Read
Inspect evidence while preserving provenance and read state.
KESTRELProof before answer.
Evidence before confidence.
KESTREL evaluates evidence, measures coverage, surfaces contradictions, and refuses conclusions the available record cannot support.
Build on Evidence.
What evidence supports this claim?
Analyze a Document or Image Explore the Process- You ask.
- KESTREL gathers evidence.
- KESTREL evaluates contradictions.
- KESTREL measures coverage.
- Only then does it answer.
Private source analysis
Analyze a document or image
Upload privately for source-grounded analysis. KESTREL supports TXT, Markdown, PDF, JPG, JPEG, and PNG, preserves provenance, and does not retain the original upload after processing. Eligible de-identified derivatives may be retained for learning after private workspace deletion; uncertain or confidential candidates are destroyed.
Start Free Trial Sign InHow KESTREL evaluates a request
Evidence becomes a result.
- 01
Check
KESTREL checks whether sufficient verified evidence is already available.
- 02
Research
When necessary, KESTREL gathers material from approved authoritative sources.
- 03
Verify
Claims are retained only when supported by identifiable source material.
- 04
Present
KESTREL returns a supported answer, a bounded partial answer, or a truthful refusal.
How KESTREL works
Designed around justified answers.
Evaluate
Measure quality, corroboration, contradictions, coverage, and limits.
Explain
Show the verdict, evidence ladder, rejected material, and scope boundary.
Refuse
Withhold unsupported conclusions and explain why evidence was insufficient.
Access
Use KESTREL at the level you need.
Ask Once
Coming Soon- One evaluated question
- Complete Proof Card
- No membership required
Free Trial
Free- 10 evaluated questions
- 30-day temporary history
- No credit card required
Research Plan
$100/month- Saved private history
- Configuration-driven bounded capacity
- Server-verified PayPal subscription
Enterprise
Contact Us- Teams and SSO — consultation only
- Private corpora — consultation only
- Audit and deployment controls — consultation only
Documentation
Inspectable by design.
Understand verified, reused, assisted, insufficient-evidence, and safety-refusal results; private uploads; deletion; and plan availability.
Read Documentation