# OpenAI DevDay 2026: What Developers Need to Do Now > Source: > Published: 2026-10-07 14:09:30+00:00 OpenAI held DevDay on September 29th and launched more than 20 products. Most recaps listed all of them. This one covers the four that will change how you build — and one you can safely ignore for now. Sol’s Cached Pricing Changes the Agentic Cost Equation GPT-6.1 Sol is getting coverage as a cheaper Astra alternative. That’s true but it’s not the real story. The real story is the cached input price: $0.10 per million tokens. If you’re running any agentic loop — system prompts, tool definitions, conversation history that gets reused — you’re caching most of your context. At […] The post