Now accepting early access signups

Trust every AI response. Verify before you deliver.

VeriLLM validates LLM outputs in real-time, catching hallucinations and factual errors before they reach your users. Simple SDK integration. Works with any LLM provider.

3 lines of code
import verillm{"

"}# Validate any LLM response{"
"}result = verillm.validate({"
"}    response=llm_output,{"
"}    reference=source_docs{"
"})

The Problem

LLMs are powerful — but they lie

Every AI application in production faces the same critical risk: hallucinated outputs that erode trust and create liability.

35%

of enterprises cite reliability as their #1 concern with AI

23%

hallucination rate in GPT-4 on factual queries

$2.1M

average cost of a single AI-related compliance failure

Hallucinations

LLMs confidently generate false information. Your users can't tell the difference — but your reputation pays the price.

Legal Liability

AI-generated misinformation can lead to lawsuits, regulatory fines, and compliance violations. "The AI said it" is not a defense.

Compliance Risk

Healthcare, finance, and legal sectors demand factual accuracy. One wrong AI response can trigger regulatory action.

The Solution

One line of code. Zero hallucinations delivered.

VeriLLM validates your LLM responses against source documents. Your app stays in control. Every response is validated in real-time before reaching your users.

app.py
from openai import OpenAI
import verillm

client = OpenAI(api_key="your-key")
veri = verillm.VeriLLM(api_key="veri_...")

# Your normal LLM call — unchanged
response = client.chat.completions.create(
    model="gpt-4",
    messages=[{"role": "user", "content": "..."}]
)

# Validate before delivering to user
result = veri.validate(
    response=response.choices[0].message.content,
    reference=your_source_documents
)

if result.flagged:
    handle_hallucination(result.flagged_claims)

Simple SDK Integration

Add 3 lines of code to your existing pipeline. Works with OpenAI, Anthropic, Mistral, or any LLM. Your LLM calls stay direct — VeriLLM validates alongside.

Real-time Validation

Every claim is extracted and verified against YOUR source documents using NLI models — before the response reaches your user.

Actionable Verdicts

Get a trust score, flagged claims with explanations, and suggested corrections. Block, warn, or log — you decide the policy.

< 200ms Overhead

Optimized NLI models and intelligent caching keep latency minimal. Your users won't notice — but they'll trust you more.

How It Works

Four steps to trustworthy AI

Our validation pipeline runs in milliseconds, ensuring every response is trustworthy before it reaches your users.

01
🔍

Claim Extraction

VeriLLM parses the LLM response and extracts individual factual claims that can be independently verified.

02
🧠

NLI Verification

Each claim is cross-referenced against your source documents that you provide using state-of-the-art Natural Language Inference models.

03
📊

Confidence Scoring

Every claim receives a confidence score based on evidence strength. Low scores flag potentially hallucinated content.

04

Decision

Based on your policy, responses Pass, Flag for review, or Block entirely. Users see only what you've approved.

Your App
LLM
Response
Response + References
VeriLLM
✅ Deliver or ❌ Block

Latency: <200ms additional overhead

Pricing

Simple, transparent pricing

Start free, scale as you grow. No hidden fees, no surprises.

Free

Perfect for testing and small projects

$0/month

500 validations/mo

  • 500 validations per month
  • Basic NLI verification
  • Confidence scoring
  • Community support
  • 1 API key
Get Started

Starter

For startups and growing teams

$49/month

5,000 validations/mo

  • 5,000 validations per month
  • Advanced NLI models
  • Custom knowledge base
  • Email support
  • 3 API keys
  • Basic analytics
Start Free Trial
MOST POPULAR

Pro

For production applications

$149/month

25,000 validations/mo

  • 25,000 validations per month
  • Priority NLI models
  • Unlimited knowledge base size
  • Priority support
  • 10 API keys
  • Advanced analytics & logs
  • Custom confidence thresholds
  • Webhook notifications
Start Free Trial

Scale

For enterprises with high volume

$399/month

100,000 validations/mo

  • 100,000 validations per month
  • Dedicated NLI model instances
  • Custom knowledge base & training
  • 24/7 dedicated support
  • Unlimited API keys
  • Enterprise analytics & audit logs
  • Custom confidence thresholds
  • SLA guarantee
  • On-premise deployment option
Contact Sales

All plans include a 14-day free trial. No credit card required.

Limited early access spots available

Join the waitlist

Be among the first to deploy VeriLLM in production. Early adopters get exclusive access to features, priority support, and special pricing.

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