Flex – transpile natural language to a programming language
Flex [1] is a transpiler that converts a series of statements in natural language to either Python, Java or C++, and is trained using Rasa NLU [2], an open-source framework usually used for training chatbots and voice assistants. Flex is a project I made in college in 2018 along with two of my classmates, Gourav and Sanjay. The initial idea was to create a voice assistant you could speak to that wrote code for you, similar to GitHub's upcoming (and a lot more advanced) project "Hey, Github" [3]. We then had to reduce the project's scope to complete it in a single semester while writing…
Flex – transpile natural language to a programming language launched on November 10, 2022 with 10 votes, #1,252 of 3,471 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 3 years on.
In plain words
Flex is a transpiler that converts natural language statements into Python, Java, or C++ code. Built using Rasa NLU, an open-source framework typically used for chatbots and voice assistants, it takes text files written in plain language as input and generates valid executable programs. The tool was created as a college project designed with modularity to allow future expansion to additional programming languages.
written from the facts on this page · September 2026
From the sources
Implementation of Flex's transpiler using the NLU model trained using Rasa NLU - Flex-lang/transpiler
In the maker’s words, at launch
Flex [1] is a transpiler that converts a series of statements in natural language to either Python, Java or C++, and is trained using Rasa NLU [2], an open-source framework usually used for training chatbots and voice assistants. Flex is a project I made in college in 2018 along with two of my classmates, Gourav and…
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