February 19, 2026

LM Studio 0.4.3

0.4.3 - Release Notes

Build 2

  • Fixed bug causing TypeError: Cannot read properties of undefined (reading 'backendInfo')

Build 1

  • Fix error when using Claude Code with LM Studio: "Invalid discriminator value. Expected 'enabled' | 'disabled'"
  • Failed downloads will now automatically retry with exponential backoff. This only applies to new downloads created after this update, so existing downloads will not be affected
  • Fix certain GGUFs being detected incorrectly, resulting in ?? arches and limited context lengths. Impacted unsloth/Qwen3-Coder-Next
  • Fix Step 3.5 reasoning parsing
  • Fix a cropped border visual bug on image attachments
  • Fixed a bug where the dropdown for selecting a model file sometimes cannot be opened
  • Fixed streaming REST endpoints sending headers after errors in /v1/responses and /v1/chat