Anthropic is a San Francisco AI safety company founded in 2021 by ex-OpenAI researchers. Its flagship product, Claude, powers chat, coding, and enterprise AI tools, backed by a $965B valuation.
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xAI is the company Elon Musk founded in 2023 to build the Grok chatbot. SpaceX acquired xAI in February 2026 and folded it into a division called SpaceXAI, though Grok itself keeps shipping new releases.
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Perplexity AI runs a cited, real-time answer engine backed by NVIDIA and Jeff Bezos at a $20 to 23 billion valuation, and now ships Comet, a free AI browser.
OpenAI is the research and deployment company behind ChatGPT, GPT-5.6, and Codex. See what it costs, whether it trains on your data, how stable the company is, and how it compares to Claude, Gemini, and Perplexity.