H2O.ai
1 model across 1 family · Latest: H2O-Lightning-4B (2026-10)
H2O.ai's portfolio covers 1 active model across 1 current family, spanning agents, vision, and json / tool use. Open a model detail page to compare provider routes and sourced benchmarks.
Covers 3 workload areas across 1 active tracked model; last verified 2026-10-12.
Use it for
- Teams evaluating agents, vision, and json / tool use across this lab's releases
- Comparing model families before committing to a flagship
- Migration and pricing follow-ups across 1 tracked models
Do not use it for
- Choosing a hosting provider without opening a model page for price ladders
Active models
1
Current models from this lab, excluding deprecated ones
Active families
1
Current model families from this lab
Open catalog
1 open
1 open source / 0 open weights
Lowest output price
Not tracked
No provider output pricing linked yet
Latest dated release
2026-10-02
H2O-Lightning-4B
Freshness
2026-10-12
Researched today
Information
Release cadence
- Dated releases
- 1
- Latest model
- H2O-Lightning-4B
- Latest date
- 2026-10-02
Where this lab wins
- Agentic: 1 tracked model with BFCL, tau-bench, and SWE-bench tool-use coverage.
- Vision: 1 tracked model with multimodal benchmark coverage.
- JSON/tool-use: 1 tracked model with BFCL / Nexus strict-JSON routing coverage.
Flagship quality / price signal
- Flagship
- H2O-Lightning-4B
- Selection source
- Best sourced coding Q/$
- Coding grade
- unknown
- Benchmark / output price
- Not enough sourced benchmark and price coverage
About
H2O.ai is an open-source machine learning company. In October 2026 it released H2O-Lightning-4B, an Apache-2.0 decision model fine-tuned from Qwen3.5-4B.
Featured models
| Model | Released | Context | Input price ($/1M) | Output price ($/1M) | License | Openness |
|---|---|---|---|---|---|---|
| H2O-Lightning-4B | 2026-10-02 | 40K | - | - | Apache 2.0 | Open source |
Model families
Recent releases
- H2O-Lightning-4B- 2026-10-02
Explore related pages
Last reviewed: 2026-10-12. Data sourced from public lab announcements and provider documentation.