Reference Lens
Manual Evaluation Interface
No charge, rate-limited
- Entailment analysis
- Provenance verification
- Trust score breakdown
- No authentication required
Metered Verification API
Machine-to-machine API access
per verification
- Production-ready API
- Rate limiting & quotas
- Complete audit trails
- Monthly minimum: $500
Licensed Infrastructure
Deployed in your environment
Contact for pricing
- VPC / air-gapped deployment
- SLA guarantees
- Custom integrations
- Compliance certifications
Mission Critical Information
What is deterministic verification?
Ancestor evaluates whether a source supports, contradicts, or fails to justify a claim. Our scoring is deterministic and auditable - not a black box.
How is this different from fact-checking?
We don't determine truth. We judge citation behavior - whether the source you provided actually supports the claim you're making. Think academic citation verification, not truth arbitration.
What happens when I hit API limits?
Reference Lens hits rate limits and returns friendly errors. Metered API hits billing limits and returns 402 Payment Required until your next billing cycle.
Can I get enterprise features on the metered plan?
No. Licensed Infrastructure includes governance features, compliance tools, and deployment flexibility that aren't available on the metered plan.