Skip to content
  • Tech Dev NotesTech Dev Notes
Apps
  • Lookup
  • Compare
Market movement
  • Charts
  • Rankings
Visual proof
  • Screens
  • Store listings
  • Icons
Stacks and releases
  • Tech stacks
  • Tool releases
  • Developers
More
  • X feature flags
  • Grokipedia
  • Grok companions
  • Blog
  • Follow on X
ChartsRankingsMoversCompareLookupScreensTech stacksReleases

© 2026 Tech Dev Notes

RSSAboutAPIStatusSecurityPrivacyTermsSitemap@techdevnotes
ChatGPT Web

OpenAI · Web app

ChatGPT Web

September 15, 2026 at 4:52 PM UTC

No official release notes in this window.

Changelog

Changelog — chatgpt.com (20260915-153652Z → 20260915-165208Z)

No official release notes in this window.

Instruction / agent prompt flags

Added readable flags for scoped instruction packs:

  • baseInstructions, artifactInstructions, skillInstructions
  • browserInstructions, websiteInstructions, appConnectionInstructions
  • dailyBriefingInstructions, emailMessagingInstructions, onboardingInstructions
  • writingStyleInstructions, writingStyleSetupInstructions

Other

  • tax_types flag added
  • +2 hashed Statsig dynamic configs

No gates/layers removed or revalued; nothing marked live via flag removal.

Older release← Sep 15, 15:36 UTCNewer release→ Sep 15, 22:52 UTC
All ChatGPT Web releases →