The Grin Labs began with a knowledge curation phase — working with the FinTech company to extract, structure, and centralize the institutional expertise that had previously lived with individual stakeholders across Bulgaria and London. That knowledge base became the foundation for Custom GPTs configured to generate RFP responses governed by the firm's own response rulesets and quality standards. Rather than routing each RFP request through multiple siloed experts with communication latency across time zones, the system pulls from the unified knowledge layer and produces tailored, contextually relevant responses tuned to the specific customer's procurement language and priorities. The build ran within a 4–8 week window without requiring custom model training or complex infrastructure. Response time dropped from 38+ hours to 8–12 hours — a 70–80% reduction — and key-person dependency across time zones was effectively eliminated. The unexpected outcome: the client team described the AI-generated RFPs as among the best they had ever submitted, combining speed with the specificity that generic AI tools can’t provide without institutional knowledge grounding.