OpenAI has launched GPT-5.6, its most powerful model to date, featuring three tiers: Sol (flagship), Terra (balanced), and Luna (cost-effective). The new model introduces an "ultra" mode that coordinates multiple agents for parallel processing and "Programmatic Tool Calling" for more efficient tool integration. GPT-5.6 demonstrates significant improvements in coding, knowledge work, and cybersecurity, surpassing previous benchmarks and models like Claude Opus 4.8. Additionally, OpenAI released ChatGPT Work, an agent-driven tool capable of performing multi-hour tasks across applications and files to produce finished products, alongside enhanced safety features. AI
IMPACT Sets a new benchmark for AI model capabilities, potentially accelerating enterprise adoption of agent frameworks and advanced AI tools.
RANK_REASON Frontier-lab model release with system card and detailed capabilities. [lever_c_demoted from frontier_release: ic=1 ai=1.0]
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