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Comet is an open-source, self-hostable platform for agent tracing and evaluation, with a free plan and a listed starting price of $19. The options below cover adjacent needs, but not all are drop-in tracing replacements. Evidently AI is the closest evaluation fit; broader platforms trade focused observability for workflow, governance or infrastructure scope. Before moving production runs, confirm API and SDK coverage, usage limits, deployment requirements and export paths with each vendor.
01Why people leave Comet
Validate production usage limits
Comet has a free plan and a $19 starting price. Verify included usage and overage costs against your trace volume before production.
Check total cost at scale
A starting price alone does not show total spend. Ask how paid usage scales and what the free plan caps.
Confirm stack fit before switching
Compare the APIs, SDKs, self-hosted deployment path and export options you need; these shape migration work and future portability.
02The alternatives, ranked by fit
- Open-source evaluation
Evidently AIEvidently AIChoose Evidently AI when the core job is evaluation and monitoring, not a full agent-debugging suite. It is an open-source evaluation framework with self-hosted monitoring and a hosted dashboard; pricing starts at $80 with a free plan. Confirm agent-tracing coverage, SDKs, data export and usage caps before porting Comet workflows.
Trade-off: Its listed starting price is higher than Comet’s.
7.2/10from
$80/mofree plan - Governed AI workflows
DataikuDataikuDataiku fits teams replacing a single observability tool with workflow coordination and governance. It is self-hostable, connects AI workflows with governance, and has a free plan with custom pricing. Treat it as a platform migration rather than an API swap: establish how traces enter its workflows and ask about API details, deployment requirements and costs at your scale.
Trade-off: Custom pricing and unclear API details raise evaluation effort.
7.1/10from
Freefree plan - Hybrid AI governance
Anaconda PlatformAnaconda PlatformAnaconda Platform suits teams governing AI workflows across hybrid deployments, rather than only inspecting agent runs. It is self-hostable and aimed at organizations needing audit evidence. Public pricing and integration specifics are thin, so ask about API and SDK coverage, deployment boundaries and export paths before treating it as a Comet replacement.
Trade-off: Public pricing and integration specifics are thin.
6.5/10from
Custom - Data platform teams
DatabricksDatabricksDatabricks makes more sense when teams already run large data pipelines and want analytics and AI in one platform. It has a free plan, but its value depends on using enough of the stack to justify metered compute. Price the expected workload and verify how evaluation data fits your existing pipelines before choosing it over Comet.
Trade-off: Metered compute can complicate cost estimates.
7.2/10from
Freefree plan - Enterprise operations
Palantir AIPPalantir AIPPalantir AIP is aimed at enterprises automating operational workflows, especially organizations already using Palantir or with strict deployment requirements. It is self-hostable, but it is a full-stack platform rather than a simple API. Treat a switch from Comet as a platform-level integration project and clarify procurement and deployment requirements early.
Trade-off: Expect custom procurement and platform-specific integration.
6.5/10from
Custom - Operational AI programs
C3 AI PlatformC3 AI PlatformC3 AI Platform fits organizations governing operational AI or building sector-specific applications at scale. It is a broad enterprise platform, so consider it when those needs extend beyond agent tracing and evaluation. Pricing is custom, and integration questions raise the evaluation bar; ask for API details and a workload-based cost estimate before planning a migration.
Trade-off: Custom pricing and integration questions raise the bar.
6.3/10from
Custom
03Side by side
| Tool | Score | From | Free plan | Best for |
|---|---|---|---|---|
 Comet Comet (current) | 7.5 | $19/mo | Yes | Teams debugging LLM agents |
| Evidently AI Evidently AI | 7.2 | $80/mo | Yes | Teams adding evaluations to AI pipelines |
| Dataiku Dataiku | 7.1 | Free | Yes | Enterprise AI workflow coordination |
| Anaconda Platform Anaconda Platform | 6.5 | Custom | No | Organizations governing AI workflows |
| Databricks Databricks | 7.2 | Free | Yes | Teams running large data pipelines |
| Palantir AIP Palantir AIP | 6.5 | Custom | No | Enterprises automating operational workflows |
| C3 AI Platform C3 AI Platform | 6.3 | Custom | No | Enterprises governing operational AI |
Questions people ask
Which Comet alternative is open source?
Among these picks, Evidently AI is described as an open-source evaluation framework, with self-hosted monitoring and a hosted dashboard. Check its license terms and confirm that its agent-tracing features cover your use case before migrating; the open-source label alone does not establish feature or export parity with Comet.
Which alternative is cheaper than Comet?
The listed starting prices do not establish a cheaper replacement: Comet is from $19, while Evidently AI is from $80. Anaconda Platform, Dataiku, Databricks, Palantir AIP and C3 AI do not publish comparable starting prices here. Compare free-plan caps, paid usage and your expected workload with vendors.
Can I self-host a Comet alternative?
Evidently AI, Dataiku, Anaconda Platform and Palantir AIP are listed as self-hostable. Self-hosting does not by itself guarantee portability: ask each vendor about supported deployment options, APIs and data export. Confirm those details before moving historical traces or building new production integrations.