LM Studio 0.3.22

August 6, 2025·Build 2

0.3.22 - Release Notes

New in LM Studio 0.3.22:

  • 🎉 Support for OpenAI's gpt-oss models!
  • We partnered with OpenAI to bring their open-source models to LM Studio on launch day.
  • There are 2 models: gpt-oss-20b and gpt-oss-120b.
  • Learn more: https://lmstudio.ai/blog/gpt-oss

Build 2

  • Added support for more gpt-oss tool call edge cases
  • Fix bugs related to OpenAI Harmony library integration

Build 1

  • [gpt-oss] Bundle OpenAI/Harmony parsing framework on all platforms
  • [gpt-oss] More forgiving parsing of tool calls in chat
  • [gpt-oss] [OpenAI-compat API] Remove structural tokens (<|channel|>, <|end|>, etc...) from v1/chat/completions output
    • Should address issues seen with tools such as OpenCode
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