Alternatives to Langfuse
Other LLM tooling and evaluation vendors we measure, sorted by how much they publish that Langfuse does not. This is a comparison of disclosure, not of features or fitness.
12 shown of 27 that differ from Langfuse on at least one criterion we measured for both. Public transparency score, not a product or security rating.
Langfuse has 4 gaps in what we could measure: Status page with history, Uptime SLA with a figure, No third-party tracking before consent, security.txt (RFC 9116). The column “publishes and Langfuse does not” is the one that closes them.
| Vendor | Score | Publishes, and Langfuse does not | Langfuse publishes, and they do not | |
|---|---|---|---|---|
| Lakeralakera.ai | 35/100 | 1 Status page with history | 4 Data processing agreement, Subprocessor list, Data location stated, +1 | Compare |
| Freeplayfreeplay.ai | 17/100 | 1 Status page with history | 7 Data processing agreement, Subprocessor list, Data location stated, +4 | Compare |
| LastMile AIlastmileai.dev | 17/100 | 1 No third-party tracking before consent | 7 Data processing agreement, Subprocessor list, Data location stated, +4 | Compare |
| Confident AIconfident-ai.com | 48/100 | nothing we found there and not here | 3 Subprocessor list, Certifications named, Notice before subprocessors change | Compare |
| Openlayeropenlayer.com | 48/100 | nothing we found there and not here | 3 Subprocessor list, Public pricing, Named privacy contact | Compare |
| Fiddlerfiddler.ai | 43/100 | nothing we found there and not here | 3 Subprocessor list, Data location stated, Named privacy contact | Compare |
| Arizearize.com | 39/100 | nothing we found there and not here | 3 Data processing agreement, Subprocessor list, Notice before subprocessors change | Compare |
| Braintrustbraintrust.dev | 39/100 | nothing we found there and not here | 4 Subprocessor list, Data location stated, Certifications named, +1 | Compare |
| HiddenLayerhiddenlayer.com | 39/100 | nothing we found there and not here | 3 Data processing agreement, Subprocessor list, Public pricing | Compare |
| Lunarylunary.ai | 39/100 | nothing we found there and not here | 4 Subprocessor list, Data location stated, Certifications named, +1 | Compare |
| Patronus AIpatronus.ai | 35/100 | nothing we found there and not here | 4 Data processing agreement, Subprocessor list, Certifications named, +1 | Compare |
| Galileogalileo.ai | 30/100 | nothing we found there and not here | 5 Data processing agreement, Subprocessor list, Certifications named, +2 | Compare |
Only criteria we could measure for both are counted. Where we could measure one and not the other, the row is silent: that would be a statement about our measurement, not about either vendor. Every single result with its source is on the two profiles.