Robert Lukoszko(@Karmedge):Based on tokenization, stealth/ox-alpha is a cl100k_base-tokenizer model — which rules out OpenAI, Google, Anthropic, xAI and every Chinese frontier lab and matches only Microsoft's Phi/MAI lineage (with IBM Granite as the outside bet) — so it is most likely Microsoft's unreleased MAI frontier model, i.e. "MAI‑2".

Robert Lukoszko

@Karmedge

Solving physical world ops at @stormy_hq | prev @fixkeyai (acq) | YC alum S24 | 🇵🇱

加入 May 2018

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Robert Lukoszko@Karmedge

2026.08.21 13:00

Based on tokenization, stealth/ox-alpha is a cl100k_base-tokenizer model — which rules out OpenAI, Google, Anthropic, xAI and every Chinese frontier lab and matches only Microsoft's Phi/MAI lineage (with IBM Granite as the outside bet) — so it is most likely Microsoft's unreleased MAI frontier model, i.e. "MAI‑2".

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