{"data":{"id":"7622db27-0260-4cc3-92b5-97188660d742","title":"GPT‑6 Astra","summary":"GPT-6 Astra is a new AI model from OpenAI that started rolling out on September 3, 2026, to ChatGPT Plus users and through the OpenAI API, priced competitively at $10 per million input tokens and $50 per million output tokens. The model performs exceptionally well on security tasks and long-context processing (handling 256K-1M tokens, which are units of text that AI models process), scoring 100% on ExploitBench and 99.9% on the ARC-AGI 3 benchmark, though it trails behind Claude Fable 5.1 on some general intelligence measures. The model will be accessed via the API label 'gpt-6-astra' once fully available.","solution":"N/A -- no mitigation discussed in source.","labels":["industry"],"sourceUrl":"https://simonwillison.net/2026/Sep/3/gpt6-astra/","publishedAt":"2026-09-03T20:18:41.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":[],"issueType":"news","affectedPackages":null,"affectedVendors":["OpenAI"],"affectedVendorsRaw":["OpenAI","ChatGPT","GPT-6 Astra","Claude Fable 5","Claude Fable 5.1","Meta Muse Spark 1.3"],"classifierModel":"claude-haiku-4-5-20251001","classifierPromptVersion":"v3","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"patchAvailable":null,"disclosureDate":"2026-09-03T20:18:41.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":null,"aiComponentTargeted":"model","llmSpecific":true,"classifierConfidence":0.95,"researchCategory":null,"atlasIds":null}}