spaces.
  • Capable of generating lesson plans from scratch, allowing user approval before export.
  • Designed to produce valid, editable .hwpx files compatible with Hancom Office — the official document format in South Korea.

It also includes:

  • A master LessonPlan contract that supports fast initial drafting (~20s) followed by enrichment steps.
  • One-click HWPX export functionality verified in Hancom Office.
  • An MCP (Model Control Protocol) server on Hugging Face serving both ChatGPT and Claude connectors.
  • A custom-built HWPX engine constructed from scratch using zip+XML, without relying on existing libraries.

Inference The product appears to be a proof-of-concept or prototype built for a hackathon with limited commercial deployment. It is not evidenced to have launched in production or gained users beyond its creators.

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Positioning & Claim Evolution

The author claims ZZAIM:

  • Is an AI lesson-plan studio specifically tailored for Korean teachers.
  • Focuses on the “last mile” of lesson planning — turning AI drafts into submittable HWPX documents.
  • Tunes its AI models with real teaching-practicum materials to provide domain-specific depth.
  • Does not replace teachers but enhances their professional judgment.

Inference The positioning is narrow and localized to the Korean education system, particularly targeting public school teachers who must submit lesson plans in HWPX format. The claim of “domain depth” suggests an attempt to differentiate from generic AI tools by focusing on local requirements.

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Target Customer & ICP

The description states:

  • ZZAIM targets Korean K-12 teachers.
  • It is designed for use within the public education system, where HWPX is mandated.
  • The tool supports teachers in preparing lesson plans that meet official standards and can be submitted to schools or districts.

There is no evidence of segmentation beyond this core group. No mention of school administrators, curriculum designers, or other stakeholders.

Inference The ICP (Ideal Customer Profile) is narrowly defined as individual Korean K-12 teachers working in public schools who are required to submit lesson plans in HWPX format. There is no indication of broader targeting or scalability beyond this niche.

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Business Model & Pricing Evidence

There is no evidence provided about:

  • Revenue streams
  • Pricing models
  • Monetization strategy
  • Subscription plans or licensing fees

The description only mentions:

  • The cost per structured lesson-plan generation call was ~$0.09 on GPT-5.6.
  • No indication of how this would scale into a business model.

Inference No commercial business model is described or implied. The project appears to be an experimental tool built for a hackathon, with no evidence of monetization plans or pricing structures.

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Technical & Delivery Signals

The description states:

  • Built using Codex + GPT-5.6 CLI in a plan/audit/execute cycle.
  • Custom-built HWPX engine constructed directly from zip+XML (OOXML-free).
  • Uses Next.js/Vercel for web, Supabase for DB/auth, and Hugging Face Spaces for MCP.
  • Implements contract-first design with parity gates between web chat and MCP stacks.
  • Includes durability checks: generation only reports success after committed readback.

Inference The technical stack is well-defined and shows deliberate engineering choices. The use of a custom-built HWPX engine indicates deep understanding of the format and effort to solve a specific problem. However, there is no evidence of production-grade infrastructure or scalability beyond prototype-level delivery.

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Traction & Maturity Signals

The description states:

  • Live E2E workflow: chat → approve → HWPX download, verified in Hancom Office.
  • 45/45 MCP server tests, 42/42 LessonPlan contract tests, 5/5 HF↔web parity.
  • ~$0.09 per structured lesson-plan generation call on GPT-5.6.

It also mentions:

  • The tool is a prototype built during a hackathon.
  • No evidence of real-world usage or adoption beyond internal validation.

Inference There is no traction data, customer feedback, or user engagement metrics. The product exists only as a working prototype and has not been validated in live classrooms or schools.

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Competitive Context

The description does not provide:

  • Information on competitors
  • Market size or competitive landscape
  • Any mention of existing tools for lesson planning or AI-assisted education in Korea

Inference No competitive analysis is available. The tool appears to address a niche gap in the Korean market — specifically, the lack of AI tools that produce valid HWPX documents — but no evidence exists about how it compares to other solutions.

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Key Risks & Red Flags

Key risks and red flags based on the description:

  • No traction or revenue: The product is described as a hackathon prototype with no evidence of real-world usage.
  • Highly localized market: Focused only on Korean public education, limiting scalability.
  • Unproven monetization model: No pricing or business model details are shared.
  • Limited team size: Only one founder (Jeonghyeon Lim) is mentioned, raising questions about execution capacity.
  • Dependency on proprietary tech stack: Heavy reliance on GPT-5.6 and Hugging Face Spaces may pose risks if those platforms change or become unavailable.

Inference This is a highly experimental project with no demonstrated path to commercial viability or market traction. It lacks any evidence of real-world adoption, revenue, or scalability beyond its initial prototype phase.

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Diligence Questions To Ask The Founders

  1. What is the actual cost of building and maintaining this system at scale?
  2. Are there any existing partnerships with Korean schools or education authorities?
  3. How do you plan to monetize this tool in a way that aligns with public education budgets?
  4. Has anyone outside the team tested or used the product in real classrooms?
  5. What are the risks associated with relying on GPT-5.6 and Hugging Face Spaces for long-term stability?
  6. Is there any interest from other countries or educational systems that might want to adopt this model?

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Investment/Partnership Verdict

Not evidenced.

There is no evidence of:

  • Revenue
  • Customers
  • Traction
  • Market validation
  • Business model
  • Scalability
  • Team capacity for growth

The description presents a detailed technical prototype built during a hackathon, but offers no indication that it has moved beyond the experimental stage or achieved any form of commercial success.

Confidence level Very low. The project is described as a self-contained hackathon effort with no external validation or evidence of real-world impact.

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Source

Submitted to the OpenAI 2026 hackathon on Devpost. Project home on DevPost.

The analysis above was generated by a language model from the project's own one-line description. It is not independent research and contains no verified traction, revenue or customer data.