Comparison · LLM Observability
LLM Observability & Evaluation Platforms Compared
An open, side-by-side comparison of LLM observability and evaluation platforms, the tracing-and-scoring layer that tells you whether your agents actually work in production. Capability facts are public and drawn from each provider; the rank is decided by the engineers who live in the dashboards, never by payment.
AI GatewaysBIMICDN & EdgeDMARCFinOpsHardened ImagesLLM ObservabilityPasskeysPost-QuantumProtective DNSSSOSBOMVPNZero TrustMore categories →
●The comparison facts on this page are open and drawn from each provider. The rank is decided by community votes, never by payment.
12 of 12 providers
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How to read thisEvery value comes straight from the provider's own site.Contact sales means they do not publish a price.Not disclosed or — means the spec is not stated on their site.We never fill blanks with guesses.
| # | Provider | Focus | Open source | Self-hostable | Free tier | Rating | Vote |
|---|---|---|---|---|---|---|---|
| 1 | BR Braintrust US | Evals | — | — | ✓ | ||
| 2 | GA Galileo US | Evals | — | ✓ | ✓ | ||
| 3 | CA Confident AI US | Evals | ✓ | — | ✓ | ||
| 4 | LA LangSmith US | Observability | — | ✓ | ✓ | ||
| 5 | LA Langfuse DE | Observability | ✓ | ✓ | ✓ | ||
| 6 | AP Arize Phoenix US | Observability | ✓ | ✓ | ✓ | ||
| 7 | HE Helicone US | Observability | ✓ | ✓ | ✓ | ||
| 8 | W& Weights & Biases Weave US | Observability | ✓ | ✓ | ✓ | ||
| 9 | CO Comet Opik US | Observability | ✓ | ✓ | ✓ | ||
| 10 | TR Traceloop US | Observability | ✓ | ✓ | ✓ | ||
| 11 | HO HoneyHive US | Observability | — | ✓ | ✓ | ||
| 12 | PR PromptLayer US | Prompt management | — | — | ✓ |
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How ranking works: facts are open; the order settles on community votes. See the full standings →
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