The Financial Times reports that Anthropic's flagship Claude Fable 5 has met with sluggish demand from corporate clients, even as cheaper AI tools thrive. The Mythos-class model, positioned as Anthropic's best, is struggling to attract users at a time when enterprises are rethinking what they will pay for frontier intelligence.

The story lands in the middle of an industry price war. Anthropic has cut Claude Opus prices in half as businesses balk at the bill, and benchmarks suggest Claude Opus 5 matches or beats Fable 5 on several tests at roughly half the token price. Meanwhile rivals including DeepSeek V4, Google's Gemini Flash line and xAI's Grok 4.6 keep improving fast, giving procurement teams credible options far below flagship price points.

The contrast with consumer demand is striking. Claude has suffered outages amid surging usage in recent days, with Anthropic investigating multi-model errors after a demand spike. But paying enterprises look more price sensitive, trading down to models that are good enough for most workloads. For founders, the lesson is that raw capability matters less than cost per useful token. The market keeps rewarding the cheapest model that clears the quality bar, and even a frontier lab's best model now has to justify its premium against a fast-moving field of cheaper alternatives.