Tech Companies are valued at a multiple of next 12 months revenue, not last 12 months revenue. Since anthropic grew from $1billion to $5billion in revenue in ~8 months, that means it ~10x'ed revenue y/y off of 1 billion base. If you assume even 60% of that growth is retained (low for traditional saas businesses, but who knows), then anthropic is ~10% of google in terms of revenue in mid ~2027.

Basically, 5x-ing revenue in 8 months off of a billion dollars starting revenue is insane. Growing this quickly at this scale breaks every traditional valuation metric.

(And no - this doesn't include margins or COGS).