Try it free for 7 days. Then choose how it runs.
Start Ermes with AI compute included and no card required. After the trial, BYO will be the first paid plan at $20/month with your connected ChatGPT. Hosted is coming soon and is not available to purchase.
Paid checkout is temporarily closed while we complete the production billing setup. No paid plan can be purchased right now.
Try Ermes
Meet your agent and try its core experience before choosing a paid plan. Ermes supplies the AI compute during the trial.
- No card required
- AI compute included for 7 days
- Context, memory & routines
- Managed private infrastructure
- Choose a paid plan only if you want to continue
Choose where your agent's AI compute comes from.
BYO is the launch plan: connect the ChatGPT subscription you already have and pay Ermes for the product and managed private infrastructure. Hosted is a future option and remains unavailable until its production service is ready.
BYO · $20/month
Connect your own active ChatGPT subscription. The plan includes Ermes and its managed private infrastructure; ChatGPT supplies the AI compute under the limits of your existing subscription.
Hosted · planned at $40/month
The planned Hosted plan would include Ermes, managed private infrastructure and API-backed AI compute, without requiring a separate ChatGPT subscription.
In detail
| What's included | BYO · $20/mo | Hosted · Coming soon | 7-day trial · free |
|---|---|---|---|
| Personal AI agent with context and memory | ✓ | ✓ | ✓ |
| Managed private infrastructure | ✓ | ✓ | ✓ |
| Routines that carry work forward | ✓ | ✓ | ✓ |
| AI compute | Your connected ChatGPT | Planned: included | Included for 7 days |
| Own ChatGPT subscription required | Yes | Planned: no | No |
| Price | $20/month | $40/month planned | $0 |
| Cancel any time | ✓ | — | — |
The bits people always ask first.
What does the $20 BYO plan cover?
It includes Ermes and the managed private infrastructure that runs your agent. You connect your own active ChatGPT subscription, which supplies the AI compute under that subscription's limits.
What does the $40 Hosted plan cover?
Hosted is planned at $40/month, but it is not available to purchase. The planned service would include Ermes, managed private infrastructure and API-backed AI compute.
Do I need my own AI account to try it?
No. AI compute is included during your 7-day trial, and no card is required to start. You only need an active ChatGPT subscription if you choose the BYO plan afterward.
Do you ever see my conversations?
Your agent runs in managed private infrastructure designed to keep its context isolated. Ermes processes the data needed to operate the service as described in our privacy and security documentation.
What does the private server itself cost?
Nothing extra. Managed private infrastructure is included in the $20 BYO plan. It is also intended to be included in the future Hosted plan.
What happens after the 7-day trial?
When paid checkout is open, you can choose BYO for $20/month and connect your ChatGPT. Otherwise the trial ends without starting a subscription. Hosted is not available yet.
Can I cancel any time?
Yes. You can manage or cancel a paid subscription from your billing settings.
Want in? See if it sticks.
Free for 7 days with no card. BYO is the $20/month launch plan; Hosted is coming soon.
Get your free agent