Licensing
This project
The code in this repository (converters, GGUF writer/reader, CLI, inference kernels) is MIT licensed — see LICENSE in the repo root.
Model weights
Converting a model with zsfm <model> convert downloads the original weights from HuggingFace and re-encodes them as GGUF — it does not change who owns them or what license applies. Each model keeps the license its original authors published it under, and licenses vary quite a bit across this workspace’s 16 models. Check the table below before using a GGUF for anything beyond local experimentation.
| Model | License | Commercial use |
|---|---|---|
| Toto-2, Chronos-2, TimesFM 2.5, Sundial, TTM, Lag-Llama, Mitra, TabDPT | Apache-2.0 | ✅ unrestricted |
| MOMENT | MIT | ✅ unrestricted |
| TabICL | BSD-3-Clause | ✅ unrestricted |
| FlowState-R1 | Apache-2.0 | ✅ unrestricted |
| TiRex | NXAI Community License | ✅ unless your org’s annual revenue exceeds €100M and you ship TiRex in a commercial product/service (then a separate commercial license from NXAI is required) |
| Moirai 1.0, Moirai 2.0 | CC-BY-NC-4.0 | ❌ non-commercial only |
| TabPFN-3 | tabpfn-3-license-v1.0 | ❌ non-commercial only |
| TabFM | TabFM Non-Commercial License v1.0 | ❌ non-commercial only |
The non-commercial models
Three models — Moirai (both versions), TabPFN-3, and TabFM — are licensed for research, testing, and internal evaluation only. None of them permit production deployment, revenue-generating use, or offering the model (or its outputs) as part of a paid product or service. If you need any of those for a commercial use case, the license text for each (linked above) explains how to request a commercial license from the original publisher — zsfm has no involvement in that process.
TiRex’s revenue threshold
TiRex’s NXAI Community License is modeled on Meta’s Llama community license: free to use, modify, and redistribute — including commercially — for everyone except organizations whose consolidated annual revenue exceeds €100M and who are incorporating TiRex into a commercial product or service, who need to request a license from NXAI directly.
Everything else
The remaining 11 models ship under standard permissive open-source licenses (Apache-2.0, MIT, or BSD-3-Clause) with no commercial-use restriction.
If you’re unsure whether your use case qualifies under any of these, read the actual license file in the model’s HuggingFace repo (linked from each model’s page in Time-series forecasters / Tabular foundation models) — zsfm doesn’t attempt to interpret or enforce license terms for you.