# Data for AI ## What makes Coresignal’s data AI-ready? AI models are only as good as the data they’re trained on. That’s why the quality, structure, and accessibility of used data matter. At Coresignal, we design our datasets with AI applications in mind, enabling efficient model training, improved performance, and reliable outcomes. Our data is delivered in widely supported formats, pre-processed to reduce noise and inconsistency, and enriched with metadata for better traceability and control. Below is a breakdown of the key factors that make Coresignal’s datasets suitable for AI and ML pipelines. ### **Fresh and continuous updates** AI systems learn from patterns in real-world activity. That’s why data of certain entities is continuously refreshed. With the option to integrate employee webhooks or incremental updates, your models stay aligned with the most current market movements and behavioral signals. In cases where the update frequency is not sufficient, the [Real-time Employee API](https://docs.coresignal.com/employee-api/real-time-employee-api) offers a powerful solution by allowing you to scrape an employee's profile on demand. By leveraging this API, you ensure that you have immediate access to the freshest data, empowering you to make informed decisions based on the most current and relevant information available. ### **Format and structure designed for scale** Coresignal data is available in standard formats: CSV, JSON, JSONL, and Parquet, ensuring compatibility with common data processing and AI tools. These are optimized for large-scale processing and native support across modern ML frameworks. Whether you're fine-tuning models or building AI-powered platforms, our data is structured to scale with your architecture. Find more about [datasets delivery formats](https://docs.coresignal.com/introduction/delivery-formats). ### **Clean and ready-to-use data** Our main data is offered in multiple processing levels: Base, Clean, and Multi-source, to eliminate noise, clean records, normalize formats and combine several sources. This significantly reduces the risk of bias, improves training efficiency, and accelerates time-to-insight for AI teams. Additionally, you can [specify fields](https://docs.coresignal.com/api-introduction/requests/collect) in requests’ responses to prevent your data from being cluttered with unnecessary information. {% hint style="info" %} **Multi-source, Clean, or Base?** * **Multi-source datasets** contain cleaned and enriched data combining information from multiple sources. * **Clean datasets** are derived from our Base data and cleaned to ensure the best quality. * **Base datasets** freshly scraped and structured/updated for easier use. {% endhint %} ### **Metadata and record-level traceability** Our datasets include durable record identifiers and system-generated timestamps (e.g., `created_at`, `updated_at`) to support internal data management functions such as version control, deduplication, and consistency validation. These metadata fields enable: * Filtering or segmenting records by recency. * Observing changes to record attributes over time. * Merging datasets without reliance on non-unique fields. Where applicable, records also include domain-level context, like profile URLs, allowing traceability for training audits or data validation processes. ### **Deduplication and bias mitigation** We continually refine our deduplication logic to ensure records are unique across all datasets. For machine learning workflows, this reduces redundancy, improves training efficiency, and helps mitigate overfitting. Cleaner data leads to more balanced datasets and better generalization in predictive models. ### **Ethically sourced data** Coresignal only collects publicly available data, ensuring ethicality and adherence to the best web data collection industry practices, and audit readiness for AI models. With over 4.5 billion records across company, employee, job posting, and other datasets, we enable use cases ranging from predictive analytics to generative intelligence, backed by transparent sourcing and scalable infrastructure. Read more about [ethical public web data collection](https://docs.coresignal.com/introduction/data-and-compliance).