{"data":{"id":"e029c28f-5315-4e29-9eed-ff777c5151b9","title":"The new GPT-5.6 family: Luna, Terra, Sol","summary":"OpenAI released three new language models called GPT-5.6 (Luna, Terra, and Sol, in order of size) that are available to the public as of July 9th, 2026. These models have a one-million token context window (the amount of text they can consider at once) and perform particularly well on long-running agent tasks (workflows where an AI works independently over many steps), outperforming competitors like Claude Fable 5 at lower cost. OpenAI also added new API features including programmatic tool calling (letting the model write and execute code to coordinate different tools), multi-agent support (spawning smaller AI instances to work in parallel), and prompt cache breakpoints (explicit markers for caching repeated input text).","solution":"N/A -- no mitigation discussed in source.","labels":["industry"],"sourceUrl":"https://simonwillison.net/2026/Jul/9/gpt-5-6/#atom-everything","publishedAt":"2026-07-09T19:46:38.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":[],"issueType":"news","affectedPackages":null,"affectedVendors":["OpenAI"],"affectedVendorsRaw":["OpenAI","GPT-5.6","Claude Opus","Claude Fable 5","Anthropic"],"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":"2026-07-09T19:46:38.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"trivial","impactType":null,"aiComponentTargeted":null,"llmSpecific":true,"classifierConfidence":0.95,"researchCategory":null,"atlasIds":null}}