# Costly

Project, Worldwide.

> Open-source SDK that audits your LLM API costs
>
> — in its own words, from getcostly.dev

- Website: https://www.getcostly.dev/
- Listed since: 2026
- launched: 2026-03-14
- launch post: https://news.ycombinator.com/item?id=47381668
- hn score: 3
- domain created: 2026-03-10
- Last verified: 2026-03-14


## Sources

- Hacker News, "Show HN" — https://news.ycombinator.com/item?id=47381668, read 2026-03-14

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startup.is · https://startup.is/projects/costly · open data: /api/v1, /llms.txt