BONUS: Claude Fable 5.1 LIVE: Testing Anthropic’s New AI Agent

<p>Anthropic just released Claude Fable 5.1, its newest frontier model for long-running coding, research, and agentic work.</p><p><br></p><p>So naturally, we’re putting it to the test LIVE. 🤖</p><p><br></p><p>Early testing suggests Fable 5.1 is faster, easier to work with, and capable of handling massive coding projects, long-form writing, and autonomous agent tasks more efficiently. Every even found that it used less than half as many tokens as Opus 5 in one internal test.</p><p><br></p><p>But it has some quirks too. It can blow past word counts, create unnecessary subagents, and occasionally keep working when you tell it to stop.</p><p><br></p><p>Today, Grant and Corey from The Neuron are testing those claims for themselves.</p><p><br></p><p>We’re putting Fable 5.1 through:</p><p><br></p><p>🧠 Complex research and knowledge work</p><p>💻 Coding and long-running agent workflows</p><p>✍️ Writing, editing, and instruction following</p><p>🤖 Autonomous tasks where Claude runs on its own</p><p>🛑 Constraint, budget, and STOP tests</p><p>🆚 Whatever else the live chat wants us to try</p><p><br></p><p>Anthropic also cut cached-input pricing by 75%, potentially making long-running Claude agents significantly cheaper to operate.</p><p><br></p><p>Can Fable 5.1 actually become the model you hand a giant task and walk away from?</p><p><br></p><p>Let’s find out live.</p><p><br></p><p>UPDATE: Our write-up on this livestream, with time-stamps: https://theneuron.ai/news/claude-fable-5-1-can-do-the-work-the-hard-part-is-managing-it/</p><p><br></p><p>🔗 Anthropic announcement:https://www.anthropic.com/claude-fable-and-mythos-5-1</p><p><br></p><p>🔗 Every’s Fable 5.1 Vibe Check:https://every.to/vibe-check/fable-5-1-vibe-check</p><p><br></p><p>📩 Subscribe to The Neuron for AI news, tools, and practical experiments without the hype:https://theneuron.ai/</p>