Instatus vs Tessary
Instatus and Tessary are both uptime & monitoring tools. Instatus is aimed at small businesses and developers, while Tessary is aimed at developers and small businesses. Both have a free plan.
Instatus
Fast, affordable status pages
Tessary
Open-source monitoring that finds why production AI agents fail
| Pricing | Freemium · $20 | Open source |
| Starting price | $20/mo | Not published |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Built for | Small businesses, Developers | Developers, Small businesses, Enterprise |
| Platforms | web | web, linux |
| Country | EG · 2020 | — |
| Rating | — | — |
Choose Instatus if
Startups wanting affordable status pages.
- Cheap
- Beautiful
- Fast
Look elsewhere if: Enterprises standardized on Atlassian.
Choose Tessary if
Engineering teams running AI agents in production with OpenTelemetry traces who want every trace checked and failures explained.
- Apache 2.0 open source with free self-hosting
- Checks every trace instead of a sampled subset
- RCA links failures to specific commits when a repo is connected
Look elsewhere if: Teams that want a mature, fully supported observability suite or an eval-first workflow (Datadog, Braintrust).
Instatus vs Tessary pricing
Instatus
- Starter$015 monitors, 2-min checks, 5 team members, 200 subscribers
- Pro$20/mo$15/mo billed annually; 50 monitors, custom domain, 5,000 subs
- Business$300/mo$225/mo billed annually; 1,000 monitors, SAML SSO
- EnterpriseCustomSCIM, 99.99% uptime SLA, custom contracts
Tessary
- Open Source$0Self-host with Docker Compose; all core features
- Cloud Free$010k traces/mo, 1 GB, 30-day retention, $10 one-time RCA credit
- PaidCustomCustom classifiers, managed dedicated instance, Slack support
Instatus · Key features
- Status pages
- Subscriber notifications
- Monitoring
- Incident updates
- Integrations
- Custom domain
Cons
- Smaller vendor
- Fewer enterprise features
- Monitoring basic
Tessary · Key features
- Classifiers run on every production trace with no sampling
- Built-in checks for drift, tool errors, secret leaks and malformed output
- LLM triage groups real deviations into trackable cases
- Root-cause analysis over failing traces and your GitHub repository
- OTLP ingestion over HTTP and gRPC with OpenTelemetry gen_ai conventions
- PII redaction before traces are stored
Cons
- Very new project with a short track record
- Paid plan prices are not published
- Frustration classifier requires your own OpenRouter or TypeSafe key
Instatus vs Tessary: FAQ
Do Instatus and Tessary have a free plan?
Yes, both Instatus and Tessary have a free plan; paid plans add more usage and features.