OpenAI's always-on agent "o" seemingly leaked by its own staff
OpenAI appears to have accidentally leaked the product name of its first always-on agent: a lowercase "o". Between Sept 26–28, multiple independent sources found references to "o" in ChatGPT web code, internal configs, and some users' upgrade pages; OpenAI engineer Thibault Sottiaux's remarks on X suggested an employee slip. The community considers the clues credible, with the product expected to debut at DevDay on Sept 29. Blogger VraserX predicts it will be OpenAI's biggest launch of the year: an always-on, fully autonomous agent that taps user context via memory and plugins and keeps working, rather than a chatbot opened on demand.
Confirmed
- The product name "o" (lowercase) genuinely appears in ChatGPT internal configs and web code, independently reported by @testingcatalog, @markk, @CodexResets1 and others; per 新智元, developers dug out explicit comments like "Lowercase o is the assistant's product name" from ChatGPT core code, treated as a "code smoking gun."
- "o" appears as a display name in internal config with an "-o" email suffix, suggesting the assistant will support email handling with its own mailbox identity.
- Per Thibault Sottiaux's X remarks, the codename was seemingly leaked accidentally by OpenAI staff; the community largely believes the clue is real and has been joking about it.
- On Sept 28, observer kimmonismus noted Tibo (Tibo Louis-Lucas) had hinted at the internal "o" project for two days, calling it significant for OpenAI and predicting an imminent Astra update.
Unconfirmed
- Reddit user @1411337 claims the always-on assistant is built on a Google Astra variant called "Aeon," optimized for long-running tasks; @CodexResets1 likewise says DevDay will reveal a long-running Agent codenamed "Aeon," similar to Grok Bot or Manus, working for hours, days, or weeks, possibly built on Astra. Both are unverified single-source claims; the relationship between "o" and "Aeon" remains unclear.
- @ExpertAnnual19 says "o" will be open to all Pro tiers and include Fast Mode — unconfirmed officially.
- Timing: @markk says Tuesday's DevDay; @testingcatalog reports a possible Sept 29 DevDay reveal in Sam Altman's opening keynote; @CodexResets1 says Thursday. @xiaohu and 新智元 echo the DevDay expectation; specifics remain rumor-level.
- Positioning: multiple posts describe it as a Grok-like always-on bot (Muse also mentioned), 24/7 online and cloud-dependent; @VraserX further predicts a fully autonomous agent accessing user context via memory and plugins, calling it OpenAI's biggest release of the year — all blogger speculation, not official.
- @Dullydude dug up a Sept 20, 2024 report that OpenAI might rebrand to a single letter "O," speculating a link to the new agent's name — pure conjecture.
Why it matters
- If true, this would be OpenAI's first consumer-facing always-on agent, a shift from conversational assistant to a continuously online agent that proactively handles tasks like email, directly rivaling xAI's resident Grok bot.
- The codename leaked by its own staff, appearing repeatedly in product code with explicit comments, suggests the product is in late-stage configuration ahead of launch — Sept 29 DevDay is worth close attention.
2026-09-26 ~ 2026-09-28 · 13 related posts
- Episode 1: Rumors swirl ahead of OpenAI DevDay: always-on agents and new models(2026-09-25, 4 posts)
- Episode 2: OpenAI's always-on agent "o" seemingly leaked by its own staff(2026-09-26, 13 posts)
- Episode 3: OpenAI DevDay Enters Final Countdown, Livestream Confirmed(2026-09-27, 8 posts)
- Episode 4: Investor Predicts OpenAI Dev Day: 50% Price Cut and Bigger Models(2026-09-27, 2 posts)
- Episode 5: OpenAI DevDay agenda leaks across multiple channels, Codex platform plays take center stage(2026-09-28, 7 posts)
- Episode 6: OpenAI DevDay 2026 Kicks Off With 20+ Launches and a Mystery Reveal(2026-09-28, 44 posts)
- Episode 7: Leaked OpenAI DevDay Rundown Lists 20+ Launches: Always-on Agents, Codex Cloud(2026-09-28, 8 posts)
- Episode 8: Ahead of OpenAI DevDay, Wrapper Startups Brace for "D-Day"(2026-09-28, 7 posts)
- Episode 9: Report: OpenAI to Launch Agent Product Dots to Rival Grok and Meta(2026-09-29, 3 posts)
- Episode 10: OpenAI DevDay: Codex Goes All-In on Cloud as Live Demos Falter(2026-09-30, 41 posts)
- Episode 11: OpenAI Breaks Down Its New Agent Stack After DevDay(2026-09-30, 3 posts)
- Episode 12: OpenAI Executive Publicly Credits Open-Source Project pidot at DevDay(2026-09-30, 2 posts)
- Episode 13: OpenAI Launches Always-On Agent dots at DevDay 2026(2026-10-01, 7 posts)
- Episode 14: OpenAI Unveils Persistent Agent Dots at DevDay, Glitches and All(2026-10-01, 7 posts)
Primary sources
- Rumor: OpenAI to unveil long-running agent codenamed "Aeon" at DevDay — CodexResets1 · 2026-09-26
- OpenAI's rumored always-on assistant is named "o" and may handle email ahead of DevDay — gaganghotra_ · 2026-09-26
- Reddit Leak Claims OpenAI's Always-On Assistant "O" Runs on "Aeon," an Astra Variant — 141_1337 · 2026-09-26
- [source] Leak: OpenAI to Announce Always-On Agent "o" at DevDay, Possibly With Its Own Email — testingcatalog · 2026-09-26
- Leak: OpenAI's always-on cloud assistant is named "o", due at DevDay — mark_k · 2026-09-26
- [source] OpenAI's new always-on agent reportedly codenamed "o", leaked by its own engineer — koltregaskes · 2026-09-26
- Leak: OpenAI's always-on agent will be called 'o', coming to all Pro tiers — Expert_Annual_19 · 2026-09-26
- Rumor: OpenAI to launch 'o' personal assistant around Dev Day next week — xiaohu · 2026-09-26
- OpenAI's rumored persistent agent "o" may tie to old "rebranding to O" report — Dullydude · 2026-09-26
- [source] OpenAI's always-on agent 'o' surfaces in ChatGPT code, rumored DevDay reveal Sept 29 — 新智元 · 2026-09-27
- OpenAI "o" Update Spotted in ChatGPT Code: Always-On Agent for All Pro Tiers — alexandr_wang · 2026-09-27
- OpenAI insider hints at mysterious "o" project; Astra successor predicted soon — kimmonismus · 2026-09-28
- OpenAI's biggest release this year reportedly 'o' — an always-on autonomous agent — VraserX · 2026-09-28