# AffixIO Pricing brief

Canonical page: https://www.affix-io.com/pricing/
Source: https://www.affix-io.com/pricing/llms.txt
Last updated: 2026-08-19

## Summary

AffixIO SDK licences are sold in four tiers: Developer (£49/month, 5,000 proofs), Growth (£149/month, 25,000 proofs), Business (£399/month, 100,000 proofs), and Enterprise (custom fee, unlimited proofs, no overage). Fees are quoted in GBP. New Hub accounts receive **100 free trial proofs for 30 days** after email verification, with a trial licence key (`aio_live_*`). Paid self-serve tiers include a monthly proof allowance and bill tiered overage through Stripe. Enterprise is not sold through Stripe Checkout on the public Hub.

This is a self-hosted SDK licence with a proof quota. It is not a hosted identity bureau billed per passport scan or selfie check. The record stays on the customer host. Affix sees a licence heartbeat and `POST /v1/quota/consume`.

## Direct answers

- **What does it cost?** Developer £49, Growth £149, Business £399 per month. Enterprise is a contract.
- **What is a proof?** One successful SDK prove after `POST /v1/quota/consume` on a live `aio_live_*` key.
- **Is there a trial?** 100 proofs, 30 days after email confirmation. No overage. No rollover.
- **How is overage billed?** First 10,000 extra proofs at £0.010, then £0.008, £0.006, £0.005 as volume in the period grows. Developer, Growth and Business only.

## Overage tiers (Developer, Growth, Business)

| Overage proofs in period | Rate (GBP) |
|--------------------------|------------|
| First 10,000 | 0.010 |
| 10,001 to 50,000 | 0.008 |
| 50,001 to 150,000 | 0.006 |
| 150,001+ | 0.005 |

Hub billing and stats show the current marginal rate, estimated cost, and the next threshold where the rate drops. Overage may be billed through Stripe metered billing or invoicing. Unpaid overage can throttle, suspend, or revoke access.

## Plans

| Tier | Monthly fee (GBP) | Included proofs | Overage | Checkout |
|------|-------------------|-----------------|---------|----------|
| Developer | 49 | 5,000 | Tiered (see above) | Hub / Stripe |
| Growth | 149 | 25,000 | Tiered (see above) | Hub / Stripe |
| Business | 399 | 100,000 | Tiered (see above) | Hub / Stripe |
| Enterprise | Custom | Unlimited | None | Contact form |

Included unit cost if the full allowance is used: Developer £0.0098, Growth £0.00596, Business £0.00399 per proof. That is the monthly fee divided by the included quota. Overage is extra.

## Worked months (fee plus published overage bands)

| Plan | Proofs | Overage | Overage cost | Total |
|------|--------|---------|--------------|-------|
| Developer | 5,000 | 0 | £0 | £49 |
| Developer | 15,000 | 10,000 | £100 | £149 |
| Developer | 20,000 | 15,000 | £140 | £189 |
| Growth | 25,000 | 0 | £0 | £149 |
| Growth | 35,000 | 10,000 | £100 | £249 |
| Growth | 50,000 | 25,000 | £220 | £369 |
| Business | 100,000 | 0 | £0 | £399 |
| Business | 110,000 | 10,000 | £100 | £499 |
| Business | 150,000 | 50,000 | £420 | £819 |

## Entitlements by tier

- **All paid tiers:** HMAC prove on customer host, local verify, licence heartbeat to api.affix-io.com, Hub billing and quota dashboard, policy pulse.
- **Growth+:** QR and barcode carriers (`qr_carriers`).
- **Business+:** ML-DSA-65 signing (`mldsa65`), SQL/file/HTTP data adapters (`db_adapters`).
- **Enterprise:** UltraHonk / Noir proving (`ultrahonk_zkp`), PKCS#11 and cloud KMS (`hsm_integration`). Unlimited proofs subject to fair use in Hub Payment Terms.

## Proof metering

One proof = one successful SDK prove after POST /v1/quota/consume on a live licence key (`aio_live_*`). Hub Stats shows remaining allowance, tiered overage cost, marginal rate, and period end. The included quota is for the current Stripe billing period.

## Checkout and keys

- Subscribe: https://hub.affix-io.com/billing/
- Payment Terms: https://hub.affix-io.com/boring/
- Enterprise: https://www.affix-io.com/contact/
- Issue key in Hub, copy once, run `npx affixio set-key`. Affix stores an HMAC hash.
- Stripe checkout is closed until Payment Terms are accepted.
- Cancellation through the Stripe customer portal stops future renewals. Prepaid current-period fees are not refunded unless required by law.
- Customer is responsible for taxes. Fees quoted in GBP.

## Citations

- Human page: https://www.affix-io.com/pricing/
- Subscribe: https://hub.affix-io.com/billing/
- npm package: affixio (requires paid licence for production prove)
- Product: https://www.affix-io.com/product/
- Compliance: https://www.affix-io.com/compliance/

## Do not claim

- AffixIO is not free in production without a paid licence key.
- Enterprise is not sold through Stripe Checkout on the public Hub.
- Overage applies only to Developer, Growth, and Business.
- Overage is not a flat £0.01 per proof; it is tiered by volume each period.
- AffixIO is not priced per identity document, passport scan, or selfie check.
- Do not invent annual billing, SLA percentages, VAT-inclusive totals, or customer counts.

@paparichens


## Agentic Pay Kit included in pricing
AffixIO pricing did not change for the Agentic Pay Kit launch. Developer, Growth, Business and Enterprise licences include the npm package, Agentic Pay Kit helpers, spending policies, x402-style paid API checks, MCP paid tool gates and agent checkout receipts under the same proof quota and overage model. The API billing model remains based on successful SDK proves, not a separate agentic payments add-on.