OpenAI has announced an update that improves the instant model GPT-5.5 and retires several older models of ChatGPT, including o3 and GPT-4.5. The company shared this information in an updated release notes document.
The update focuses on improving the quality and responsiveness of GPT-5.5, while phasing out older models to optimize computing resources. GPT-5.5 Instant was first released on April 23 and has continued to receive updates until May 2026.
Instant GPT-5.5 improvements and retirements from legacy models
OpenAI indicates that the updated GPT-5.5 will provide more accurate answers and feature an improved writing style. Key changes include shorter, fewer bulleted responses designed to sound more human, along with responses that are more natural and easier to read in everyday conversations.
The update also improves the pacing of practical help tasks. These tweaks are intended to make ChatGPT seem more conversational and less formulaic.
OpenAI is removing two older ChatGPT models to prioritize newer, more capable ones:
- GPT-4.5 will retire on June 27, after a 30-day sunset period
- o3 will be retired on August 26, after a 90-day expiration period
Currently, both models are available only to paid ChatGPT users. OpenAI notes that while o3 has limited ongoing demand, GPT-4.5 has a more dedicated following. GPT-4.5 was closer in behavior to GPT-4o, making it feel more personal to some users and contributing to its appeal.
Users who rely on these models should plan to transition to GPT-5.5 or another available model prior to their respective retirement dates.
New job search integration in ChatGPT and when these changes will be implemented
OpenAI introduces a new job search feature in ChatGPT. This update allows ChatGPT to display live job postings and freelance opportunities.
According to the OpenAI release notes, you can get listings from sources like Indeed, Upwork, Appcast, and various websites on the internet. Results are tailored to the user’s experience, skills and goals, helping to highlight relevant roles. Users can follow links to apply directly to the original sites.
In addition to the job search feature, OpenAI has improved ChatGPT’s capabilities for creating resumes, editing existing ones, and exporting them in professional formats.
The implementation of GPT-5.5 improvements and job search integration is gradually occurring around the world. OpenAI has not announced a specific date for the full global launch.
Model retirements follow set schedules: GPT-4.5 will be phased out of ChatGPT on June 27 and O3 on August 26.
