Anthropic: Claude Fable Latest

Claude Fable Latest is a text, image, and file model from Anthropic with a 1-million-token context window and a 128,000-token output ceiling. It supports tool use and reasoning, making it applicable to multi-step workflows and agentic tasks. Structured output support is unconfirmed based on available data. At $10.00 per million input tokens and $50.00 per million output tokens, this sits at the higher end of the market, and the output cost in particular will add up quickly in generation-heavy workloads. There is currently no independent benchmark coverage to validate performance claims, so buyers would be committing to an unproven model on price alone. Teams with existing Anthropic integrations or specific requirements around long context and reasoning may find it worth evaluating, but cost-sensitive users or those needing third-party performance evidence should compare alternatives before committing.