v11.5.1

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

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

New Contributors

• @QuMuzafferEge made their first contribution in #2726
• @QuTosh made their first contribution in #2761
• @ZMXJJ made their first contribution in #2825
• @sujikathir made their first contribution in #2807

Full Changelog: v11.5.0...v11.5.1

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