Pricing
Two ways to pay: a flat monthly subscription, or pay-as-you-go (PAYG) per call. Settle in USDC.e on COTI V2 mainnet (canonical, no premium) — directly from your wallet, or via a gasless signed-permit email if you don’t hold COTI for gas.
Subscription tiers
| Tier | USD / mo | Remembers / mo | Recalls / mo | Sharing contracts / mo | Audit retention |
|---|---|---|---|---|---|
| Pro | $5 | 25,000 | 2,500,000 | not included — see Pro Fast or PAYG | 1 year |
| Pro Fast | $9 | 250,000 | 25,000,000 | 500 contracts | 1 year |
| Enterprise | $500 floor + SLA | unlimited | unlimited | not included — see Enterprise Fast or PAYG | bespoke (default 7 yrs) |
| Enterprise Fast | $1,500 floor + SLA | unlimited | unlimited | unlimited | bespoke (default 7 yrs) |
Pro overage above tier is billed at 2× the PAYG rate.
Pay-as-you-go (PAYG)
No subscription. Each call settles on-chain at write time.
| Operation | USD / call |
|---|---|
| Remember | $0.01 ($1 per 100 writes) |
| Recall | $0.005 ($1 per 200 reads) |
| Forget (cryptographic erasure) | $0.01 ($1 per 100 forgets) |
| Sharing — TEMPORARY (under 24 hours, limited) | $1.00 / grantee |
| Sharing — PERMANENT | $10.00 / grantee |
| Sharing — SYNDICATE | $25.00 / grantee |
PAYG break-even vs Pro ($5/mo): Remember at 500 writes/month; Recall at 1,000 reads/month. Below those volumes, PAYG is cheaper than Pro on the corresponding operation. Pro’s value is in its 1-year audit retention and dedicated call quota; sharing contracts are a Fast-tier or PAYG feature.
PAYG audit retention: 30 days. Longer retention requires a subscription tier.
Billing and refunds
All payments are final. Subscriptions and pay-as-you-go calls are non-refundable. Cancel anytime to stop the next renewal; the current paid period continues to its end with no further charges.
Sharing tier-gate
| Tier | Sharing | Allowance |
|---|---|---|
| Pro | no | not included — use Pro Fast or PAYG |
| Pro Fast | yes | 500 contracts/mo |
| Enterprise | no | not included — use Enterprise Fast or PAYG |
| Enterprise Fast | yes | unlimited |
| PAYG | yes | per-grantee (see PAYG table) |
A share grants the named grantee read access to a specific cell only. Receiving a share does not change the grantee’s own subscription tier and does not confer re-share rights; only the original cell-holder may extend or revoke access.
Payment methods
You can settle in any of the following:
- USDC.e on COTI V2 mainnet (canonical, no premium): the bridged USD Coin already native to COTI V2. Pay your tier address directly.
- Gasless via signed permit (email): sign a message in your wallet (off-chain, zero gas), email it to join@saihm.coti.global, and your tier settles in USDC.e on-chain with no gas paid by you. See below for a brief overview, or the developer guide for the full mechanics.
Tier selection is performed by your AI agent on your behalf — you say “Join SAIHM at the Pro tier” and it handles the rest.
Decision matrix
Side-by-side comparison of the two settlement options. Pick what matches what you already hold.
| Method | Premium | Customer gas | Prerequisite | Typical wall-clock | Best for |
|---|---|---|---|---|---|
| Direct USDC.e on COTI V2 | none | customer pays | USDC.e + small COTI (for gas) on COTI V2 | seconds (one transaction) | buyers who already hold COTI for gas and want on-chain control |
| Gasless via signed permit (email) | none | zero | USDC.e on COTI V2 (no COTI required) | a few minutes | buyers who hold USDC.e but no COTI, or don’t want to manage gas |
Coming from Ethereum L1? See below for the bridging-in path. Mechanics of the gasless permit flow are in the developer guide.
Coming from Ethereum L1?
If you hold USDC on Ethereum L1, self-bridge it to USDC.e on COTI V2 via Hyperlane Nexus, then your tier payment in USDC.e settles normally. SAIHM does not orchestrate the bridge — you sign the bridge transaction and pay the bridge fee, the same way you would for any cross-chain transfer.
If you hold a different Ethereum stablecoin (USDT, DAI, etc.), swap to USDC on Ethereum first using any DEX of your choice, then bridge as above. The swap is your decision, your DEX, your transaction; SAIHM is not in the swap path.
Verified route: Ethereum L1 USDC → Hyperlane Nexus → USDC.e on COTI V2 (mainnet-verified bidirectional, 2026-04-29).
What SAIHM does: accepts your USDC.e payment on COTI V2 once it arrives at your tier address. What SAIHM does not do: custody on Ethereum, hold balances on Ethereum, sign your bridge transaction, or perform a swap on your behalf.
Only USDC.e on COTI V2 mainnet settles your tier. Assets that arrive in any other form — USDT, DAI, native ETH, native COTI sent to a USDC.e tier address, or anything bridged to a non-USDC.e contract — will not credit your account. If you are unsure, complete the bridge first, verify the asset on mainnet.cotiscan.io as USDC.e at the contract 0xf1Feebc4376c68B7003450ae66343Ae59AB37D3C, and then send to your tier address.
Gasless via signed permit (email)
What: sign a message in your wallet (off-chain, no gas), email the signed envelope to join@saihm.coti.global, and SAIHM’s relayer settles your tier on-chain in USDC.e at zero customer gas. Mainnet-validated 2026-05-05.
Best for: you already hold USDC.e on COTI V2 but don’t want to manage COTI for gas.
For the full mechanics — the JSON envelope schema, what the signed message authorises, failure modes, and the on-chain attestation reply — see the developer guide.
Compliance reports
Compliance reports are a separate ancillary service, priced per report and tier-agnostic. See compliance-reports for the available kinds, prices, authorization paths, and example outputs.
Snapshot
Rates above are the snapshot effective 2026-05-07 (W2.16 ratification).