Anthropic launches Claude Fable 5.1 and says it’s up to 45 percent cheaper for agentic work

<figure> <img alt="" data-caption="" data-portal-copyright="Image: The Verge" data-has-syndication-rights="1" src="https://platform.theverge.com/wp-content/uploads/sites/2/2026/06/STKB364_CLAUDE_D.jpg?quality=90&#038;strip=all&#038;crop=0,0,100,100" /> <figcaption> </figcaption> </figure> <p class="wp-block-paragraph">Anthropic says its newest AI models, <a href="https://www.anthropic.com/claude-fable-and-mythos-5-1">Fable 5.1 and Mythos 5.1</a>, address criticisms from customers about price, data retention, and overzealous safeguards. The company claims <a href="https://platform.claude.com/docs/en/models/fable-5-1/whats-new-fable-5-1">Claude Fable 5.1</a> offers stronger performance than Fable 5, but costs around 25 percent less typically and up to 45 percent less for complex agentic tasks, thanks to reduced pricing on cached data that was already processed and stored.</p> <p class="wp-block-paragraph">Along with the announcement, a slew of early impressions popped up, including from Every CEO Dan Shipper, <a href="https://x.com/danshipper/status/2094848951568474186">who claims</a>, "It's the strongest coding model we've used, but now it's fast, token-efficient, and crucially actually speaks like a norm …</p> <p><a href="https://www.theverge.com/ai-artificial-intelligence/987830/anthropic-claude-fable-mythos-5-1">Read the full story at The Verge.</a></p>