LangFast
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Changelog
New updates and improvements to LangFast.
January 28, 2026
Pro Mode
December 13, 2025
OpenAI GPT-5.2 models
December 9, 2025
Responses API support
November 10, 2025
Multimodality support
October 28, 2025
Prompt versioning and run history
October 7, 2025
Async prompt runs
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prompts that pass the tests
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