Catch and fix AI mistakes
automatically
DeepRails sits between your AI and your customers. It catches hallucinations (AI mistakes) and fixes them automatically, before anyone sees a wrong answer.
Prescribe penicillin for strep throat.
Penicillin allergy on filePrescribe azithromycin for strep throat.
The founder leads it
Niraj Patel tested Anthropic's AI for safety.
- Niraj PatelFounder and CEOAI Safety Researcher at Anthropic
- Janet Van Den Berg, CFAHead of LLM EngineeringFormerly at Morgan Stanley
- Dan FernandezMarketing and Operations20+ years scaling SaaS, incl. SoStocked
Wrong answers at scale?
Fixed automatically
DeepRails catches each one and rewrites it before your customer sees it.
- Catches hallucinations
Read more
Every answer is scored against your own sources, and made-up answers are flagged.
- Fixes them automatically
Read more
Defend rewrites the wrong answer before your customer ever sees it.
- Explains every flag
Read more
DeepRails Defend scores every answer and tells you why it flagged one, so you can fix the cause.
- Works with any model
Read more
One API call. Python, TypeScript, Go or Ruby.
The antidote for heparin is vitamin K.
The antidote for heparin is protamine sulfate. Vitamin K reverses warfarin.
Six checks, every answer
Every answer gets- CorrectnessAre the facts right?
- CompletenessDid it answer everything?
- SafetyNothing harmful or off-limits.
- ContextSticks to what you gave it.
- InstructionsFollows your rules.
- Ground truthMatches your known answers.
Real results
From clients who run it every day.
The AI Nobody Else Could Build: How DeepRails Created Permeos for the Former Dean of Harvard Business School
Kim B. Clark, former Dean of Harvard Business School and former Commissioner of Education for the LDS Church, chose DeepRails to build Permeos: the first AI platform that doesn't just teach leadership, but measures whether a person is actually becoming a better leader.
Safe Enough to Leave Alone With a Child: How DeepRails Built Paige, a Grade-Perfect AI Tutor
Quiklearn Increases Student Numbers by 100x with DeepRails' Defend API
What clients say
I have thoroughly enjoyed working with DeepRails. The work is always professional, precise, and timely.
Over my 45 years in business, I've broken bread with many of the superstars of technology,…
Read more
Over my 45 years in business, I've broken bread with many of the superstars of technology, sports, entertainment, venture capital, but none of them matched dinner the other night with the founder of DeepRails, one of the quickly emerging AI superstars of our time. In a word, Epic!
We have embedded DeepRails into two client engagements where the stakes around AI accuracy were non-negotiable.…
Read more
We have embedded DeepRails into two client engagements where the stakes around AI accuracy were non-negotiable. Their ability to evaluate, explain, and remediate LLM output quality at speed is unlike anything we have seen from the market.
Want us to build your AI system?
Custom AI development
One team, every discipline
Whatever AI system you want, our team has built it before: from scaling SaaS products to AI safety, large language models and finance.
One teamSaaSAI safetyLLMsFinanceOperationsEvals- Scaling a SaaS product?
One of our founders has built and exited multiple SaaS companies.
- Need your AI to actually work?
Every build runs on DeepRails, our own platform for catching and fixing AI mistakes.
- Need the math right across finance and operations?
Our team came from EY, PwC and Morgan Stanley.
- Need AI that's safe?
Niraj Patel tested Anthropic's AI for safety.
Where a wrong answer costs the most
- HealthcareSkills video · IV start
- Hand hygiene
- Patient ID
- Sterile field
- Documentation
An AI grader scores a nursing skills video, line by line against the rubric.
Read more
DeepRails checks every grade against the rubric your experts wrote. On one healthcare program, the AI reached 92% agreement with expert graders.
- Education
What is 3/4 of 12?
It's 8.
It's 9. Three groups of four is 12, so three fourths is 9.
Fixed before the student saw itA tutor's wrong answer is caught and fixed before the student sees it.
Read more
DeepRails checks every answer against your course material. 500K+ users protected, zero safety failures.
- FinanceClient report, Q3Written by AI
- Total value$1,284,500
- Year to date+6.2%
- Advisory fee0.85%
- Bonds45% 35%
Every number in a client report is checked against the source data.
Read more
One wrong number in a client report costs trust. DeepRails checks each figure before it goes out. Our team came from EY, PwC and Morgan Stanley.
Start small. Go as far as you need
Start with an AI audit
Our team audits your AI and how you work, then hands you a real report with clear ways to cut costs and raise productivity. One simple, one-time cost.
Read more
It's the easiest way to start working with the DeepRails development team.
Use the DeepRails platform yourself
Start on the free tier. Connect through the API.
Read more
Send your model's prompts and answers through the API. DeepRails Defend scores them and fixes wrong answers automatically.
Build or fix an AI system
Work with a team that came from Anthropic, EY, PwC and Morgan Stanley and has built and scaled SaaS products. Most builds ship in one to six weeks.
Read more
Niraj Patel tested Anthropic's AI for safety. He leads every build himself, from the first call to go-live.
Straight answers
What does DeepRails check?
Every answer sent through the API is measured by our proprietary technology on six facets: correctness, completeness, safety, context adherence, instruction adherence and ground truth adherence. Wrong answers are corrected automatically and sent back to you.
Do I have to change my AI model?
No. DeepRails works with any model that produces text. You send the prompt and the answer, and DeepRails checks it.
What does the guarantee mean?
It covers our custom AI development. We start by auditing how your business runs. If you then want us to build what the audit finds, we guarantee the result, the cost savings or new revenue the build is meant to deliver, and our fee is 20% of it. If it doesn't do the job as well as your team, we keep building on our dime.
Why start with an AI audit?
It's the best of both worlds. You see where money is leaking and where you're missing opportunities. At the end you have a clear game plan: DeepRails builds it, with a roadmap, goals and the savings or revenue to expect, or your own team takes a clear, concise roadmap and builds it. Either way, it's a low-cost way to get a high return.
- Pick a time
- Talk with our team
- Get a clear next step