On March 14, 2023 — the same day OpenAI released GPT-4 — Anthropic publicly launched Claude 1.0, its first commercial large language model. Founded in 2021 by Dario Amodei, Daniela Amodei, and five other former OpenAI researchers who departed over safety concerns, Anthropic built Claude around Constitutional AI, a training approach designed to make models more honest, harmless, and helpful. Claude's launch introduced a major safety-focused competitor into the frontier AI market, establishing a distinct institutional position that AI safety and capability need not be in opposition.