OpenAI 2026 hackathon

WattProof

Upload an electricity bill to WattProof. GPT-5.6 extracts evidence, while deterministic code checks each charge against the tariff in effect, flags errors, and drafts a review request.

Team of 2 · 2 likes · 0 comments

Archive position — measured, not model output

2 likes on Devpost

221 of the 7,856 archived projects have more likes, and 285 share exactly 2 — so this project's #497 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

WattProof is a self-reported Python-based tool that allows users to upload an electricity bill and receive automated error detection via GPT-5.6 and deterministic code checks against tariff data. It claims to flag billing errors, draft review requests, and operate with a focus on transparency and reproducibility.

What changed

The project description is a self-reported submission for the OpenAI 2026 hackathon. No prior version or evolution is described; it appears to be a new build.

Single most important open question

Is there any evidence of traction, revenue, or customer adoption beyond the author's own account?

Analysis basis

The entire analysis is based on the self-reported project description provided by the caller. All claims are unverified and must be treated as stated by the author only. No third-party data, financials, customers or historical context are available.

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What The Product Actually Is

The description states that WattProof is a small Python application built with:

  • Flask (for a framework-free responsive interface)
  • Pydantic (to define versioned contracts for extraction, evidence, tariff, audit, comparison, and review-request)
  • Python Decimal code (for money arithmetic with explicit rounding)
  • GPT-5.6 (via OpenAI API) to map unknown native-PDF text into typed evidence
  • Codex (used in primary build session)

It runs entirely locally for the bundled public sample without an API key.

Inference The product is described as a proof-of-concept or prototype, not a production-ready SaaS offering. It is not evidenced to be used by customers or deployed beyond the author’s own environment.

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Positioning & Claim Evolution

The description states that WattProof:

  • Uses GPT-5.6 to extract evidence from PDFs
  • Does not calculate charges or invent missing data
  • Flags errors using deterministic code checks against tariffs
  • Drafts review requests citing exact lines and sources
  • Operates with a focus on truth, reproducibility, and transparency

Key claims include:

  • “Effective-period truth” — newer tariffs are not applied if they didn’t govern the bill
  • “Evidence before automation” — users can correct facts before conclusions
  • “Deterministic money” — GPT reads evidence; code owns arithmetic
  • “Visible uncertainty” — unsupported riders and insufficient data remain explicit
  • “Action without overclaiming” — final request asks for review, not resolution

Claim vs. Fact

These are self-stated positioning elements, not verified claims of traction or customer validation.

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Target Customer & ICP

The description does not state who the intended users are beyond the general context of electricity bill auditing.

Not evidenced No specific customer profile, persona, or ICP is described.

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Business Model & Pricing Evidence

There is no evidence in the description of:

  • A pricing model
  • Revenue streams
  • Monetization strategy
  • Customer acquisition costs
  • Any commercial arrangement

Not evidenced The business model and pricing are not described.

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Technical & Delivery Signals

The project is built with:

  • Flask (web framework)
  • Python (core logic)
  • Pydantic (schema validation)
  • GPT-5.6 via OpenAI API
  • Codex (used in development)
  • JavaScript (for UI, implied)

It includes:

  • Versioned contracts for data types
  • SHA-256 hashes for source snapshots
  • Local execution for sample documents
  • Regression testing with golden and synthetic fixtures

Inference The tool is described as a minimal prototype built for demonstration or hackathon use. It is not evidenced to be in production, scalable, or integrated into any larger platform.

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Traction & Maturity Signals

The description states:

  • Team size: 2
  • Built for the OpenAI 2026 hackathon
  • No revenue, customers, or adoption data are mentioned
  • The sample is bundled and runs locally without API key

Not evidenced There is no evidence of traction, usage, or product maturity beyond the author’s own account.

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Competitive Context

The description does not mention:

  • Competitors
  • Market size
  • Existing solutions in the electricity bill auditing space
  • Product differentiation from other tools

Not evidenced No competitive landscape or positioning relative to existing players is described.

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Key Risks & Red Flags

  • The project is a self-reported hackathon submission with no evidence of commercial traction.
  • GPT-5.6 is used for extraction but not for decision-making or calculation.
  • No customer data, revenue, or usage metrics are provided.
  • The tool is described as a prototype with local execution and no API integration.
  • The team size is small (2 people), which may imply limited scalability or resources.

Inference The lack of any commercial evidence raises questions about viability, market fit, and potential for growth.

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Diligence Questions To Ask The Founders

  1. What is the intended customer segment and how did you identify them?
  2. Are there any real-world users or test cases beyond the sample bill provided?
  3. How do you plan to monetize this tool if it remains a prototype?
  4. Is there any intention to scale beyond the current local execution model?
  5. What are your plans for integrating with utility providers or billing systems?

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Investment/Partnership Verdict

There is no evidence of revenue, customer adoption, or commercial traction. The project is described as a hackathon submission and prototype built by two individuals.

Verdict Not evidenced to be a viable investment or partnership opportunity at this stage. The product lacks any demonstrated market demand or business model.

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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.