WhyLabs (whylogs/LangKit)
Profile-based monitoring (whylogs) plus LangKit LLM metrics that summarize data locally so raw prompts never leave your infrastructure.
| Category | Observability & Tracing |
| Open source | Yes |
| Self-hostable | Yes |
| Pricing model | free |
| Pricing notes | Platform open-sourced under Apache-2.0 in Jan 2025; run on own infra |
| Framework integrations | openai-sdk, langchain |
| Funding / ownership | AI2 spin-out; pivoted to open source in 2025 |
Pricing/feature source: https://whylabs.ai