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Claude Fable 5 is the flagship of Anthropic's Claude 5 family - their most intelligent generally available model, built for deep reasoning, natural writing and serious coding work. ai-chat.pro is an independent workspace powered by Anthropic's newest models through the official API - one subscription instead of several.
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Claude Fable 5 is the first model in Anthropic's Claude 5 family, positioned above Claude Opus in capability. It is Anthropic's most intelligent generally available model.
Deep multi-step reasoning, natural prose, careful editing and demanding coding tasks. For quick simple questions a faster Claude model like Haiku is often the better pick.
The trial is just $1. Paid plans start at $29.99 per month and include the Claude lineup along with OpenAI's GPT models.