Transparent pricing
Production-grade security at every scale
Start free. Scale to sovereign. All SDKs (TypeScript, Python, Go, Rust, JVM/Android) are free on every plan. Enterprise features (enclaves, AI, HSM, air-gap) available on higher tiers.
Showing the four most-popular plans. We have 14 in total - Free, four developer tiers, three business tiers, three enterprise tiers, and three mission-critical programs. Toggle above to expand.
Free Forever
FREE
Free-forever evaluation tier - PQC key operations, vault, and storage
- ✓10 GB encrypted storage
- ✓50,000 API calls/month
- ✓20 KMS keys
- ✓20,000 KMS operations/month
- ✓25 vault secrets
- ✓25 secret versions
- ✓3 API keys
- ✓Default crypto policy
- ✓All published QNSI SDKs included
Developer Plans
DEV PRO
Production PQC stack - keys, vault, SSE, and AI inference
- ✓250 GB encrypted storage
- ✓500,000 API calls/month
- ✓75 KMS keys
- ✓100,000 KMS operations/month
- ✓150 vault secrets
- ✓300 secret versions
- ✓15 API keys
- ✓Default crypto policy
- ✓Searchable encrypted storage enabled
- ✓AI inference enabled
- ✓All published QNSI SDKs included
DEV TEAM
Startup bridge - CBOM included, compliance visibility for growing teams
- ✓1 TB encrypted storage
- ✓1,000,000 API calls/month
- ✓200 KMS keys
- ✓350,000 KMS operations/month
- ✓600 vault secrets
- ✓1,500 secret versions
- ✓35 API keys
- ✓Default crypto policy
- ✓Searchable encrypted storage enabled
- ✓AI inference enabled
- ✓All published QNSI SDKs included
Business Plans
BUSINESS TEAM
Production-grade team tier with compliance reporting and crypto policy UI
- ✓5 TB encrypted storage
- ✓1,500,000 API calls/month
- ✓300 KMS keys
- ✓500,000 KMS operations/month
- ✓1,000 vault secrets
- ✓3,000 secret versions
- ✓50 API keys
- ✓Default crypto policy
- ✓Searchable encrypted storage enabled
- ✓AI inference enabled
- ✓All published QNSI SDKs included
Enterprise Plans
ENTERPRISE STANDARD
Enclave-secured AI inference with maximum crypto policy
- ✓20 TB encrypted storage
- ✓15,000,000 API calls/month
- ✓2,000 KMS keys
- ✓7,500,000 KMS operations/month
- ✓8,000 vault secrets
- ✓30,000 secret versions
- ✓500 API keys
- ✓Maximum crypto policy
- ✓Searchable encrypted storage enabled
- ✓Secure enclave workloads enabled
- ✓AI inference enabled
- ✓All published QNSI SDKs included
Three honest on-ramps, in the order most teams take them. Crypto-policy tier upgrades are configuration changes, so starting low is not a trap.
- Evaluating post-quantum for the first time? Start on the Free Forever tier and run live FIPS 203/204/205 operations from the public sandbox - no credit card, real keys, real quotas.
- Building against the APIs? DEV Starter adds the KMS and vault volume you need for integration work; SDKs on every registry are free on every tier.
- Production with regulated data? Business Advanced and above carry the strict crypto policy (level-3 floor, no classical fallback); Maximum and Government tiers add level-5 floors and HSM custody.
The tier-to-policy mapping in each plan’s feature list comes from the billing catalog - the same source the platform enforces.
- Features and APIs may evolve. Changes communicated via release notes.
- Standard email support is included. Priority, premium, dedicated-engineer, and compliance-SLA coverage require the applicable add-on or signed agreement.
- "Popular" and "Recommended" indicators reflect QNSI's editorial guidance on the most balanced starting point for each band - they are not derived from real-time customer-preference signals.
- Yearly pricing is exactly 12 times monthly pricing, with no automatic annual discount.
At a glance
What every plan includes
- $0Free tier10 GB · 50,000 API calls
- $150First paid tierper month
- 90PQC algorithms27 KEM · 63 signatures
- 4Policy tiersNIST floors 1 / 3 / 5 / 5
- 435/435ACVP vectorsliboqs 240/240
- 18Manifest-declared servicessource inventory
Compare
Monthly price by plan
The same canonical billing catalogue the pricing cards use. Enterprise Elite is sales-assisted and shown in the cards, not on a numeric axis.
Frequently asked questions
Frequently asked questions
How much does QNSI cost?
QNSI starts free forever - 10 GB PQC storage and 50K API calls per month, no credit card. Self-service plans run from $150/month (Dev Starter) through $25,000/month (Enterprise Pro). Enterprise Elite and specialized regulated deployments are sales-assisted.
Is the Free tier really free forever?
Yes. The Free tier is free for everyone - individuals, startups, and enterprises - indefinitely. No credit card required. No artificial time limit. You start with 10 GB encrypted storage, 50K API calls/month, 20 KMS keys, 25 vault secrets, and all SDKs (TypeScript, Python, Go, Rust, JVM/Android).
Are SDKs included on every plan?
Yes. All SDKs are free on every plan including the Free tier - one single-package SDK per language: @heossihq/qnsi on npm (TypeScript and CLI), qnsi on PyPI (Python), github.com/heossihq/qnsi-public/sdks/go/qnsi (Go), qnsi on crates.io (Rust), com.heossi:qnsi on Maven Central (JVM/Android), and qnsi-swift via Swift Package Manager (iOS/macOS; on-device PQC included, with com.heossi:qnsi-crypto covering JVM/Android device PQC). @heossihq/qnsi-mcp provides the published AI-assistant surface.
How does enterprise pricing work?
Enterprise Standard, Pro, and Elite tiers are subscription-based. Enterprise Elite and mission-critical tiers (Public Sector, Defense & Space, Critical Infrastructure) require a custom contract. Contact qnsi-sales@heossi.com to start the conversation.
Can I self-host or air-gap QNSI?
Yes. VPC, private cloud, on-premises, and air-gapped deployments are available on Enterprise Elite, Public Sector, Defense & Space, and Critical Infrastructure tiers. These require a custom deployment agreement.
What is HSM integration?
Enterprise tiers provide capability-gated customer HSM connectors. Integration is authorized only after the exact device and configuration pass qualification; any FIPS claim is limited to the vendor certificate scope for that deployment.
Start Free Today
10 GB quantum-secure storage · 50K API calls/month · all SDKs (TypeScript, Python, Go, Rust, JVM/Android). No credit card.
Enterprise & Custom
Custom contracts, private deployment, HSM integration, FedRAMP alignment. Talk to our team.
Talk to sales →Questions?
Compare plans, ask about compliance requirements, or get architecture guidance.
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