Try It Yourself
See how Faultline verifies claims across different providers.
How It Works
Three steps. Auditable proof.
Paste
Drop any AI claim. From ChatGPT, Claude, Gemini, or your own models.
Verify
Faultline checks against live web sources, cross-references citations, and scores confidence.
Report
Get an auditable verification report with claim graphs, confidence scores, and source citations.
Zero friction
Try it now — no account needed
Paste any AI-generated text. Get a full verification report in seconds. Real results, not a sales demo.
Simple, Transparent Pricing
Start free. Scale when you need to.
Multi-Model Verification Pipeline
The best model for each stage — routed to keep cost down without losing accuracy
Extract Claims
GPT-5.4 Nano
Fast JSON-adherent claim extraction at 193 TPS
~$0.002/scan
Verify Claims
Gemini 3 Flash
Google Search grounding for live web verification
~$0.008/claim
Synthesize Report
Claude Sonnet 4.6
Audit-trail reports (EU AI Act evidence) and deep critique
~$0.10/scan
Comparisons
See How Faultline Compares
Detailed feature-by-feature comparisons with popular alternatives.
Faultline vs PromptFoo
- •Claim-level forensics
- •EU AI Act audit-trail evidence
- •Real-time web verification
Faultline vs DeepEval
- •Factual claim verification
- •Pre-built verification rules
- •Multi-model pipeline
Faultline vs Manual Review
- •Under-a-minute scan time
- •$19/mo vs $50-100/hr
- •Unlimited concurrent verifications
Case Studies
Proven Results
Stop trusting. Start verifying.
Verify AI claims against live web sources — auditable proof in seconds.
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