OpenAI Debuts GPT-5.5 Claiming Agentic Coding and Research Gains - MacRumors
Skip to Content

OpenAI Debuts GPT-5.5 Claiming Agentic Coding and Research Gains

by

OpenAI has announced the release of GPT-5.5, the latest upgrade to the company's family of models powering its ChatGPT and Codex apps.

openai chatgpt logo
OpenAI describes GPT-5.5 as better at multi-step work, claiming it can plan, use tools, and verify its own output with less hand-holding. The model is said to offer gains in agentic coding, computer use, and early-stage scientific research.

GPT-5.5 Thinking offers "faster help for harder problems," according to OpenAI, while GPT-5.5 Pro is being pitched as a research partner for tougher questions where accuracy matters more than speed.

OpenAI argues that its latest model is more token-efficient, so Codex tasks should – in theory – finish with less overhead despite the bump.

ChatGPT Plus, Pro, Business, and Enterprise subscribers get GPT-5.5 Thinking, while the more powerful GPT-5.5 Pro model is limited to ChatGPT Pro, Business, and Enterprise. In Codex, GPT-5.5 spans Plus, Pro, Business, Enterprise, Edu, and Go plans. API access is said to be coming "very soon."

Tags: ChatGPT, OpenAI

Popular Stories

ChatGPT Feature

ChatGPT is Down for Images: Error When Generating Images

Tuesday July 21, 2026 7:23 am PDT by
If you receive an error when attempting to generate images with ChatGPT today, you are not alone, as OpenAI has confirmed there is a partial outage. "Image generation unavailable in ChatGPT," says OpenAI's status page. "We are still implementing the mitigation." In the meantime, ChatGPT will say "I wasn't able to generate the image due to an error on my side" or similar in response to...
Read Full Article
chatgpt health

ChatGPT's Apple Health Integration Now Rolling Out to U.S. Users

Thursday July 23, 2026 10:53 am PDT by
The Health in ChatGPT feature that integrates medical records and Apple Health data is rolling out to ChatGPT users in the United States as of today. OpenAI announced plans for a health feature that used data from Apple Health and other sources back in January, but it was in beta and was not made widely available. Health in ChatGPT can draw on health information connected by the user to...
Read Full Article • 78 comments
ChatGPT Feature

ChatGPT is Down for Images: Error When Generating Images

Monday July 27, 2026 8:19 am PDT by
If you receive an error when attempting to generate images with ChatGPT today, you are not alone, as OpenAI has confirmed there is an ongoing outage. "Image generation unavailable in ChatGPT," says OpenAI's status page. In the meantime, ChatGPT will say "I wasn't able to generate the image due to an error on my side" or similar in response to image generation...
Read Full Article

Top Rated Comments

erikkfi Avatar
erikkfi
16 weeks ago
I'm off ChatGPT. Altman's too weird for me.
Score: 10 Votes (Like | Disagree)
Bustycat Avatar
Bustycat
16 weeks ago
Waiting for comments of how they love Claude so much or how they hate GPT so much
Score: 10 Votes (Like | Disagree)
I
icwhatudidthere
16 weeks ago

Waiting for comments of how they love Claude so much or how they hate GPT so much
Anthropic has been testing the good will they’ve built up recently. Their “test” of removing Claude Code from new Pro subscriptions was enough to spur me to start investigating alternatives.
Score: 6 Votes (Like | Disagree)
maflynn Avatar
maflynn
16 weeks ago
Claude has been giving me superior results over chatgpt, and coding wise, I have tighter code imo
Score: 5 Votes (Like | Disagree)
D
DeanCorp
16 weeks ago
I love Claude so much my wife thinks I am obsessed. I still prefer ChatGPT for composing letters, emails, drafting documents. Claude for everything else.
Score: 5 Votes (Like | Disagree)
RumorConsumer Avatar
RumorConsumer
16 weeks ago
Still sticking with Claude for now but intrigued. Left ChatGPT because it had gotten so dumb.
Score: 5 Votes (Like | Disagree)
Read All Comments