Benchmark for evaluating agents' ability to deliver working AI systems in realistic customer environments: 95 end-to-end delivery tasks with scripted stakeholders and production-like systems, scored by improvement to the customer's business metric and penalized for stakeholder contact.
Rewrites text-to-image prompts with reinforcement learning that aligns policy updates to semantic spans and pools log-probability shifts within each span to weight token losses. Improves prompt engineering for frozen generators without extra renders (≈9.5% on GenEval, 7.6% on T2I-CompBench).