# spanlens — LLM observability in one line. Monitor cost, latency, and tokens across OpenAI, Anthropic, and Gemin

```yaml
url: "https://forg.to/projects/spanlens"
website: "spanlens.io"
category: "Monitoring & Observability"
platforms: "Web"
product_type: "Open Source"
pricing: "Freemium"
upvotes: 43
updates: 0
maker: "HAESEONG JEON"
created: 2026-06-04
launched: "2026-06-06"
```

## About spanlens

Spanlens gives LLM developers full visibility into their AI apps: request logs, cost tracking, and agent tracing. Just swap your OpenAI baseURL and start seeing every call, token, and dollar in real time.

## Platforms

- Web

## Open Source

Source: https://github.com/spanlens/Spanlens

## Keywords

`LLM observability` · `LLM monitoring` · `AI cost tracking`

## Team

- [HAESEONG JEON](https://forg.to/@haeseong) (owner)

## Links

- Website: spanlens.io
- GitHub: https://github.com/spanlens/Spanlens
- Twitter / X: https://x.com/spanlens
- Documentation: https://www.spanlens.io/docs
- Forg: https://forg.to/projects/spanlens

---
Listed on [Forg](https://forg.to) — the professional network for builders

_HTML version: https://forg.to/projects/spanlens_