Download Lemonade Server 11.5.1

Headline
- lemonade bench adds an image-generation benchmark mode with capability-aware scenario and model filtering, response capture, and a new --timeout flag.
- The Router Builder gains a Test Prompt tab, backed by a new POST /routing/validate endpoint, that runs a routing policy against a sample prompt and shows the decision, a step-by-step trace, and a decision-tree view.
- Ten MiniCPM text and vision GGUF models from ModelScope join the built-in llama.cpp catalog.
- Tool-calling requests to llama.cpp with large JSON schema bounds are now accepted, working around a grammar limit that previously rejected valid tool calls.
Breaking Changes
- llama.cpp non-streaming responses now return the requested or registered model id in the model field instead of the local .gguf absolute path.
- Registered and imported collections (user.*/extra.*) now list under their canonical prefixed id on /v1/models, Ollama /api/tags, and MCP lemonade_list_models.
- auto backend selection now prefers Vulkan on AMD systems across all engines, matching the llamacpp behavior.
Lemonade Server

| Operating System | Downloads |
| ------------------ | ----------------------------------------- |
| Windows | lemonade.msi |
| Ubuntu 24.04+ | Launchpad PPA |
| Debian 13 (x86_64) | lemonade-server_11.5.1-debian13_amd64.deb |
| Debian 13 (ARM64) | lemonade-server_11.5.1-debian13_arm64.deb |
| Fedora 43 (x86_64) | lemonade-server-11.5.1-fc43.x86_64.rpm |
| Fedora 43 (ARM64) | lemonade-server-11.5.1-fc43.aarch64.rpm |
| Fedora 44 (x86_64) | lemonade-server-11.5.1-fc44.x86_64.rpm |
| Fedora 44 (ARM64) | lemonade-server-11.5.1-fc44.aarch64.rpm |
| macOS | Lemonade-11.5.1-Darwin.pkg |

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.

| Platform | Download |
| ------------ | ---------------------------------------------- |
| Ubuntu x64 | lemonade-embeddable-11.5.1-ubuntu-x64.tar.gz |
| Ubuntu arm64 | lemonade-embeddable-11.5.1-ubuntu-arm64.tar.gz |
| Windows x64 | lemonade-embeddable-11.5.1-windows-x64.zip |
| macOS arm64 | lemonade-embeddable-11.5.1-macos-arm64.tar.gz |

What's Changed
Thanks @QuMuzafferEge, @QuTosh, @SlawomirNowaczyk, @ZMXJJ, @abn, @ckuethe, @coolduderules, @fl0rianr, @jeremyfowers, @kenvandine, @ramkrishna2910, @sujikathir, @superm1 for your awesome contributions to this release!
Click to expand changelog
- Update trellis checksums to the pinned v0.4.3 assets by @ramkrishna2910 in https://github.com/lemonade-sdk/lemonade/pull/2778
- web: community links in navbar hamburger + homepage hero by @jeremyfowers in https://github.com/lemonade-sdk/lemonade/pull/2784
- Bench imagegen by @ckuethe in https://github.com/lemonade-sdk/lemonade/pull/2683
- Add libgomp runtime dependency to deb/rpm packages by @kenvandine in https://github.com/lemonade-sdk/lemonade/pull/2794
- Fix: Repeated model update reports after pull by @fl0rianr in https://github.com/lemonade-sdk/lemonade/pull/2715
- [Router] Fix DirectoryWatcher missing policy delete+rewrite on Windows by @SlawomirNowaczyk in https://github.com/lemonade-sdk/lemonade/pull/2798
- Fix llama.cpp model field echoing local .gguf path by @SlawomirNowaczyk in https://github.com/lemonade-sdk/lemonade/pull/2796
- Add JSON schema checking to pre-commit by @superm1 in https://github.com/lemonade-sdk/lemonade/pull/2802
- fix(cli): parse configuration values as JSON arrays and objects by @abn in https://github.com/lemonade-sdk/lemonade/pull/2816
- Fix JSON pre-commit validation with permissive schema by @superm1 with @Copilot in https://github.com/lemonade-sdk/lemonade/pull/2810
- fix(http): add libcurl protocol fallback for macOS libcurl compatibility by @abn in https://github.com/lemonade-sdk/lemonade/pull/2806
- fix(custom_args): treat negative numbers as values, not flags by @coolduderules in https://github.com/lemonade-sdk/lemonade/pull/2773
- Issue 2651: Router Prompt Debugger (Ege Qutwo) by @QuMuzafferEge in https://github.com/lemonade-sdk/lemonade/pull/2726
- Add conformance tests (phase 1: deterministic) by @QuTosh in https://github.com/lemonade-sdk/lemonade/pull/2761
- Fix: list router/collection ids with their user./extra. prefix in GET /v1/models by @SlawomirNowaczyk in https://github.com/lemonade-sdk/lemonade/pull/2797
- Add ModelScope registry search blog post by @ramkrishna2910 in https://github.com/lemonade-sdk/lemonade/pull/2828
- Add MiniCPM GGUF models to catalog by @ZMXJJ in https://github.com/lemonade-sdk/lemonade/pull/2825
- fix(server): preserve WebSocket auth state and support desktop client origins by @abn in https://github.com/lemonade-sdk/lemonade/pull/2790
- Fix Whisper realtime test isolation and stale session work by @fl0rianr in https://github.com/lemonade-sdk/lemonade/pull/2821
- docs(telemetry): improve telemetry and arize phoenix setup guide by @abn in https://github.com/lemonade-sdk/lemonade/pull/2817
- fix(llamacpp): sanitize oversized tool schema limits by @sujikathir in https://github.com/lemonade-sdk/lemonade/pull/2807
- fix(ci): job-isolated process cleanups and fast installer teardowns by @abn in https://github.com/lemonade-sdk/lemonade/pull/2643
- Apply a canonical backend preference order to all descriptors by @jeremyfowers in https://github.com/lemonade-sdk/lemonade/pull/2835
- wg: Add an Enterprise Grade working group and archive Omni Models by @jeremyfowers in https://github.com/lemonade-sdk/lemonade/pull/2812
- Bump project version from 11.5.0 to 11.5.1 by @jeremyfowers in https://github.com/lemonade-sdk/lemonade/pull/2849
- Update flm NPU version to v0.9.46 by @jeremyfowers in https://github.com/lemonade-sdk/lemonade/pull/2847
- fix(installer): handle slow tarball listings by @sujikathir in https://github.com/lemonade-sdk/lemonade/pull/2830
New Contributors
- @QuMuzafferEge made their first contribution in https://github.com/lemonade-sdk/lemonade/pull/2726
- @QuTosh made their first contribution in https://github.com/lemonade-sdk/lemonade/pull/2761
- @ZMXJJ made their first contribution in https://github.com/lemonade-sdk/lemonade/pull/2825
- @sujikathir made their first contribution in https://github.com/lemonade-sdk/lemonade/pull/2807
Full Changelog: https://github.com/lemonade-sdk/lemonade/compare/v11.5.0...v11.5.1

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