12 alternatives to PromptLayer in LLM Observability, Evaluation & Monitoring. 5 of them are tracked direct competitors.
| Company | Pricing | Open source | Funding |
|---|---|---|---|
| PromptLayerthis pagePrompt management and logging platform for LLM applications. | Freemium | No | Seed |
| Arize AIdirect competitorML and LLM observability platform for monitoring model performance. | Enterprise | No | Series B |
| Athina AIdirect competitorEvaluation and observability platform for LLM-powered products. | Unknown | — | Unknown |
| Humanloopdirect competitorPlatform for prompt management, evaluation, and LLM observability. | Enterprise | No | Series A |
| Pezzodirect competitorOpen-source prompt management and observability platform. | Freemium | Yes | Unknown |
| Weights & Biasesdirect competitorWidely used platform for experiment tracking and model/LLM evaluation. | Freemium | No | Series D+ |
| BraintrustEvaluation and observability platform for LLM applications. | Paid | No | Unknown |
| Comet MLML experiment tracking platform with LLM evaluation features. | Freemium | No | Series B |
| Confident AI (DeepEval)Evaluation platform built around the open-source DeepEval framework. | — | Yes | — |
| Datadog LLM ObservabilityDatadog's module for tracing and monitoring LLM applications. | Paid | No | Public |
| Fiddler AIAI observability platform for monitoring model performance and bias. | Paid | No | Series B |
| GalileoEvaluation and observability platform for LLM and agent quality. | Paid | No | Series A |
| GiskardOpen-source testing framework for ML and LLM model quality/safety. | Freemium | Yes | Seed |
Direct competitors are curated relationships in the index. The remaining entries share the LLM Observability, Evaluation & Monitoring category.