Anthropic unveiled Claude Sonnet 4.5, claiming top billing among AI coding tools as competition intensifies to capture developers’ workflows. Corporate demand for generative AI remains strongest in software engineering, according to Gartner, as companies deploy chatbots to handle boilerplate code and accelerate delivery. The tools are reshaping developer roles toward higher-level design, even as Anthropic cautions that accountability still rests with engineers and distances itself from the “vibe-coding” label. The Bay Area remains the epicenter of the arms race, with OpenAI, Google, Anthropic and a pack of startups vying for share. Startup turbulence underscores the stakes: coding-assistant upstart Windsurf reported rapid user growth, drew acquisition interest from OpenAI, saw its core team hired by Google, and was ultimately acquired by Cognition, maker of Devin.
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