Side by side
Kosmoy AI Observability vs VoltOps
Both stand on ai agent observability tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Paid APISelf-hostedWeb
Kosmoy combines AI tracing, evaluations, and cost evidence with customer-controlled deployment. Teams should confirm instrumentation coverage and available provider pricing inputs before relying on every trace or cost measure.
Visit Kosmoy AI Observability Free plan APISelf-hostedWeb
VoltOps combines agent tracing with evaluation, prompt management, automation, and deployment tools. Its free Developer plan has defined seat, project, trace, and retention limits, while Core starts at $50 a month.
Visit VoltOpsThe facts
| Kosmoy AI Observability | VoltOps | |
|---|---|---|
| Free plan | No | Yes |
| Open source | Not published | Not published |
| Runs on | API, Self-hosted, Web | API, Self-hosted, Web |
| Lowest paid plan | Free or on request | Core: $50 a month |
| Plans published | 1 | 4 |
| Maker | Not published | Not published |
| Website | kosmoy.com | voltagent.dev |
| On ai agent observability tools | #30 of 31 | #26 of 31 |
Kosmoy AI Observability: what it does well
- Tracks multi-step agent trajectories
- Online and offline evaluations
- Supports major hosted and self-hosted providers
- Single-tenant Kubernetes deployment
- Cloud, on-premises, and air-gapped options
What to know first
- No free plan
- Pricing requires a request
- Trace completeness depends on instrumentation or routing
- Not a reconciled provider invoice
VoltOps: what it does well
- Traces calls, tool executions, and agent interactions.
- Alerts cover latency, errors, and token usage.
- Prompt changes can be rolled back or promoted.
- RAG supports uploads, Notion syncing, and website crawling.
- Free Developer plan includes 250 traces per month.
What to know first
- Developer plan retains data for seven days.
- Developer plan is limited to one seat and project.
- Enterprise pricing is custom and not listed.
Alternatives to Kosmoy AI Observability Alternatives to VoltOps The whole list