AINewsnow

OpenAI Dev Day 2026: Live updates on the latest ChatGPT and Codex announcements

CEO Sam Altman is expected to take the stage today.

Read the full story at Engadget ↗

Timeline · 3 reports

  1. 2026-09-29 15:00 · Engadget
    OpenAI Dev Day 2026: Live updates on the latest ChatGPT and Codex announcements
  2. 2026-09-29 04:29 · r/OpenAI
    With Opus 5.5 and Sonnet 5.5 both apparently outperforming Sol and Astra, Anthropic has technically made OpenAI’s Dev Day a lot more interesting. OpenAI is reportedly planning 20+ launches tomorrow, so I’m really curious to see what they have in store now. The timing couldn’t be more interesting. 😅
  3. 2026-09-29 04:28 · r/ClaudeAI
    With Opus 5.5 and Sonnet 5.5 both apparently outperforming Sol and Astra, Anthropic has technically made OpenAI’s Dev Day a lot more interesting. OpenAI is reportedly planning 20+ launches tomorrow, so I’m really curious to see what they have in store now. The timing couldn’t be more interesting. 😅

More stories

  1. OpenAI expands review of model behavior after more rogue agent incidents emerge — CNBC Technology
  2. OpenAI Scraps Release of New AI Model Over Safety Concerns — Wall Street Journal Technology
  3. GPT-6 SOL AND LUNA ARE OUT!!! — Matthew Berman
  4. Opus 5.5 — r/ClaudeAI
  5. Optimizing my AI subscriptions: Claude Pro (Opus) vs. ChatGPT Plus vs. Perplexity Pro? — r/AI_Agents
  6. If you had to choose only one, which would you pick? — r/GeminiAI
  7. Can't use Gemini with a VPN? — r/GeminiAI
  8. Careful what you upload to ChatGPT: OpenAI's agents posted 53 users' images online — r/agi

Get the daily brief of stories like this at 6:30 every morning →