The most lightweight experiment management tool that fits any workflow.
neptune.ai has raised €10M across 2 funding rounds from 4 investors, most recently a Series A round in Apr 2022. Based in Warsaw, Poland; founded 2017; active in Software. Acquired by OpenAI in 2025. Data as of 7 Aug 2026.
| Date | Stage | Amount | Investors | |
|---|---|---|---|---|
| 2022-04-13 | Series A | €7.4M | Almaz Capital,btov Partners,Rheingau Founders,TDJ Pitango Ventures | View deal → |
| 2020-01-28 | Series A |
| €2.7M |
| btov Partners |
| View deal → |
