The original AI model that pioneered ultra-long context. Process entire documents, books, and codebases in a single conversation. Free, no login.
Moonshot v1 is the original AI model from Moonshot AI that made headlines for its groundbreaking ultra-long context window. It was one of the first models to reliably process hundreds of thousands of tokens in a single conversation.
Moonshot v1 remains an excellent choice for document analysis, summarization, and research tasks where understanding large amounts of text is essential. Its focused design makes it particularly reliable for long-form content processing.
Yes — Moonshot v1 is free to use on chat-gpt.org. No login needed.
K2 is more advanced with better reasoning and tool use. Moonshot v1 is the proven original — reliable for document analysis and summarization.
Processing and analyzing long documents, research papers, books, and large codebases.
Moonshot v1 can process hundreds of thousands of tokens — equivalent to entire books or large codebases.
Excellent — it was specifically designed for understanding and summarizing long-form content.
Moonshot v1 was created by Moonshot AI, a Chinese AI company specializing in long-context AI.