A core service with broad coverage across research, generation, and execution support, making workflow-wide updates easier to track.
What became possible
SummaryOpenAI added GPT-5.4 Thinking to ChatGPT with more explicit planning and stronger support for deeper research-style work.
CapabilityUsers can work through complex investigations while seeing more of the structure behind the model's research path.
ImpactThis is more practical for review-heavy work where intermediate reasoning direction matters before final output.
SummaryOpenAI added Windows availability for the Codex app for ChatGPT Plus users, giving desktop users a faster way into coding work.
CapabilityUsers can jump into a code-focused workflow from Windows without relying on a browser-only path.
ImpactThat shortens the path from idea to implementation checks in desktop-heavy development setups.
SummaryOpenAI updated GPT-5.3 Instant in ChatGPT with stronger web-grounded answers and better control over response tone.
CapabilityUsers can get faster up-to-date answers while still shaping tone for drafts, internal notes, or customer-facing copy.
ImpactThis makes one-thread research and drafting more practical when teams need both speed and current information.
Update distribution
Current direction
For ChatGPT, recent updates are centered on Search and Research (2), Text Generation (1), Agent and Automation (1). Latest update date: 2026-03-05.
Dates with updates for this service
Comparison entry points