Hexel vs Kosmoy AI Observability
| Hexel | Kosmoy AI Observability | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | api | api, self-hosted, Web |
| Free plan | Yes | No |
| Trace retention | 30 days | — |
| Session replay | Yes | Yes |
| Deployment options | cloud | — |
| Agent framework support | sdk | sdk |
| Cost tracking | Yes | Yes |
| Prompt and tool tracing | — | Yes |
Both are listed in Best AI Agent Observability Tools. On Inferse, Hexel scores higher on our published basis.