Pureset sources, curates and validates high-integrity data designed specifically for AI training — free from noise, bias and duplication — so your models generalize better, converge faster and ship safer.
Every dataset ships with a quality report, a lineage ledger and rights documentation.
Quarterly filing corpus · 2009–2021
Built for AI teams in
When models learn from model output, diversity decays with every generation. Finding truly representative, trustworthy data has become a growing challenge — and the answer isn't more scraping. It's data with a verifiable human origin.
Distinct human signal retained per training generation · illustrative
Lineage-stable corpus, same measurement · illustrative
| Dimension | Web-scraped with synthetic content | Pureset verified lineage |
|---|---|---|
| Median duplicate rate | 31.7% of tokens | 0.9% after pruning |
| Provenance coverage | < 12%, largely inferred | 100% cryptographically signed |
| Temporal certainty | Crawl-date approximations | Document-precise capture dates |
| Benchmark contamination | Unmeasured, compounds each generation | Screened against public benchmarks |
| Legal defensibility | Weak, undocumented | Rights-cleared, indemnified |
Charts are illustrative. Model collapse under recursive training is documented in Shumailov et al., “AI models collapse when trained on recursively generated data,” Nature 631, 755–759 (2024).
Clean data isn't found — it's engineered. Every Pureset dataset passes three accountable steps before it reaches your training run.
We start where the paper trail still exists.
Better generalization from truly representative data
Deterministic pruning that keeps rare human signal.
Faster convergence: no compute spent relearning duplicates
Numbers you can check — not adjectives.
Safer outcomes you can defend in an audit
Whether you're fine-tuning a small language model or building an enterprise-scale AI solution, Pureset gives you the data confidence you need.
Curated instruction, preference and domain sets sized for focused models. Pilot slices in weeks, not quarters.
Fine-tuning solutions SpecializeDomain collections for regulated industries, with the licensing and lineage your legal team will ask for.
Enterprise solutions PretrainHuman-authored corpora at trillion-token scale with sealed provenance, delivered as versioned, audit-ready shards.
Pretraining solutionsFlagship collections ship with document-precise timestamps and sealed lineage. Full slices are released under NDA with per-record audit rights.
Peer-reviewed science, monographs and standards. OCR-verified with formula-safe extraction.
Human-authored, license-tagged source from pre-2022 mirrors with commit-precise timestamps.
Rights-cleared literature, correspondence and long-form essays with edition-precise capture.
PII-scrubbed, multi-turn forum and helpdesk conversations with turn-level timestamps.
Every Pureset release ships with a Data Quality Report: a purity score, residual duplication, bias distribution, contamination screening, PII audit results and license class — measured, and re-verifiable with your own tooling.
Composite of six measured dimensions across 28.4M documents.
Audited controls, documented rights and contractual guarantees that survive due diligence.
Audited controls across security, availability and confidentiality.
Report available under NDACertified information security management across ingestion, storage and delivery.
Certificate IS-XXXXXXA signed provenance ledger accompanies every shard, with notarized hand-offs.
100% record coverageEnterprise licenses include infringement indemnification and rights documentation.
Included in enterprise termsTell us where your model is headed. We'll scope the corpus, share the private catalog under NDA and ship a pilot slice with a full validation report.