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title: README
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# Alion

**Alion reads job postings directly from employers' own hiring systems** - 80,000+ employers, re-checked every 48 hours - and turns them into data about companies, pay and hiring: which roles are really open, how long they stay up, who is hiring and what they pay.

## Datasets

| Dataset | What it is |
|---|---|
| [ghost-jobs-index](https://huggingface.co/datasets/alion-io/ghost-jobs-index) | Monthly Ghost Jobs Index: how long postings stay up and how many carry ghost-job signals, with month-on-month change on the same employers (CC BY 4.0) |
| [ghost-job-detection](https://huggingface.co/datasets/alion-io/ghost-job-detection) | 20,000 postings with real lifecycle labels: still up five weeks later, or closed - for ghost-job and time-to-close models |
| [job-posting-extraction](https://huggingface.co/datasets/alion-io/job-posting-extraction) | 8,000 posting texts from 131 countries with the fields Alion extracts: role, seniority, remote scope, salary, technologies |
| [salary-benchmarks](https://huggingface.co/datasets/alion-io/salary-benchmarks) | Pay percentiles by role family, seniority and country from stated salaries |
| [whos-hiring](https://huggingface.co/datasets/alion-io/whos-hiring) | The 1,000 employers opening the most roles this month, with stack and funding |
| [role-technology-taxonomy](https://huggingface.co/datasets/alion-io/role-technology-taxonomy) | The role tree (11 languages) and technology tree Alion classifies postings with |
| [alion-job-market-samples](https://huggingface.co/datasets/alion-io/alion-job-market-samples) | Samples of the job, company and pay data |

The full, daily data is on [alion.io](https://alion.io/?utm_source=huggingface&utm_medium=org&utm_campaign=alion-io) and through the [API and MCP server](https://alion.io/developers?utm_source=huggingface&utm_medium=org&utm_campaign=alion-io). Questions and bulk access: info@alion.io