Since we launched Prime Agent [1] in August, it has been downloaded more than 300,000 times and has processed over 8 trillion tokens. Today, we're excited to ship a faster, cleaner and more reliable Prime Agent, rewritten from the ground up in Rust.
Over two weeks, Prime Agent orchestrated a swarm of over 2,000 agents to rewrite itself end to end, operating across 10,000+ Prime Sandboxes with over 200 billion tokens from Prime Inference’s GLM-5.3 endpoint. The Rust rewrite stress-tested Prime Agent’s multi-agent capabilities, including the sandbox and inference infrastructure we’ve been building to power large-scale agent swarms, autonomous research, and reinforcement learning.
To ensure feature parity with the TypeScript version, Prime Agent orchestrated subagents to topologically sort dependencies, with finite state machines structuring looped computations and correctness checks. In parallel, we rewrote the code architecture for easier maintenance and development. We then used runtime benchmarks and real Prime Agent traces to hillclimb performance metrics and triage bugs. Now, Prime Agent runs faster and uses fewer resources than most coding agent harnesses.
