INT21 AI

Try INT21 Inference Engine Factory’s Engineering Samples

Our self-improving agent swarms orchestrate the entire inference stack generation end-to-end: CUDA PTX kernels, mega kernels, a Rust CUDA driver, and serving integration. The entire stack is designed and optimized from first principles, with no PyTorch, kernel-library abstractions, or inference frameworks.

Try a sample engine for free:

  • MiniMax H3 (8× B200)
  • MiniMax Music 3 (2× H100)
  • FishAudio S2 Pro (1× H100)

Each user gets 2 free generations every 24 hours. Generation requests may not be accepted when there are more than 100 requests in the queue.

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Diagram comparing traditionally built inference layers with an INT21 swarm-generated stack

Model FishAudio S2 Pro

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Generation details

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Created
Inference time
Duration