Anthropic is likely to tell ​investors that it ​sees its total addressable market (TAM) ​exceeding $30 trillion, ahead of the $28.5 trillion estimate from SpaceX , the Wall Street Journal reported on Tuesday.TAM ‌is ⁠the annual ⁠revenue opportunity available if a product or ​service achieved 100% market share in its relevant ​market.Here are a few details:To quantify its TAM, Anthropic is looking at ​the full scope of ⁠work that ‌could be completed with ​AI models, ​WSJ said.Anthropic did ⁠not immediately respond to a Reuters request for ​comment.A large TAM would ​justify Anthropic's valuation and heavy infrastructure spending, guide product priorities, frame its rivalry with OpenAI and Google, and anchor the growth story behind its planned IPO.SpaceX, in its May IPO filing, said it has identified ​the "largest ​actionable TAM ⁠in human history," attributing most of it to AI technology.The Claude chatbot maker is ​projecting 2028 revenue of roughly $190 billion to $200 billion, with its IPO valuation hinging on those forecasts, Reuters reported earlier this month.