Exclusive: “Buying More [NVIDIA] B200s And Fixing Runtimes Are Orthogonal” – How INT21’s AI Swarm Killed Python, Outcoded Human Experts, And Rewrote the Drama 3 Runtime In 60 Minutes

INT21, a self-improving infrastructure startup that ‘uses compute to improve compute,’ has just refocused the proverbial spotlight on the software and away from the increasingly scarce NVIDIA GPUs, managing to dramatically speed up Fish Audio’s Drama 3 model by engineering customized inference runtimes in the Rust coding language via a swarm of AI agents that constructed a viable inference engine in just around an hour.

INT21’s unique methodology: AI swarms, Rust coding language instead of Python, and a looped workflow

INT21’s core methodology, one that pivots around ‘Self-Improving Infrastructure,’ flips the traditional software engineering paradigm on its head. Instead of human engineers painstakingly writing the code to run AI models, INT21 uses AI agent swarms to write, test, and optimize that code autonomously.

SwarmOS, a cloud-native platform that orchestrates thousands of AI agents simultaneously, is INT21’s secret sauce in this endeavor. These agents operate inside the Inference Engine Factory, a system dedicated strictly to building inference runtimes – the underlying software engine that executes an AI model after it has already been trained, turning user inputs into outputs. These inference engines load model weights into the hardware (GPU, TPU, CPU) and execute the mathematical forward pass to generate tokens, optimizing how fast and efficiently you can run the neural network to produce a faster output.

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