Pricing
$1 an hour, per twin.
That is the rate for the time a twin spends up and serving requests, billed by the second. Idle sandboxes are free, requests are free, seats are free, and a month where you run nothing costs nothing. Scenario seeding is metered on its own.
No monthly fee · No minimum · No per-seat charge
Free
$0forever
Point a test suite at a twin and keep the sandbox as long as you like.
Start building- 10 twin-hours a month
- Unlimited sandboxes, idle for free
- Every twin in the catalog
- Editable records and the full request log
- Community support
Pay as you go
$1per twin-hour
Runtime at the rate above. No seats, no minimum, no monthly fee.
Start buildingEverything from Free, and:
- Unlimited twin-hours, billed by the second
- Scenario seeding, metered on its own
- A spend cap you set
- Sandboxes in parallel, no shared ceiling
- Email support
- Early teams keep their launch rate
Enterprise
Customannual
For teams running twins in CI at volume, under their own controls.
Talk to salesEverything from Pay as you go, and:
- A volume rate on twin-hours
- Private twins built for your providers
- Twins self-hosted in your own VPC
- SSO and SAML
- An uptime SLA
- A shared Slack channel
Free for academic researchers, and early teams keep their launch rate as Twinbay grows.
| Free | Pay as you go | Enterprise | |
|---|---|---|---|
| Twin-hours included | 10 / month | Unlimited | Volume rate |
| Scenario seeding | Not included in Free | Metered separately | Metered separately |
| Team members | Unlimited | Unlimited | Unlimited |
Core | |||
| Sandboxes | Unlimited | Unlimited | Unlimited |
| Idle sandboxes kept free | Included in Free | Included in Pay as you go | Included in Enterprise |
| Twins in the catalog | All | All | All, plus private |
| Sandboxes in parallel | 2 | Unlimited | Unlimited |
| Seed a scenario from a sentence | Not included in Free | Included in Pay as you go | Included in Enterprise |
| Start from a scenario template | Not included in Free | Included in Pay as you go | Included in Enterprise |
| Request log retention | 7 days | 30 days | Custom |
Fidelity | |||
| Verified against the vendor SDK | Included in Free | Included in Pay as you go | Included in Enterprise |
| Provider-format API keys | Included in Free | Included in Pay as you go | Included in Enterprise |
| Editable records | Included in Free | Included in Pay as you go | Included in Enterprise |
| Vote on the next twin | Included in Free | Included in Pay as you go | Priority |
| A twin built for your provider | Not included in Free | Not included in Pay as you go | Included in Enterprise |
Security and admin | |||
| A spend cap | Not needed | Included in Pay as you go | Included in Enterprise |
| SSO and SAML | Not included in Free | Not included in Pay as you go | Included in Enterprise |
| Self-hosted twins | Not included in Free | Not included in Pay as you go | Included in Enterprise |
| Support | Community | Shared Slack channel | |
| Uptime SLA | Not included in Free | Not included in Pay as you go | Included in Enterprise |
| Start building | Start building | Talk to sales | |
Questions about the bill
Anything else, email hello@twinbay.ai and a human will answer.
Live · console.twinbay.ai
Start with one base URL.
Create a sandbox, describe the state you want it in, and point your existing SDK at the hostname it gives you. The sandbox logs each request your agent makes, and you can edit any record it holds.
Start buildingA sandbox in under a minute, no card required. Twinbay is free for academic researchers.