Gray Swan AI

Confirmed the $40M Series A (May 28, 2026), co-led by Wing and Madrona with Obvious Ventures, Snowflake Ventures, Hudson River Trading, Samsung Next, and existing Magarac, via both the official announcement and finsmes/multiple press (investors kept 'confirmed', last_round 'confirmed'). No seed amount is publicly disclosed, so total_raised was corrected to $40M disclosed (removed the speculative '+'). This is the correct company matching 'adversarial evaluation arenas' (Arena crowdsourced red-teaming network). Customer logos all originate from the vendor's own homepage = self-claimed; only Anthropic, OpenAI, Meta (named in the press release plus 11 system-card citations) and UK AISI (joint challenge corroborated by NIST CAISI) are retained as 'verified'; DeepMind and xAI remain self-claimed logos. Headcount sources diverge (PitchBook 29, Tracxn 59, LinkedIn ~75); downgraded band from 51-200 to 11-50 since most signals are under 50 for a fresh Series A startup. Founding year conflict (2023 vs 2024, launch July 2024) flagged rather than asserted. Andy Zou's co-founder status rests only on Tracxn and is absent from the company's own team page - flagged unconfirmed. SOC 2 Type II and Cyber Essentials confirmed present on trust.grayswan.ai (kept 'reported' as the page is gated). Removed 'computer use environments' from focus_areas as unsupported.