The data frontier modelscan't scrape.
The open web is exhausted. NablaSigma recruits practising domain experts — clinicians, litigators, quants, security researchers — and synthesizes their judgment into training, evaluation and reasoning data. Rights-cleared, provenance-tracked, licensed to the labs building frontier AI.
- 2,400+
- 14
- 31
- 100%
- 01reasoning traces
- 02expert preference pairs
- 03adversarial evals
- 04tool-use trajectories
- 05long-context corpora
- 06domain benchmarks
- 07red-team sets
- 08multi-turn dialogue
- 09RLHF rankings
- 10formal proofs
- 11agentic rollouts
- 12structured extraction
Hire. Synthesize. License.
Three stages, one chain of custody: the expert who anchored a record stays attached to it all the way through delivery.
We hire the experts
A vetted network of practitioners who still do the work — board-certified physicians, practising attorneys, buy-side quants, process chemists, staff engineers. Credential-checked, conflict-screened, and paid properly.
- Credential and licence verification
- Blind double-annotation with adjudication
- Conflict-of-interest and NDA screening
We synthesize the data
Expert judgment is the seed, not the ceiling. We scale a few thousand gold examples into millions of tokens of reasoning traces, preference pairs and adversarial cases — every generation traced back to the expert who anchored it.
- Expert-seeded synthetic generation
- Chain-of-reasoning and tool-use trajectories
- Contamination checks against public benchmarks
We license it to the labs
Delivered the way frontier teams actually consume data: versioned, schema-stable, with per-record provenance and a licence your counsel can sign. Exclusive, semi-exclusive or pooled.
- Per-record provenance and rights lineage
- Custom schemas, held-out eval splits
- Exclusivity tiers and refresh cadences
Every corpus is built per industry.
Each vertical carries its own expert cohort, task taxonomy and eval design.
Your domain isn’t here? We recruit to spec — tell us what you need.
From capability gap to licensed corpus.
Four stages, one accountable pipeline. Most pilots run two to four weeks from scope to first drop.
- 01
Scope
We map your capability gap to a data spec — task taxonomy, difficulty curve, eval design and the expert profile needed to anchor it.
- 02
Recruit & vet
We stand up a cohort from the network, or recruit to spec. Credentials verified, calibration round run, inter-annotator agreement measured before volume starts.
- 03
Produce & verify
Experts author gold seeds; synthesis scales them. Every batch passes blind review, contamination screening and your acceptance criteria.
- 04
Deliver & license
Versioned drops on your schedule, with provenance manifests, held-out splits and a licence scoped to exactly the rights you need.
Built to survive an audit.
Four commitments that show up in the deliverable, not just in the pitch.
Provenance, per record
Every row carries the expert, the credential class, the timestamp and the rights basis. Auditable end to end.
Eval-first
We build the benchmark before the training set. If we can't measure the lift, we won't sell you the corpus.
Contamination screened
Every drop is checked against public benchmarks so your evals stay honest.
Experts paid properly
Above-market rates and transparent terms. It is why the specialists stay, and why the quality holds.
Get paid for what you already know.
We work with practitioners, not students. If you have real depth in a technical or professional domain, your judgment is worth more to a frontier lab than to another slide deck.
Real rates
Project rates benchmarked to your professional hourly, not to crowdwork.
Real flexibility
Async, remote, scoped in blocks. Most contributors work 4–10 hours a week.
Real problems
Edge cases from your own practice — the ones a model gets confidently wrong.
Clear terms
Plain-language contracts, defined IP assignment, no unpaid trial work.
- Physicians & clinical specialists
- Attorneys & compliance counsel
- Quants & risk analysts
- Staff+ software & security engineers
- PhD chemists & materials scientists
- Process & controls engineers
- Mathematicians & formal-methods people
- Translators & multilingual specialists
Questions we get asked.
Something we haven’t covered? Tell us what you’re building and we’ll answer directly.
Tell us what you need.
Two doors: one for teams that need data, one for experts who want to supply it.
Get data for your industry
Tell us the capability gap and the domain. We'll come back with a scoped pilot, an eval plan and a price.
Prefer email? Write to partnerships [at] nablasigma [dot] com.
Join the expert network
Tell us your domain and where your judgment is sharpest. If there's a fit, we'll reach out with live projects.
Prefer email? Write to workwithus [at] nablasigma [dot] com.