INT21
int21.ai
AI Research Labs
AI Development Tools
AI Compute & Inference
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Overview
INT21 builds self-improving AI systems for inference, GPU software, and research, including Inference Engine Factory, PTX Kernel Factory, and Swarm Research.
News
Pushing GPT-5.6-Sol from 13.3% to 100% on ARC-AGI-3 Public
SwarmOS pushed GPT-5.6-Sol from a 13.3% baseline to 100% RHAE on ARC-AGI-3 Public, showing how orchestration can multiply long-horizon agent capability.
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Addressing the Inference Bottleneck
INT21's agent swarms built live inference engines for video, music, and speech generation-without hand-built frameworks or human expert tuning.
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What Is Self-Improving Infrastructure? Defining a New Category
Self-Improving Infrastructure uses AI agent swarms to continuously improve the software AI runs on, making it faster, cheaper, and more reliable.
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What Muse Spark 1.1 Taught Us About Enterprise Agent Architecture
We ran Meta's Muse Spark 1.1 inside SwarmOS. The result shows why the durable enterprise advantage is the orchestration layer, not any single model.
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Stop Waiting for a Bigger Context Window
Bigger context windows don't solve long context; multi-agent orchestration does. Here's how we tackle workloads involving tens of millions of tokens.
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Introducing INT21 and PTX Kernel Factory
We are building self-improving AI systems for the software beneath modern AI. Our first product generates and optimizes low-level GPU software, then proves its work with tests and benchmarks.
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