k3 Report Section Confirms Millions of Concurrent Sandboxes in Its RL Training Run

stochasticchasm · x · 2026-09-11

Posting the corresponding section of the k3 report, the author confirms details of its RL training scale: roughly 50 million sandboxes over the full run, with millions running concurrently. This is supplemental context to the same story.

Related event: k3 report details: 50M sandboxes and reasoning-effort control(2 posts)→

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