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Rubra

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Rubra is an open-source tool designed for local development of AI assistants using a large language model (LLM). Conceived with developers in mind, Rubra offers the convenience and intelligence similar to working with OpenAI's ChatGPT.

It offers an opportunity to build AI-powered applications in a private, cost-effective manner by allowing developers to work locally, thereby bypassing the need for tokens for API calls.

Rubra includes built-in, fully configured open-source LLMs, and it mainstreams the development process for modern AI-powered agents that can interact and process data from multiple channels locally.

It includes a user-friendly chat UI for developers to interact with their models and assistants. Different from other model inferencing engines, it implements an OpenAI compatible Assistants API along with an optimized LLM.

It's designed with privacy in mind, as it executes all processes on the user's local machine, ensuring that chat histories and retrieved data never exit the local machine.

Furthermore, Rubra is not restricted to its local LLM; it also supports OpenAI and Anthropic models. Community participation is encouraged, with provisions for user contributions in form of discussions, bug reporting and code contributions on its Github repository.

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Pros & Cons


  • Open-source
    Cost-effective
    API calls without tokens
    Built-in LLMs optimized
    Multi-channel data processing
    User-friendly chat UI
    Operates on local machine
    Protects chat history privacy
    Github repository for contributions
    Integrated local agent development
    Encourages community participation
    Fully configured open-source LLM
    Interact with models locally
    Local assistant access to files
    Designed for modern agent development
    Supports local and cloud development
    LM Studio model inferencing
    Privacy-focused data handling
    Integrated chat interface
    One-command installation
    Local LLM optimized for development
    User access to files, tools locally
    Convenience similar to ChatGPT
    Knowledge retrieval never leaves machine


  • Local only - no cloud
    Not out-of-box ready
    Limited model support
    Community dependent updates
    Requires manual installation
    Assumes development proficiency
    No clear error reports
    Lack of professional support
    Limited UI customization
    Limited to text-based interactions

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