Soulstack™

Model platform

Hollow Kiln

In development

A fully local platform for building, training, evaluating, and operating language models.

Kiln is Hollow’s model platform: repeatable local training, evaluation, inference, agent execution, experiment tracking, and traceable artefacts built around one set of canonical interfaces.

Hollow Kiln

Model platform

Build locally

A model platform, not a model-shaped demo

Kiln keeps model work local and inspectable, from tokenizer and dataset through training run, checkpoint, evaluation, inference, and agent execution.

  • Repeatable training and evaluation workflows
  • Traceable datasets, checkpoints, and model lineage
  • A FastAPI backend, CLI, and React UI over the same interfaces
KilnThe platform
  • Training and evaluation
  • Local inference
  • Experiment tracking
  • CLI and web UI

Model families

Three directions, one careful platform

Kiln is developing Kindling, Ember, and Soot as distinct model families. The family pages explain the research direction without presenting checkpoints or pilots as finished releases.

  • Kindling, Ember, and Soot have separate roles and lineages
  • A trained checkpoint is not automatically a public release
  • Weights, data policy, licence, and limitations stay explicit
FamiliesThe work in progress
  • Kindling: small and efficient
  • Ember: primary family
  • Soot: open family
  • Release status stays explicit

What’s inside

Everything around the model matters

  • 01

    Training

    Local, repeatable runs with checkpoints and recovery.

  • 02

    Evaluation

    Capability measurement and regression tracking against recorded baselines.

  • 03

    Inference

    Model loading, generation, serving, and quantisation paths.

  • 04

    Agents

    Tool-using model runs with explicit permissions and recorded context.

  • 05

    Lineage

    Models carry the tokenizer, dataset, configuration, and run history that produced them.

  • 06

    Local first

    The platform is designed around local experiments and inspectable artefacts.

Build models with a complete record of how they came to be

Hollow Kiln is in active development. Its model families are documented as research work, not public downloads.

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