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The Jac programming language and Jaseci runtime stack supersets Python with AI-first constructs, object spatial programming, and scale-native constructs.

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What is Jac?

Jac is a drop-in replacement for Python and supersets Python, much like Typescript supersets Javascript or C++ supersets C. It maintains full interoperability with the Python ecosystem, introducing new features to minimize complexity and accelerate AI application development. We also provide library mode.
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Why Choose Jac?

            
        

    


    
    

        

            

                

                    
Built by Nerds and Innovators

                    
~ Imagine, Create, Launch ~

                


                

                    
                    

                        

                            Jac is an innovative programming language that extends Python's semantics while maintaining
                            full interoperability with the Python ecosystem. Created by @marsninja
                            with contributors of Jac Hackers Everywhere,
                            it introduces cutting-edge programming models and abstractions specifically designed to
                            minimize
                            complexity and embrace AI-forward development.
                        

                        

                            Our mission is to automate categories of common software systems that typically require
                            manual implementation, making advanced programming paradigms accessible to developers
                            worldwide.
                        

                    

                


                

                    

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                        Story
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An Intellectual Journey

                    
~ The story of an idea realized ~

                


                

                    

                        

                            Prologue: In 2020, the concept of a new way of developing software in the AI era is
                            concieved and later described in a Forbes blog article.
                            

                            What’s In Store For The Next Generation Of AI? The
                                    Jaseci Perspective
                        

                        

                            In 2022, the idea has evolved and the first intellectual step in the journey of Jaseci and
                            Jac is described.
                            

                            The
                                    Case for a Wholistic Serverless Programming Paradigm and Full Stack Automation for
                                    AI and Beyond -- The Philosophy of Jaseci and Jac
                        

                        

                            Then in 2023, the idea survives peer-review at Computer Architecture Letters.
                            

                            The
                                    Jaseci Programming Paradigm and Runtime Stack: Building Scale-out Production
                                    Applications Easy and Fast
                        

                        

                            In 2024, the idea that AI should be a conventional code construct in the language is
                            conjoured and ellucidated.
                            

                            LLMs
                                    are Meaning-Typed Code Constructs
                        

                        

                            Then in 2025, the idea survives peer-review. (pending)
                            

                            Meaning-Typed Programming: Language Abstraction and Runtime for
                                    Model-Integrated Applications
                        

                        

                            That same year, "data-spatial programming" described in earlier works becomes
                            "object-spatial programming" and is rigorously defined.
                            

                            Object-Spatial Programming
                        

                        

                            And, in 2025, the notion of "scale-native programming" through langauge abstraction is
                            rigorously defined though it was first described in the original 2022 paper.
                            

                            Extending Object-Spatial Semantics for Scale Native
                                    Programming
                        

                        

                            And the journey continues...