LIA Engine · verified and certified AI answers
For teams already using AI in real processes

Your AI answers. LIA Engine certifies what can be verified, and tells you what can't. No model switch, no new workflow.

Try it free See the API 50 free verifications, no card required.
Improvement+25 to +100more points of correct answers, depending on the task
Certified errors0wrong numbers certified in our tests
LIA overhead< 0.2 sper answer, on top of your AI's time

Compared with

  • Kimi K340 → 100
  • GLM 5.356 → 100
  • GPT-OSS-20B50 → 100
  • Nemotron0 → 100
Plug it into your system

Change one URL and you're done

If your system already calls an AI from code, LIA Engine sits in the middle: same API, your own AI and your own key. Every answer comes back with its certificate.

from openai import OpenAI

client = OpenAI(
    base_url="https://liaengine.com/v1",    # before: your AI's URL
    api_key="lia_...",                      # your LIA key
    default_headers={
        "x-lia-proveedor": "openai",        # your AI (gemini, anthropic…)
        "x-upstream-api-key": "sk-...",     # your key for that AI
    },
)
r = client.chat.completions.create(model="gpt-4o-mini", messages=[...])
# r.liaCertification → CERTIFIED, or what couldn't be verified
Get my LIA key

Works the same with JavaScript, curl or any OpenAI-compatible library, and with prompts in any language.

Or try it first

The LIA chat

Same engine, on one screen. Upload an Excel sheet, a PDF or ask a question, and see what LIA certifies and what can't be verified.

Spreadsheets and invoicesTotals, VAT, overdue items and invoice-to-payment matching.
DiagramsFlowcharts, org charts and charts without errors.
Open the chat

The chat and the dashboard are in Spanish for now; your questions can be in English.

Proof, not promises

Anyone can check the certificate

Every answer travels with its signed certificate. Your team, your client or your auditor can check it with LIA Engine's public key, without taking our word for it. If a single value in the answer changes, verification fails.

$ node verificar_certificado.js respuesta.json https://liaengine.com/v1/clave-publica
OK    Valid Ed25519 signature
OK    Answer unchanged since it was certified
RESULT: VALID CERTIFICATE
Download the verifier (MIT)
Where it pays off

Where a mistake is expensive

Finance and invoicingTotals, VAT, due dates and invoice-to-payment matching, to the cent. Also from a photo of an invoice or receipt.
Law firmsAmounts and data extracted from documents, with no inventions: every value must be in the text.
Healthcare adminPatient data copied exactly from the source, with no inventions.
Logistics and operationsRankings, filters and reports that add up with the records.
Customer supportEvery ticket gets a valid category, none skipped or duplicated.
Design and diagramsFlowcharts, org charts, scale drawings and charts without errors, plus electronic circuits.
Monthly plans in USD · cancel anytime

Start with 50 free verifications

You use your own AI and your own key: you pay for verification, not for someone else's tokens. Every plan includes every feature: chat, API, certificates, spreadsheets, photos and diagrams.

Trial

Free
  • 50 verifications
  • Chat and dashboard included
  • No card required
Try it

Starter

USD 99 / mo
  • 2,000 verifications per month
  • USD 49.50 per 1,000
  • Email support
Choose Starter

Professional

USD 399 / mo
  • 20,000 verifications per month
  • USD 19.95 per 1,000
  • Email support
Choose Professional

Business

USD 1,490 / mo
  • 150,000 verifications per month
  • USD 9.93 per 1,000
  • Email support
Choose Business

Corporate

from USD 2,900 / mo
  • 500,000+ verifications per month
  • Dedicated server for your company
  • Certificates signed with your key
  • Priority email support
Request a proposal

Payments are processed in Argentine pesos through Mercado Pago.

FAQ

What people ask most

What is LIA Engine?

A service that sits between your systems and the AI you already use. Your AI answers; LIA checks the answer against your data and the rules of the request, fixes what can be computed and returns a signed certificate. Anything that can't be verified is not certified, and you're told why.

Does it work with the AI I already use?

Yes. It works with OpenAI, Claude, Gemini, Groq, DeepSeek, Kimi, GLM and more, through the OpenAI-compatible API: change the base URL to https://liaengine.com/v1 and add your LIA key. Every customer uses their own AI key.

What can it certify today?

Invoices and VAT, Excel and PDF spreadsheets, photos of invoices and receipts, data extracted from documents, diagrams and charts, and electronic circuits.

What happens if the AI's answer is wrong?

If the error can be computed, LIA fixes it before returning the answer. If it can't be verified, LIA stops it: no certificate, and an explanation of why.

How is a certificate verified?

Every certificate is digitally signed (Ed25519). Anyone can verify it with LIA's public, MIT-licensed verifier, without creating an account.

Do you store what I ask my AI?

For each request we keep the control record (date, result, model, timings), not the text of your question or the data you send. Certified answers are kept for 90 days so you can download their certificate. Details are in our privacy policy (in Spanish).

Your account

Try it with your own AI

Sign in with Google, no card, and start with the free trial.

  1. Sign in with Google.
  2. Create your LIA key.
  3. Connect your AI: OpenAI, Claude, Gemini, Kimi, GLM and more.
Create your free account

Sign-in and the dashboard are in Spanish for now. Look for «Ingresá con Google».

Sign in with Google