OpenAI DevDay 2026: Dots, GPT-6.1 Sol, and Sign in with ChatGPT

The author of the channel “Quest Theory of Cast and Roles” broke down 14 announcements from OpenAI DevDay 2026 (September 29, San Francisco) on October 1, 2026: persistent agents Dots, the mid-tier model GPT-6.1 Sol, which is 5 times cheaper than Astra, the Ultrafast tier up to 300 tokens/second, and Sign in with ChatGPT.

Compiled by Sergey KostenchukPublished 2026-10-01Updated 2026-10-02

2026-10-01 Business OpenAI

💼 OpenAI DevDay 2026: Dots, GPT-6.1 Sol, and Sign in with ChatGPT

On October 1, the channel “Quest Theory of Cast and Roles” broke down 14 announcements from OpenAI DevDay (held on September 29 in San Francisco). Dots — always-on agents on GPT-6 Astra with a cloud computer; Sol — a mid-tier model 5 times cheaper than Astra ($2/$10 per 1M); Ultrafast offers up to 300 tokens/second, but only on Pro 500 at $500 per month.

🌍 Sign in with ChatGPT turns a subscription into a consumable limit: third-party apps like Devin, Notion, and Vercel can spend it without an API key. This is a new model for distributing AI compute.

👤 On Pro and Business Premium, you can create a dot — an agent for goals with configurable permissions, with the first dot included in the plan. Sol is rational for long agent sessions, but “almost Astra” is currently confirmed by only one aggregator.

Source 1: https://dev.to/axrisi/openai-devday-2026-every-announcement-with-prices-and-availability-1mbh

Source 2: https://emergent.sh/news/openai-devday-2026

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