{"data":{"id":"d4986b36-2375-446e-b642-2c48406ba869","title":"Claude Opus 5.5, GPT-6 Sol, GPT-6 Luna, and a new price war","summary":"Anthropic released Claude Opus 5.5 and OpenAI released GPT-6 Sol and GPT-6 Luna on the same day, with OpenAI's models arriving about an hour after Anthropic's. The new models carry lower per-token prices, with GPT-6 Luna at $0.10 input and $0.50 output per million tokens, and Opus 5.5 cut to $4 input and $20 output per million tokens.","solution":"N/A -- no mitigation discussed in source.","labels":["industry"],"sourceUrl":"https://simonwillison.net/2026/Sep/22/opus-and-sol-and-luna/","publishedAt":"2026-09-22T23:46:41.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":[],"issueType":"news","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":["OpenAI","Anthropic","xAI"],"affectedVendorsRaw":["Claude Opus 5.5","GPT-6 Sol","GPT-6 Luna","GPT-6 Astra","GPT-5.6 Luna","GPT-5.6 Sol","GPT-5.6 Terra","Grok 4.7","Claude Fable 5.1","Claude Sonnet 5.5","Claude Haiku 5.5","Haiku 4.5","GPT-4.1 Nano","GPT-5 Nano"],"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":"2026-09-22T23:46:41.000Z","fixReleasedAt":null,"daysToFix":null,"fixCheckedAt":null,"capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":null,"aiComponentTargeted":null,"llmSpecific":true,"classifierConfidence":0.9,"researchCategory":null,"atlasIds":null}}