Simple, Transparent Pricing

Cryptographic proof for every inference. Start free, scale as you grow.

Explorer
Test the waters. See what verified inference looks like.
$0 /month
No credit card required
  • 100K tokens/month
  • Full receipt verification
  • OpenAI-compatible API
  • Community support
  • Test environment only
Get Started Free
Compliance Starter
For small teams building compliant AI applications.
$299 /month
+ $3.50/1M tokens over 1M
  • 1M tokens/month included
  • Merkle + XRPL attestation
  • Compliance documentation
  • Email support
  • Production API keys
Start 14-Day Trial
Enterprise
For regulated industries with strict requirements.
$2,999 /month
+ $2.50/1M tokens over 25M
  • 25M tokens/month included
  • BAA available (HIPAA)
  • Sovereign compute options
  • Dedicated support
  • Custom integrations
  • SLA guarantee
Contact Sales

🎯 Pilot Packages

Prove the value before committing. Our pilot packages include dedicated support, compliance mapping for your industry, and clear success criteria.

Compliance POC

$5,000 one-time
  • 10M tokens over 30 days
  • Dedicated technical support
  • Compliance mapping session
  • Integration assistance
  • Success criteria definition
Request Pilot

HIPAA Pilot

$10,000 one-time
  • 25M tokens over 60 days
  • Business Associate Agreement
  • Audit trail configuration
  • 2 compliance workshops
  • Security review documentation
Request Pilot

Enterprise Integration

$15,000 one-time
  • 50M tokens over 90 days
  • Custom integration development
  • On-call engineering support
  • Executive briefings
  • Transition to subscription
Request Pilot

Token Pricing by Tier

Tier Included Tokens Overage Rate
Explorer100K/monthHard cap
Starter1M/month$3.50/1M
Professional5M/month$3.00/1M
Enterprise25M/month$2.50/1M
PilotCustom$2.00/1M

Frequently Asked Questions

What's included in every receipt?

Every inference returns a cryptographic receipt containing: request hash, response hash, timestamp, routing information, Merkle proof, and XRPL transaction ID. You can verify any receipt independently using our open-source six-verifier tool.

Which AI models can I use?

SIX supports all OpenAI-compatible models. Route to GPT-4, Claude, or our sovereign compute (local models). All receive the same cryptographic attestation layer.

Is SIX HIPAA compliant?

SIX provides the infrastructure for HIPAA compliance: audit trails, access logging, and BAAs for Enterprise tier. Compliance is a shared responsibility — we provide the tools, you implement the policies.

Can I verify receipts independently?

Yes. Install our open-source verifier: npx six-verifier verify [receipt_id]. No SIX account required. The verification is cryptographic — we can't fake receipts even if we wanted to.

What if I exceed my token limit?

We'll notify you at 80% usage. Overages are billed at tier rates. You can also set hard caps in your dashboard to prevent unexpected charges.

Ready to see proof in action?

Get your API key in 30 seconds. First 100K tokens free.

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Pricing shown is informational. Final terms confirmed under agreement.
Enterprise and pilot pricing may vary based on requirements. Contact us to discuss.