{"data":{"id":"eb80af36-1825-4f0c-a94e-18d1e30e19de","title":"Building a multiplayer game world with autonomous Fable-class models","summary":"Jacob Sansbury describes how Spawn, a massively multiplayer game where players use prompts to Savi, an in-game AI, to modify the world, is developed autonomously by Fable-powered agents that change live code and ship to production hourly. He reports spending over $3 million per month on tokens, and says a security review applied with GPT-6 Astra disabled every feature until fixes were made.","solution":"N/A -- no mitigation discussed in source.","labels":["industry","research"],"sourceUrl":"https://simonwillison.net/2026/Oct/29/how-i-built-the-most-ai-pilled-company-in-the-world/","publishedAt":"2026-10-29T17:00:26.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":[],"issueType":"news","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":["Anthropic","OpenAI"],"affectedVendorsRaw":["Fable","Fable 5","Fable 5.1","Opus 5.5","GPT-6 Astra","Claude","Spawn","Savi"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":null,"headlinePromptVersion":null,"cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"epssCheckedAt":null,"kevDateAdded":null,"advisoryAliases":null,"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":null,"disclosureDate":"2026-10-29T17:00:26.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":null,"aiComponentTargeted":"agent","llmSpecific":true,"classifierConfidence":0.8,"researchCategory":null,"atlasIds":null}}