LM Studio 0.3.15

0.3.15 - Release Notes

New features and improvements in LM Studio 0.3.15:

• Support for NVIDIA RTX 50 series GPUs with CUDA 12
• Support for GLM4 models
• tool_choice parameter support in OpenAI-like REST API
• Tool streaming bug fixes
• UI touchups
• Preview: ability to publish and download presets from the community! (enable in Settings > General)

Build 11

• Llama 4 prompt template fixes to improve tool call reliability

Build 10

• Preview: Add the ability to publish and download presets from the community (head to Settings to enable)
• Add tool_choice parameter support to OpenAI-like REST API
  • "tool_choice": "none" - Model will not call any tools
  • "tool_choice": "auto" - Model decides whether or not to call tools
  • "tool_choice": "required" - Forces model to only output tools (llama.cpp engines only)
• Added an option to log each generated fragment to API server logs
• Fixed the erroneous "Client disconnected. Stopping generation..." message when using the API server
• Fixed a front end error when using the preset selection in the developer page
• Fix for GLM prompt template
• Fix Llama 4 prompt template bug "Unknown ArrayValue filter: trim" when using tools

Build 9

• Fix: Ensure OpenAI-like REST API chunk "finish_reason" is "tool_calls" when appropriate
• Fixes "N/A" token count in system prompt editor when model is loaded

Build 8

• Experimental feature behind flag in Chat Appearance, smooth autoscroll latest chat message to top

Build 7

• [CUDA12] Fix incorrect VRAM capacity showing on Hardware page on some machines
• Fix Llama 4 crashes when using GPU settings: priority order, limit offload to dedicated GPU memory
• [GGUF] Fixed bug where top-k sampling parameter could not be set to 0
• [MLX] Removed the checkbox from top-k sampling parameter

Build 6

• Chat terminal message styling updates
• Conversation font scale introduced in chat Appearance tab
• Conversation font weight introduced in chat Appearance tab

Build 5

• [CUDA] CUDA 12 engine auto-upgrade if driver is compatible and any GPU is 50-series and above
• [MLX] Add top-k sampler

Build 4

• New: CUDA 12 support in LM Studio's llama.cpp engines (Windows/Linux)
  • Dramatically faster first-time model load times on RTX 50-series GPUs
  • Initial compatibility requirements:
    • NVIDIA driver version:
      • Windows: 551.61 or newer
      • Linux: 550.54.14 or newer
    • At least one GPU of the following:
      • GeForce RTX 5090, RTX 5080, RTX 5070 Ti, or RTX 5070
      • Datacenter GPU with Hopper or Blackwell micro-architecture
  • App will automatically upgrade you if your machine is compatible
  • Check your system compatibility by running nvidia-smi in terminal
• Added support for sorting models by last load time in the model loader (the new default)
• Adds new system prompt editor UI
• Adds a toggle to hide/show advanced settings while loading models
• Fix Cogito jinja parsing error "Unexpected character: ~"
• Fixes downloads pane resize bug

Build 3

• Fixed lms CLI sometimes not initializing properly on MacOS

Build 2

• Fixes bug where the chat sidebar labels would overflow
• Fixes bug where the downloads pane would open at wrong position

Build 1

• UI touchups:
  • New and improved chat input box
  • Neatened up app action bar layout
  • Slimmer app sidebar
  • Chat sidebar segments: Context and Model