Skip to content

A research foundation that publishes what it runs.

Cortex Foundation trains models, publishes them with their evaluations, and builds the products that serve them — Chat, Code, Bot, Design, and Security.

Explore the researchView the models
named model: Cortex Mini 1
1
publications & research notes
2
SAST rules published with the checker
11
year Cortex Foundation was established
2026

Publish the work.Make the limits explicit.

The people

Small team, public work.

  • Mara Voss

    Co-founder, research

    Leads model development and the evaluation harness. Previously distributed systems.

  • Jules Arnaud

    Co-founder, engineering

    Builds the Code isolation host. Believes diffs are documentation.

  • Sofia Reyes

    Research, evaluations

    Owns the benchmark suite and the failure reports.

  • Théo Lambert

    Design engineer

    Draws the prairie, one pixel at a time.

Know the workbefore you use it.

Three ways in: assess the models against their published evals, follow the research, or go straight to integration docs.

Milestones

  1. Foundation announced — Chat opens free, no account

    The research lab becomes a public-interest foundation.

  2. Cortex Mini 1 weights published with evals

    The first weights land on the open web, evals included.

  3. Deep Research opens — 80 sources, every citation public

    Multi-source reports where every citation is inspectable.

More milestones as the work continues.

Follow the research

Start with a model.

Review its card, its evaluations, and its limits before choosing a use.

View the models