gpt-5.6-sol

GPT-5.6 Sol is the flagship, top-tier large model in OpenAI’s GPT-5.6 family, forming a new-generation product lineup alongside the mid-range Terra and the cost-effective Luna.

Sol is specifically designed for highly complex agent tasks, ultra-long-term workflows, and advanced logical reasoning, representing the current industry benchmark for large models in terms of “high intelligence and robust resilience.”

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Core Capabilities

Superior Agent Resilience (Agentic Persistence): Sol’s most distinctive feature is its unwavering, autonomous persistence. In the widely recognized, high-difficulty multi-step agent evaluation—Agents' Last Exam (a long-term workflow test covering 55 specialized fields)—Sol achieved a new high score of 53.6 points, surpassing Claude Fable 5 by more than 13 points. When faced with failure, it doesn’t simply halt or fall into infinite loops; instead, it proactively overturns initial assumptions, replans its approach, and continues iterating.

ARC-AGI Disruptive Breakthrough: Sol is the world’s first model to conquer the notoriously challenging ARC-AGI-3 benchmark (general artificial intelligence abstract reasoning), scoring an impressive 87% on the FT09 task under maximum reasoning mode. It demonstrates human-like capabilities in autonomously exploring, reasoning, and self-positioning within completely unfamiliar hardware or logical rule environments.

Design Aesthetics and UI Self-Review: Sol has ushered in a qualitative leap in the field of system automation and computer use. Not only can it write fully functional frontend code, but it also possesses “visual self-review” capabilities—just like a human designer, it can proactively check the rendering effects of pages it generates, identify ergonomic or visual layout flaws, and autonomously reflect on and correct its code until delivering a perfect final product.

Industrial-Grade Full-Stack Coding Delivery: Specifically designed for enterprise-level, ultra-large-scale engineering projects, Sol can independently perform global breakpoint localization within tens of thousands of lines of complex, unfamiliar codebases, develop features across multiple files entirely autonomously, and perfectly adhere to intricate private tool integration standards—all without requiring frequent prompts from humans.