Helicone
LLM observability platform
Yes!
This project appears to be free and open source software.
Details
The project is provided under an Apache 2.0 license.
The project used to advertise itself as open source under a commons clause, which limited use, but when raised the project was quick to address this by just using an Apache license instead.
The project appears to have raised over $500k from investors such as Alysia Silberg (Street Global), Coughdrop Capital, Flexcap Ventures, Realm Capital Ventures and Y Combinator.
Details last reviewed 2025-06-09.
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Please don't treat this as legal guidance or assurance of any kind.
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Found mistakes or outdated information? Let us know by opening an issue on Codeberg.