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Anthropic · Series B

AI safety lab building Claude — a helpful, harmless, honest AI assistant.

Amount

$704M

Round

Series B

Valuation

$4.1B

Announced

Apr 2022

Investors

Lead investor

Spark Capital

Participating investors

Other Anthropic rounds

Date Round Amount
Feb 2026 Series G $30B Details →
Sep 2025 Series f $13B Details →
Mar 2025 Series e $4B Details →
Nov 2024 Series D $4B Details →
Sep 2024 Series d $3.5B Details →
Dec 2023 Series C $7.3B Details →
Sep 2023 Other $5B Details →
May 2021 Series A $124M Details →