In the last 6 months:
- Helicone was acquired by Mintlify → maintenance mode
- Langfuse was acquired by ClickHouse → January 2026
Both tools are still usable. But the pattern
is clear: every LLM observability tool
eventually gets acquired or goes cloud-only.
For teams in regulated industries — healthcare,
finance, government — that's not acceptable.
Your prompts cannot leave your server.
So I built Ajah.
One docker-compose up. Everything runs on
your infrastructure:
- Gateway proxy — 9 providers, <2ms overhead
- Cost attribution — per user, per feature, per model
- PII masking — before anything hits storage
- Hallucination flagging — async, zero latency
- RAG verification — catches contradictions against your source documents
- Claim density scoring — flags responses with many specific claims on low-context prompts
- Prometheus /metrics — plug into your existing Grafana stack
- Multi-agent session tracing — visual step tree, per-step cost visibility
No cloud dependency. No vendor lock-in.
No acquisition risk.
MIT license. Free forever for self-hosted use.
→ github.com/VigneshReddy-afk/ajah
→ useajah.com
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