Vetted Professional Feedback
Every comparison and evaluation on Certera is performed by qualified legal professionals testing realistic, practice-focused workflows.
About Certera.AI
Compare Legal AI Answersside by side
Many LLM benchmarks fail to capture the nuances of legal practice. Certera bridges this gap by enabling legal professionals to test legal prompts across AI models. Legal prompts are sent to two models and answers are shown side by side. Users choose the best answer and then models are revealed. These choices help measure how LLMs handle real legal work.
What is Certera.AI?
Legal AI evaluation & benchmarking by legal professionals
Judge two LLMs head to head, choose the most accurate response, and turn professional judgment into a leaderboard the whole legal community can learn from.
Side-by-side answers
Send one legal question to two AI models and read both responses in a clean, side-by-side view.
Judge the answer, not the brand
Model names stay hidden until you choose the most accurate legal AI output, so your vote reflects the answer itself, not the logo behind it.
Legal AI leaderboard
Preferences from legal professionals rank how leading models perform on real legal prompts, and results appear on the legal AI leaderboard.
Anonymization tool
Optionally redact or replace identifying details in a prompt before it is ever sent to a model.
Made for legal work
Built for lawyers and legal professionals to evaluate AI on the kind of legal tasks they handle every day.
Preferences put to work
Every comparison you make feeds model evaluation and helps measure how legal AI is improving over time.
How it works
From prompt to a clear pick in three steps.
Input a real legal question and choose the most accurate legal AI output.
- 1
Enter your prompt
Ask a real legal question. Optionally redact sensitive details first with the built-in anonymization tool.
- 2
Compare two answers
Your legal prompt is sent to two AI models and both responses appear side by side, with the model names hidden until you select the most accurate legal AI output.
- 3
Vote for the better answer
Pick the response you would actually use. Your choice feeds the AI leaderboard and model evaluation.
Why it matters
Real human measurement.
From AI hype to hard evidence: vetted by legal legal professionals, measured with data.
Empirical Leaderboard & Rankings
By collecting structured preference data and confidence intervals, Certera maintains a live legal AI leaderboard showing which models consistently deliver reliable outputs.
Closing the Quality Loop
Our goal is to create a direct feedback loop between legal practitioners, model developers, and legal tech buyers—ensuring that AI tools for legal research and contract drafting meet the highest standards of precision.
FAQ
Frequently Asked Questions
Certera.AI is a Legal AI comparison tool for legal professionals from Percipient. You submit a legal prompt, get answers from two AI models, and choose the one you prefer, which helps evaluate how models handle legal work and AI for Law.
Certera.AI is built for lawyers and other legal professionals who want to evaluate AI responses to legal and related prompts. Access is currently limited to verified legal professionals.
There is no charge to use the service. You just need to be a legal professional.
Your prompt is sent to two AI models and both answers appear side by side. The model names are revealed only after you choose, so your decision is driven by the answer rather than the brand.
No. Certera is an evaluation hub that connects to major LLMs via API. It serves as a side-by-side comparison tool, allowing you to see how different models handle the exact same legal query at the same time.
Never. To provide a true benchmark of a model's capabilities, Certera passes your prompts through exactly as written. This ensures the responses you compare are clean and objective, accurately reflecting the raw performance of each AI model.
No. Certera.AI does not provide legal advice, and AI answers may be incomplete or inaccurate. You remain responsible for reviewing every answer and applying your own professional judgment.
An optional anonymization tool helps you redact or replace identifying details before a prompt is sent. You stay responsible for what you ultimately submit.
We aggregate preference votes across many comparisons to show how leading models perform on legal prompts over time. Rather than relying on static, standardized tests or compliance with pass/fail rubrics with LLMs as a judge, Certera evaluates models using a Bradley–Terry model and presents results as Elo-style ratings derived from blind pairwise comparisons conducted by vetted legal professionals. Learn more about the methodology.