lemonade-sdk/lemonade candidate-v2026.45.0

v2026.45.0 (release candidate)

on GitHub

Headline

⚠️ These notes are AI generated and will be revised by a human ⚠️

• GUI3 desktop client rewritten with six workspaces — Chat, Models, Backends, Apps, Monitor, Settings — including a visual router policy editor and Chinese localization.
• New model catalog entries for GPT-OSS 20B MXFP4, Qwen3-Coder 32B, and K2-Horizon family (0.9B through MoVA-36B-A4B) across chat, coding, and reasoning use cases.
• HTTP server refactored into a route-class architecture with drift-protected generated API docs and a new GET /internal/routes inspection endpoint.
• Model manager rebuilt with lock-free store snapshots, checkpoint status tracking, and a new /internal/model-sources endpoint for external consumers.

Breaking Changes

⚠️ These notes are AI generated and will be revised by a human ⚠️

• The resolved_ctx_size field returned by GET /v1/models/{model}/options can now be null instead of a numeric value when automatic context sizing cannot fit a valid context — clients that parse it as an integer will need to handle the null case.
• GET requests to previously-404 POST-only paths (slots/{id}, jobs/{id}/pause|interrupt|resume, models/register) now return 405 Method Not Allowed instead of 404 Not Found — clients checking for 404 on these paths should update their error handling.
• A request missing the model field now raises 'Missing model field in request' consistently across all model routes (chat/completions, completions, embeddings, responses, rerank) — clients relying on the previous inconsistent error messages will need to update their parsers.
• Form-encoded requests with invalid field types (for example, a non-numeric temperature on a transcription endpoint) now return 400 Bad Request instead of 500 Internal Server Error — clients catching 500 for malformed form data will not see the error.
• Streaming responses include a cancel token that stops the server from sending data after a TCP disconnect — clients that depended on the server continuing to flush buffered data after a disconnect will see the stream terminate early.

Lemonade Server

Other platforms? See our Installation Options for Docker, Snap, Arch, Debian, and more.

Embeddable Lemonade

Portable binaries for bundling into your own installer. Run lemond ./ as a subprocess.

What's Changed

Thanks @QuTosh, @bernardogv, @bitgamma, @fl0rianr, @github-actions, @iswaryaalex, @jeremyfowers, @lucbruni-amd, @meghsat, @mike2307, @ramkrishna2910, @ramkrishs, @sawansri, @sreeram-11, @superm1, @zaneni6 for your awesome contributions to this release!

New Contributors

• @bernardogv made their first contribution in #3895
• @lucbruni-amd made their first contribution in #3939
• @mike2307 made their first contribution in #3955
• @ramkrishs made their first contribution in #3972

Full Changelog: v2026.43.3...candidate-v2026.45.0

The Windows installers in this release candidate are not signed; Windows SmartScreen will warn before installing. Stable releases are signed.