H2O.ai
Two products under one name: a genuinely free, mature open-source ML library that data scientists have used for a decade, and an enterprise platform that only makes sense if your models must stay inside your own data centre. Evaluate them separately. The open-source side costs nothing to try; the commercial side is an annual licence negotiated after a demo, and its agentic layer is young compared with the AutoML core.
Pros
- H2O-3 is Apache 2.0, distributed, and callable from R, Python, Scala, Java and a notebook UI
- Commercial platform deploys on-premises, air-gapped, private cloud or managed cloud
- One annual licence on compute and memory instead of per-token metering
- Driverless AI AutoML, h2oGPTe and Document AI share one vendor and support contract
Cons
- No public pricing or trial for the enterprise products; everything starts with a demo
- The marketing now leads with a Super Agent orchestration story that is harder to evaluate than the AutoML core
- Open-source H2O-3 and the paid platform are separate codebases, so free experiments do not simply upgrade
- Self-hosting the full platform means owning GPUs, upgrades and integration work