AI article
Alleged Mythos Class Anthropic Checkpoint Leak
Hacker News | Nov 1, 2026 | explosion-s
Automated excerpt
Internal codename numbat, Anthropic's next Mythos-class training run. numbat is the codename referenced in the Claude Code source leak (Mar 2026). This is a checkpoint from that training run, The 772 shards total ~7.72 TB of tensor data. The raw BF16 training weights plus optimizer state never leave the cluster.
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