Fable 5.1 Is #1—Worth a Look Over Sol or Grok?

Fable 5.1 just took the top spot on one widely watched independent AI index—but the real decision is more complicated than “number one.” In this comparison, we look at Claude Fable 5.1, GPT-5.6 Sol, and Grok 4.6 through three different lenses: vendor claims, independent results, and the measured cost of completing the test task. The key result as of September 1: • Fable 5.1 Max + fallback: 66 • GPT-5.6 Sol Max: 61 • Grok 4.6 High: 61 But Fable’s score changes significantly by effort setting, and the highest tested configuration carried a much higher measured index-task cost. Those figures are not subscription prices or universal bills—they are one evaluator’s task-cost measure. Which model should we test next—and what real job should we give it? If you want fast-moving AI news without the hype, like the video and subscribe to AI For Everyone Now. Your support helps this growing channel keep checking the sources. Chapters 00:00 Fable 5.1 takes #1—the real question 00:47 Anthropic’s case 01:31 Grok and Sol answer 02:10 The independent scoreboard 02:57 The measured cost catch 03:45 Access matters 04:20 Three practical lanes 04:58 The real-world test Sources Anthropic Fable 5.1 launch: https://www.anthropic.com/claude-fable-and-mythos-5-1 Fable 5.1 model overview: https://platform.claude.com/docs/en/models/fable-5-1/overview Claude plan access: https://support.claude.com/en/articles/15424964-claude-fable-models-on-your-plan Artificial Analysis Fable 5.1: https://artificialanalysis.ai/articles/claude-fable-5-1/ Grok 4.6 launch: https://x.ai/news/grok-4-6 GPT-5.6: https://openai.com/index/gpt-5-6/ Production note: This episode uses DJ’s approved stylized AI avatar and AI-assisted production. DJ selected and approved the story, shaped the comparison, reviewed the sources, approved the final edit, and controls publication. Human-directed, AI-assisted.