DevDay radar: GPT-6 Sol and Agents API expansion
The author rounds up trusted sources and public signals to list what may land around DevDay, including GPT-6 Sol, Agents API, sandboxes and MCP tunnels.
I’ve spent the past few days gathering what I can about OpenAI’s plans around DevDay, combining information from people I trust with public signals across OpenAI docs, GitHub commits, API schemas, and recent product changes. Here’s the current radar: → GPT-6 Sol → Agents API expansion → OpenAI-hosted sandboxes → persistent agent sessions → dynamic model / reasoning / service-tier switching → Secure MCP Tunnels → Vaults + environment secrets → WebMCP + Sites → Live / realtime voice infrastructure → webhooks, prompt caching, and context management Some of these could land before DevDay, some during it, and others may simply be infrastructure for what comes next. I’ll break down what each item actually means, where the signals are coming from, and why I think it matters in the comments so this post doesn’t become enormous. But the bigger picture is already pretty clear: OpenAI is building far more than just new models.