Letta v0.5.1 Release Aging

Published: October 23, 2024 | Original Post

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Key Features

External Tool Integration

Auto-load tools from Composio, CrewAI, and LangChain by setting LETTA_LOAD_DEFAULT_EXTERNAL_TOOLS=true.

Inner Thoughts Configuration

New put_inner_thoughts_in_kwargs field in LLMConfig for models like GPT-4o-mini that require inner thoughts as keyword arguments.

Authentication Changes

The Admin feature has been deprecated. Letta no longer mandates authentication for server and ADE usage. Agents now receive default user assignments automatically.