5W, the AI communications firm, today released *The Developer-Led Growth Playbook for AI & Robotics 2026*, which finds that enterprise AI procurement is now decided on X and GitHub six months before the RFP. The playbook documents that the individual developer evaluating an API on a weekend shapes the multi-million-dollar enterprise procurement decision six months later, with the buying process starting on X and in GitHub issues. The central finding is that developer communications is the enterprise motion six months earlier. The playbook outlines six shifts for 2026: the developer is the first buyer; X remains where AI discourse concentrates; GitHub functions as a product marketing channel; Hacker News and Product Hunt are the public stress test for AI launches; safety communications have become a growth function; and for robotics, video demonstration has overtaken every other content format. Three case studies anchor the playbook: Anthropic, Hugging Face, and Cursor. The playbook closes with a seven-step 90-day plan including SLAs for GitHub issue response, founder X cadence, Hacker News launch choreography, and developer-to-enterprise pipeline attribution.