AI training data
Training data grounded in real work.
Proprietary, domain-specific data for training, fine-tuning and evaluating models, scoped around your task and sourced from the organisations that hold it.

Training, fine-tuning and evaluation
Different stages need different data.
- Pre-training and continued trainingBroad domain coverage: large volumes of specialist text, documents or records that teach a model how a field works.
- Fine-tuningSmaller, higher-quality sets aligned to a specific task, often with expert decisions or outcomes attached.
- EvaluationHeld-out, representative material, ideally never seen in training, used to measure how a model performs on real work.
Scoping
Quality is defined before sourcing begins.
Useful training data is specific. Before approaching potential owners, we work with you to set out what the data must contain and what would make it unusable.
- Task fitWhat the model should learn or be tested on, and which records actually reflect that.
- CoverageIndustries, geographies, time periods, edge cases and the variety needed.
- Format and structureFields, file types, labelling and the preparation each source would need.
- Provenance and permitted useWhere it came from, who can license it and for which uses.
Buying AI training data
Usually licensed, rarely sold outright.
Most proprietary business data isn't sold outright. It is licensed for defined purposes, often with restrictions on use, redistribution, retention and attribution. Understanding those terms early avoids sourcing data that can't actually be used for your model.
Haselpin helps both sides reach terms that fit the intended use. Each party should take its own legal advice on the licence itself.
How data licensing worksModalities we can scope.
Each is sourced against a specific requirement. None is held as ready-made inventory.
- Structured business records
- Technical documents
- Operational workflows
- Images and video
- Expert-generated examples
- Evaluation datasets
Tell us what your model needs.
Share the task, domain and intended use, and we'll assess whether a sourcing route is likely to exist.
Enquire
Start with a conversation.
Whether you need specialist data for an AI model or hold records that could be valuable to AI developers, start with a short, high-level enquiry.
What happens next
- 01
We review your enquiry
We read your brief and consider whether there is a realistic sourcing or licensing route.
- 02
We follow up to understand the detail
We ask about scope, intended use, rights and timing before suggesting any route.
- 03
Nothing moves without agreement
No data is shared and no one is committed to anything until terms are agreed.