Expert legal-reasoning data for frontier AI
Decidendi is a vetted network of Commonwealth- and African-jurisdiction lawyers who rank, correct, and red-team AI legal reasoning: the expert coverage your current vendors can't source, delivered as managed, quality-controlled capacity.
Criminal procedure · Common law
The defendant could not prove he was at home when the burglary occurred, so the court should convict him of the offence.
Unreviewed · Ranked 2 of 2
Reverses the burden of proof. The prosecution must prove guilt beyond reasonable doubt; the accused proves nothing. A model that ships this reasoning is a liability in any common-law jurisdiction. That is exactly the failure our reviewers catch.
Category: Burden · Reviewer verified
i
Frontier models ship worldwide, but legal-reasoning quality outside US and UK law is thin. Crowd workers can't evaluate it. You need practising lawyers, who are hard to source at scale and nearly absent for African and Commonwealth jurisdictions.
ii
Decidendi is built from inside the talent pipeline these jurisdictions produce, with direct access to the practising lawyers who qualify from it.
iii
Expert, high-consequence domain data is the scarce input. Jurisdiction-specific legal correctness is a rising liability, and for now an open lane.
Two model answers, ranked on legal soundness, with the reasoning written out, not just a label.
Single answers scored against your rubric, calibrated to hold consistently across reviewers.
Probes that surface hallucinated holdings, misapplied tests, and invented authority before your users find them.
Model-quality answers drafted by lawyers, to standard, for supervised fine-tuning.
You define the tasks and own the data. We supply the vetted experts, the managed QA, and quality that holds at volume.
04 Quality control
Pilot enquiries clinton@decidendi.legal
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Clinton Tano · Founder