Simple, transparent pricing
Start for free with 500 verifications per month. Scale predictably with usage-based pricing — no hidden fees, no surprise bills.
Simple, usage-based pricing
Start for free. Scale as you grow. Pay only for what you use.
Free
Start for free — no credit card required.
- ✓500 verifications/month
- ✓All 4 verification types
- ✓Free data sources
- ✓REST API access
- ✓1 team member
- ✓Community support
Starter
For small teams and production prototypes.
- ✓5,000 verifications/month
- ✓All 4 verification types
- ✓Abstract Phone + Email enrichment
- ✓Webhook integrations
- ✓99.5% uptime SLA
- ✓Email support
- ✓1 team member
- ✓$0.015/verification overage
Business
For growing teams that need higher throughput and priority support.
- ✓50,000 verifications/month
- ✓All 4 verification types
- ✓Company enrichment + news sources
- ✓WebSocket API + webhooks
- ✓Custom trust scoring
- ✓Fraud detection
- ✓5 team members
- ✓Priority support
- ✓99.9% uptime SLA
- ✓$0.01/verification overage
Enterprise
For organizations with custom security, compliance, and deployment needs.
- ✓Unlimited verifications
- ✓All 4 verification types
- ✓All data sources including OpenCorporates
- ✓Custom trust models
- ✓SSO/SAML + audit logging
- ✓On-premise deployment
- ✓24/7 dedicated support
- ✓Custom SLA up to 99.99%
- ✓Custom data source integrations
All plans include business, document, media, and claim verification — plus webhooks, audit logs, and API access.
Compare all featuresFull feature comparison
Everything you need to compare plans at a glance.
| Free | Starter | Business | Enterprise | |
|---|---|---|---|---|
| Verification types | ||||
| Business verification | ✓ | ✓ | ✓ | ✓ |
| Document analysis | ✓ | ✓ | ✓ | ✓ |
| Media provenance | ✓ | ✓ | ✓ | ✓ |
| Claim verification | ✓ | ✓ | ✓ | ✓ |
| Platform | ||||
| REST API | ✓ | ✓ | ✓ | ✓ |
| WebSocket API | — | — | ✓ | ✓ |
| Webhook integrations | — | ✓ | ✓ | ✓ |
| Custom trust scoring | — | — | ✓ | ✓ |
| Fraud detection | — | — | ✓ | ✓ |
| Scaling | ||||
| Verifications / month | 500 | 5,000 | 50,000 | Unlimited |
| Team members | 1 | 1 | 5 | Unlimited |
| Overage rate | — | $0.015/call | $0.01/call | N/A |
| Support & reliability | ||||
| Support | Community | Priority | 24/7 Dedicated | |
| Uptime SLA | — | 99.5% | 99.9% | Custom up to 99.99% |
| Enterprise | ||||
| SSO / SAML | — | — | — | ✓ |
| Audit logging | — | — | — | ✓ |
| On-premise deployment | — | — | — | ✓ |
| Custom data sources | — | — | — | ✓ |
| Custom trust models | — | — | — | ✓ |
Build vs. Buy: See the math
See how much you save by using SignalStack instead of building in-house verification.
Your inputs
Year 1 comparison
$180,000 build + $6,000 data sources
Year 2+ annual (no build cost)
3-year cost comparison
Frequently asked questions
Yes. The Free plan includes 500 verifications per month with all 4 verification types — no credit card required. Upgrade to Starter ($79/mo) or Business ($399/mo) when you need more volume, webhooks, priority support, or paid data sources.
Overages are charged at $0.015 per additional verification call for Starter and $0.01 for Business plans. You can set hard caps and usage alerts from the dashboard to control spending. Unused calls do not roll over.
Yes. You can change plans at any point in your billing cycle. Upgrades take effect immediately with a prorated charge. Downgrades apply at the start of the next billing cycle.
Yes. Annual plans receive a 20% discount compared to monthly billing. Contact sales for enterprise annual commitments with custom pricing.
We accept all major credit cards (Visa, Mastercard, Amex), wire transfers for Enterprise plans, and invoicing for annual commitments over $10,000.