OpenAI

OpenAI LAUNCHES GPT-5.6 SOL MOST CAPABLE TERRA BALANCED & RELIABLE LUNA FAST & ACCESSIBLE SWIPE TO SEE WHAT IT'S CAPABLE OF OpenAI LAUNCHED GPT-5.6 is here 1) Now available GPT-5.6 is rolling out in ChatGPT starting today. 2) Three specialized models Sol for maximum capability, Terra for balanced performance, and Luna for speed and affordability. 3) Better at complex work Ultra mode leverages subagents to accelerate deep reasoning and multi-step tasks. 4) Smarter & more efficient Prompt caching with explicit breakpoints and a 30-minute minimum cache life. Sol is also coming to Cerebras at up to 750 tokens/sec in July. SWIPE FOR DETAILS 3/7 OpenAI Meet the GPT-5.6 lineup Three durable capability tiers built for different tradeoffs. SOL Flagship model Most capable $5 input / $30 output per 1M tokens TERRA Balanced model Everyday work $2.50 input / $15 output per 1M tokens LUNA Fast & affordable Lowest cost $1 input / $6 output per 1M tokens SWIPE FOR BENCHMARKS 2/7 OpenAI Sol sets the pace in coding workflows TerminalBench 2.1 GPT-5.6 Sol Ultra 91.9% GPT-5.6 Sol 88.8% Claude Mythos 5 88.0% GPT-5.6 Terra 84.3% Claude Fable 5 84.3% GPT-5.5 83.4% GPT-5.6 Luna 82.5% Claude Opus 4.8 78.9% Gemini 3.1 Pro Preview 70.7% Sol Ultra tops the chart, with Sol also outperforming the field. SWIPE TO SEE WHAT SOL BUILDS NEXT 4/7 OpenAI Stronger biology performance with fewer tokens GENEBENCH V1 GPT-5.6 Sol GPT-5.6 Terra GPT-5.6 Luna GPT-5.5 Sol beats GPT-5.5 while using fewer output tokens. 5/7 OpenAI EXPLOITBENCH Cyber capability moves forward GPT-5.6 Sol GPT-5.6 Terra GPT-5.6 Luna GPT-5.5 GPT-5.4 Mythos 5 Opus 4.8 Opus 4.7 Sol is competitive with Mythos Preview while using about one-third of the output tokens. 6/7 OpenAI GUIDE Which model should you use? SOL Best for the hardest problems, deep reasoning, and frontier agentic work TERRA Best for everyday copilots, balanced performance, and strong value LUNA Best for fast responses, high- volume apps, and budget-conscious deployments Same family, clearer tradeoffs across intelligence, speed, and cost. 7/7 OpenAI POWERED BY GPT-5.6 ChatGPT Work launched too 1) A new agent for work Takes action across your apps and files and can stay with complex projects for hours. 2) GPT-5.6 makes it stronger State-of-the-art for multi-step reasoning and creating materials that follow your templates and reference files. 3) Creates real deliverables Can build slides, sheets, docs, and Sites from the tools and workflows you already use. 4) Rolling out today Web and mobile start today for Pro, Enterprise, and Edu. Plus and Business follow in the next few days. The updated desktop app is available globally today on Mac and Windows, with Chat, Work, and Codex on every plan - including Free. 4/8