Navige vs Tessary
Navige and Tessary are both uptime & monitoring tools aimed at developers and small businesses. Both have a free plan.
Proxy that cuts AI agent model costs and stops runaway spending
Open-source monitoring that finds why production AI agents fail
| Pricing | Freemium · $9 | Open source |
| Starting price | $9/mo | Not published |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Built for | Developers, Small businesses, Enterprise | Developers, Small businesses, Enterprise |
| Platforms | web | web, linux |
| Country | GB · 2026 | — |
| Rating | — | — |
Choose Navige if
Teams running production AI agents with meaningful monthly model spend who want savings without rewriting their agents.
- Free observe-only tier that changes nothing in production
- Paid fee is tied to measured savings with a low $9 floor
- No SDK to adopt, only a base URL change
Look elsewhere if: Organisations that need certified vendors or full observability across their whole stack (Datadog, Sentry).
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).
Navige vs Tessary pricing
Navige
- Watchtower$0Observe-only, unlimited agents, weekly cost and savings report
- Savings$9/moMinimum; or 20% of measured savings, whichever is higher
- EnterpriseCustomContact sales
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
Navige · Key features
- One-line setup by pointing your SDK base URL at the Navige proxy
- Routing to cheaper sufficient models with fallback to your chosen model
- Caching and reuse of verified answers and tool results
- Context trimming and caps on bulky tool payloads
- Loop and failure guard that stops runaway jobs and duplicate calls
- Policies that allow, deny or hold tool calls for human approval
Cons
- All agent traffic depends on a young vendor's proxy
- No SOC 2 or ISO certification, per its own DPA
- Savings that set the fee are measured by the vendor
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
Navige vs Tessary: FAQ
Do Navige and Tessary have a free plan?
Yes, both Navige and Tessary have a free plan; paid plans add more usage and features.