[AINews] OpenAI DevDay 2026: Dots, 6.1 Sol, Ultrafast, Decisions API, Agents API, Spaces, Marketplace, and 1.2 Billion ChatGPT WAU

Today is the 20 year anniversary of Sam Altman’s first startup, and fittingly OpenAI the consumer AI company is so back (as is OpenAI the AI Cloud and OpenAI the Enterprise and Coding Definitely Not Anthropic Hyperscaler), with Dots — their voice-enabled answer to Instinct and Muse, ChatGPT Spaces — with Dots their answer to Notion and the office productivity suite, GPT 6.1 Sol (no Astra! alas) — their answer to Opus 5.5 with a new ultrafast mode running on unspecified silicon, alongside a wealth of platform updates, including the Decisions API, their rapid answer to what we covered in the Jev podcast, though as you will recall the point is System One over Decision Models. For now it’s a light shim over Luna, so it gets vision, without calibration/RLCD. AI News for 9/28/2026-9/29/2026. We checked 12 subreddits, 544 Twitters and no further Discords. AINews’ website lets you search all past issues. As a reminder, AINews is now a section of Latent Space. You can opt in/out of email frequencies! AI News for 9/28/2026-9/29/2026. We checked 12 subreddits, 544 Twitters and no further Discords. AINews’ website lets you search all past issues. As a reminder, AINews is now a section…