xAI's mystery model 'Sol' spotted stealth-testing at 750 tps, rumored to drop soon

koltregaskes · x · 2026-09-03

A new model codenamed Sol has been spotted in stealth testing with inference speeds around 750 tokens/second, likely shipping imminently. Community speculation suggests a combined drop could include "Sol Ultrafast," Astra, Image 2.5 and a Cerebras mode — plus possibly another Codex usage reset. All unconfirmed rumors for now.

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