# UNSOLVED

> The public, numbered registry of open problems in artificial intelligence. Every problem has a permanent number, a precise statement and a public record of progress. Operated by TEDAI GmbH, Vienna.

How the registry works:

- Each problem has a number, written №7. Numbers are permanent and never reused.
- Cite a problem as UNSOLVED-{n} (shown on the site as №{n}), for example UNSOLVED-6, with its address.
- A problem is open, in progress or solved. Statements carry a version (v1.0, v1.1), and the review board's verdicts carry a public rationale.
- The registry has no fixed size. "The 10 hardest problems in AI" refers only to the conference's own selection.

## Registry

- [The registry](https://unsolved.how/registry): every numbered problem, with its status, field and latest movement
- [№0: Predict a protein’s shape from its sequence](https://unsolved.how/problems/0): solved · AI × science
- [№1: Keep AI agents within the limits we set](https://unsolved.how/problems/1): open · Alignment & control
- [№2: Test AI that knows it’s being tested](https://unsolved.how/problems/2): open · Evaluation & benchmarks
- [№3: Is AI taking young people’s first jobs?](https://unsolved.how/problems/3): open · Work & economy
- [№4: Understand what happens inside an AI](https://unsolved.how/problems/4): open · Interpretability
- [№5: Can students use AI and still learn?](https://unsolved.how/problems/5): open · Learning & wellbeing
- [№6: Protect AI agents from hidden instructions](https://unsolved.how/problems/6): open · Robustness & security
- [№7: Build AI that keeps learning on the job](https://unsolved.how/problems/7): open · Memory & continual learning
- [№8: Make AI say when it doesn’t know](https://unsolved.how/problems/8): open · Reasoning & planning
- [№9: Can AI change how people vote?](https://unsolved.how/problems/9): open · Information & democracy
- [№10: Make AI agents reliable on long tasks](https://unsolved.how/problems/10): open · Reasoning & planning
- [№11: Do chatbots help or harm teenagers?](https://unsolved.how/problems/11): open · Learning & wellbeing
- [№12: How fast is AI speeding up AI research?](https://unsolved.how/problems/12): open · Deployment & institutions
- [№13: How much energy and water does AI use?](https://unsolved.how/problems/13): open · Climate & energy

## Blog

- [Why AI agents cross the lines we draw](https://unsolved.how/blog/why-ai-agents-cross-the-lines-we-draw.md): Agents trained on results take shortcuts, and in 2026 the shortcuts ran through real companies' systems. Labs can lower the rate but not yet rule it out.
- [Why AI safety tests can fail when models know it's a test](https://unsolved.how/blog/when-the-model-knows-its-being-tested.md): Frontier models now recognise many safety tests, often without saying so. A model that behaves only when watched could pass any test it recognises.
- [Is AI taking the first job? Nobody can tell yet](https://unsolved.how/blog/is-ai-taking-the-first-job.md): Payroll and Census data show young workers in AI-exposed jobs falling behind; other studies find little effect. Official data are too slow to settle it.

## Events

- [Events](https://unsolved.how/events): the global conference (Vienna, fall 2027) and local chapters

## Machine-readable

- [Sitemap](https://unsolved.how/sitemap.xml)
- [Blog feed (RSS)](https://unsolved.how/blog/feed.xml)
- [Problems API (JSON)](https://unsolved.how/api/v1/problems): every numbered problem with its statement, status and verdict, read-only and without a key; one problem at /api/v1/problems/{n}
- [OpenAPI description](https://unsolved.how/openapi.json): the API's operations, fields and errors (OpenAPI 3.1)
- [API catalog](https://unsolved.how/.well-known/api-catalog): the API and its description as a linkset (RFC 9727)
- [MCP server](https://unsolved.how/mcp): the registry for AI assistants over MCP (Streamable HTTP), read-only and without an account; tools search_problems, get_problem and list_developments; its [server card](https://unsolved.how/mcp/server-card) and the [catalog of agent resources](https://unsolved.how/.well-known/ard.json)

## Optional

- [Partnerships](https://unsolved.how/partnerships): how organisations partner with UNSOLVED: as founding partners, as patrons of a problem or a category of problems, or as sponsors of the conference and events
- [Imprint](https://unsolved.how/imprint), [privacy](https://unsolved.how/privacy) and [terms of use](https://unsolved.how/terms)