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Bayes Research

Changelog — Open Source

Releases, in the open.

Every model, tool, and study we ship is versioned and open. This is the running log — newest first.

  1. 2026 · 06 · 18Agent

    Bayes Agent 1.0

    v1.0.0

    The first stable release of the local-first reasoning agent: evidence intake from files and the web, a calibrated confidence meter on every answer, and belief updates that show their work.

  2. 2026 · 04 · 02Model

    Posterior-7B

    v0.7.0

    An open-weights reasoning model fine-tuned for uncertainty-aware answers. Reports calibrated probabilities instead of confident guesses, and abstains when the evidence is thin.

  3. 2026 · 01 · 27Tool

    Evidence Kit

    v0.4.0

    A toolkit for turning heterogeneous sources — PDFs, tables, transcripts — into structured evidence a reasoning agent can weigh and cite.

  4. 2025 · 11 · 09Research

    Calibration under distribution shift

    v0.2.0

    A study of how reasoning agents keep their confidence honest when the world moves away from their training data — with open benchmarks and reproducible code.