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Anthropic Releases Fable 5.2 and Mythos 5.2

Story 3, from Simon Willison

Anthropic has released Fable 5.2 and Mythos 5.2, with Fable 5.2 now ranked first on Artificial Analysis. The model can generate SVGs of pelicans riding bicycles, though it has a bug where max reasoning fails.

Key points

  • Fable 5.2 is ranked first on Artificial Analysis
  • Anthropic claims it solved two open problems in black hole physics
  • Fable 5.2 can generate SVGs of pelicans riding bicycles
  • Max reasoning level fails due to token limit issues
  • Pricing is $8/million input and $40/million output
  • Fable 5.2 was used to identify the source of a mysterious beep

Why it matters

As a software engineer, you may find Fable 5.2 useful for generating complex visual outputs or debugging issues, though its max reasoning level has known limitations.

Counterpoint

The max reasoning level fails due to token limits, which may limit its usefulness for complex tasks requiring deep analysis.

Sources

This summary was written by a language model and may contain errors. Read the original for the full story.

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