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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 |
| OpenTelemetry-native | No (proprietary SDK/format) |
| 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 |
| GitHub stars | 2,822 |
| Maintenance | stale (2025-01-10) |
| License (GitHub) | Apache-2.0 |
| Open issues | 3 |
| Maturity signal | 57/100 (Growing) — computed from public GitHub signals, see methodology |
Pricing/feature source: https://whylabs.ai
Maturity signal is computed from public GitHub data only. How it is calculated.
Frequently asked questions
Is WhyLabs (whylogs/LangKit) open source?
Yes. Licensed under Apache-2.0.
Can I self-host WhyLabs (whylogs/LangKit)?
Yes — WhyLabs (whylogs/LangKit) can run in your own infrastructure.
Is WhyLabs (whylogs/LangKit) OpenTelemetry-native?
No — WhyLabs (whylogs/LangKit) relies on a proprietary SDK/format rather than native OpenTelemetry.
How much does WhyLabs (whylogs/LangKit) cost?
Free. Platform open-sourced under Apache-2.0 in Jan 2025; run on own infra