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ChatGPT Web

OpenAI · Web app

ChatGPT Web

September 19, 2026 at 6:52 PM UTC

2026-09-09 entry trimmed: removed the “Deep Research in ChatGPT Work and Codex” section (availability, @Deep Research / steer-as-it-runs framing, Work/Codex allowance note, and learn-more link).

Changelog

Changelog (20260919-125215Z → 20260919-185209Z)

Release notes (help.openai.com)

  • 2026-09-09 entry trimmed: removed the “Deep Research in ChatGPT Work and Codex” section (availability, @Deep Research / steer-as-it-runs framing, Work/Codex allowance note, and learn-more link).

Instruction / skill surface (flags added, not treated as live ship)

Grouped prompt/instruction parameters landed:

  • Writing & style: writingStyleInstructions, writingStyleSetupInstructions
  • Skills / artifacts / browser / web: skillInstructions, artifactInstructions, browserInstructions, websiteInstructions
  • Messaging & briefings: emailMessagingInstructions, dailyBriefingInstructions
  • Onboarding / connections / base: onboardingInstructions, appConnectionInstructions, baseInstructions
  • Other: tax_types

Config

  • +2 hashed Statsig dynamic configs (opaque; no product names)
Older release← Sep 19, 12:52 UTCNewer release→ Sep 20, 10:52 UTC
All ChatGPT Web releases →