GPT-5.5 Instant was released on April 23, and OpenAI says it made "significant progress" through May 2026.
Improvements to GPT-5.5 Instant: accuracy, style, and pacing
OpenAI quietly updated GPT-5.5 Instant this week, saying the model's quality has improved so it will "respond more accurately and use a better style for its answers." The company is explicitly reducing long, bullet-heavy responses so GPT outputs "sound more human," making them easier to read and more natural in everyday conversation. OpenAI also says GPT-5.5 "will be better paced in practical help tasks after this week's update." The changes follow the model's April 23 release and what the company described as notable progress in May 2026.
Legacy models on the chopping block: dates and sunset periods
OpenAI is retiring multiple legacy models to free up compute and focus on newer models. The company set two firm dates: GPT-4.5 "will be retired from ChatGPT on June 27 following a 30-day sunset period," and o3 "will be retired from ChatGPT" on August 26, with users "given a 90-day sunset period" before that retirement takes effect. The company currently offers these models in ChatGPT to paid users only.
Why GPT-4.5 matters — and why some users will notice its loss
The publisher of the update noted that not many users are expected to miss o3, but "quite a lot of users are going to miss GPT-4.5." The source material explains why: "GPT 4.5 was closer to GPT-4o, which is why it felt more personal and was also controversial for that reason." That characterization is the clearest statement in the release about user sentiment and the trade-offs OpenAI faces when retiring an intermediate-generation model that some users preferred for tone or personality.
ChatGPT adds job search: live listings and resume tools
Alongside model upgrades and retirements, OpenAI is integrating a job search tool into ChatGPT. In its release notes OpenAI wrote: "When you search for jobs, ChatGPT can surface live listings and freelance opportunities from sources like Indeed, Upwork, Appcast, and across the web." The company added: "Results are personalized using your experience, skills, and goals to highlight roles that may be a strong fit. You can follow links to apply directly on the source sites."
OpenAI also said it has improved ChatGPT's ability to create resumes, edit existing resumes, and export them in a professional format. These job-search and resume features are being rolled out gradually around the world.
What this means for paid users, job seekers, and legacy-model users
- Paid ChatGPT users: The models affected by the retirements are offered "to paid users only," so paid subscribers will need to plan for the removals on June 27 (GPT-4.5) and August 26 (o3) or migrate to the improved GPT-5.5 Instant and other newer offerings.
- Job seekers: ChatGPT's job-search integration can surface live listings from Indeed, Upwork, Appcast, and the broader web, and it will personalize results "using your experience, skills, and goals" while offering the ability to follow links to apply on source sites. The product also aims to make resume creation, editing, and export more professional.
- Users of legacy models: Those who preferred o3 may not be greatly affected, according to OpenAI's notes, but users who prefer GPT-4.5 — described as feeling "more personal" and linked to GPT-4o — are specifically flagged as likely to notice and miss its removal.
OpenAI frames the changes as a consolidation to "better serve its newer and most capable models" and to free compute capacity. The company has provided explicit dates for two retirements and described functional upgrades to GPT-5.5 Instant and ChatGPT's job-search and resume features; the remaining open question is whether the planned sunset windows — 30 days for GPT-4.5 and 90 days for o3 — will give affected paid users the time they need to transition workflows and preferences to newer models and tools.
