Frontier LLM reportedly from Anthropic, priced at $10/M input and $50/M output tokens; details unverified.
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Fable (referred to as Fable 5 High or Fable 5.0) is a large language model that YouTube creator Matthew Berman describes as Anthropic's frontier model. No official page could be fetched, so the vendor attribution and all details below rest on creator statements and are unverified.
According to the creator, the model is the most expensive in his workflow, which he uses for research, spec writing and pull-request review. He quotes pricing of $10 per million input tokens and $50 per million output tokens. In a comparison with GPT-5.6, he says Fable feels like a new training run that "sees around corners" better, whereas GPT-5.6 is the peak of an existing model.
The creator also says the model was released and then pulled after a couple of days, after the US government reportedly asked that it not be provided to non-US citizens. Reports of prompt-hacking followed. These claims have not been confirmed against official sources, and current availability is unclear.
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A newer model compared against GPT-5.6. The creator says it feels like a brand new training run that sees around corners better, while GPT-5.6 is the peak of an existing model. It is priced at $10 per million input tokens and $50 per million output tokens.
Frontier, most expensive model ($10/M input, $50/M output) used for research, spec writing and PR review in the creator's workflow.
Anthropic's frontier model, described by the creator as the best on the planet. It was released and then pulled after a couple of days when the government asked that it not be given to non-US citizens, and prompt-hack reports followed.
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