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OpenAI Debuts GPT-5.5 Claiming Agentic Coding and Research Gains

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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.jpg

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."

Article Link: OpenAI Debuts GPT-5.5 Claiming Agentic Coding and Research Gains
 
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https://www.macrumors.com/2026/04/24/openai-gpt-5-5-research-gains/
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I’m digging into some AI development and I’ve learned to not trust LLMs too terribly much, no matter how good the people who own the LLM says it is. Always remember that these companies, especially Anthropic and OpenAI, desperately need investment money to survive into the future and it’s in their interest to announce how much better they get every couple of months. IMO, you are better off following some of the older players in the market, such as Google and Microsoft, even if their products aren’t seemingly as good. They seem to be taking a more conservative approach to LLMs and aren’t making wild claims about what LLMs can do.
 
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Orange Bat said:
I’m digging into some AI development and I’ve learned to not trust LLMs too terribly much, no matter how good the people who own the LLM says it is. Always remember that these companies, especially Anthropic and OpenAI, desperately need investment money to survive into the future and it’s in their interest to announce how much better they get every couple of months. IMO, you are better off following some of the older players in the market, such as Google and Microsoft, even if their products aren’t seemingly as good. They seem to be taking a more conservative approach to LLMs and aren’t making wild claims about what LLMs can do.
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That’s well thought out. These companies are propping up the economy right now, and can’t afford to lose this race. But I am not interested at all in any of Microsoft’s offerings.
 
We have to acknowledge that AI is maturing step by step but as one YouTuber said "Every time I breath in some LLM is getting released!" 😃
 
Orange Bat said:
I’m digging into some AI development and I’ve learned to not trust LLMs too terribly much, no matter how good the people who own the LLM says it is. Always remember that these companies, especially Anthropic and OpenAI, desperately need investment money to survive into the future and it’s in their interest to announce how much better they get every couple of months. IMO, you are better off following some of the older players in the market, such as Google and Microsoft, even if their products aren’t seemingly as good. They seem to be taking a more conservative approach to LLMs and aren’t making wild claims about what LLMs can do.
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It's crazy how credulous so much reporting is on this sort of thing. They just restate the company line most times.
 
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ChatGPT is great. I think I use every LLM but only for pretty basic stuff and image gen (ChatGPT just took the imaging crown by a mile wow it's amazing). The only one I don't use is Claude because not a big coder. The marginal differences just don't matter much. Where ChatGPT is now every AI will be in 6-18 months (even lagging Grok).
 
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jimbobb24 said:
ChatGPT is great. I think I use every LLM but only for pretty basic stuff and image gen (ChatGPT just took the imaging crown by a mile wow it's amazing). The only one I don't use is Claude because not a big coder. The marginal differences just don't matter much. Where ChatGPT is now every AI will be in 6-18 months (even lagging Grok).
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I was purely ChatGPT. My suggestion is spend the weekend migrating memories and chats over to Claude. Log out of ChatGPT for an entire week and use nothing but Claude and you will see such a dramatic difference in your workflow. I still use ChatGPT but far far less than I once did.
 
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I have a subscription to both ChatGPT and Claude. There have been several times recently where I started something on ChatGPT and got less than desirable results. Then I did the same thing on Claude and got great results pretty quickly.

My problem with Claude, however, is how quickly I run up against session limits often. It seems like I ask one or two questions and I'm at 90%. It's an AI that does great work but I'm almost afraid to use it sometimes because I know I'm going to run out session time quickly. I've never run into limits on GPT, at least not on the paid tier.
 
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HeinoM said:
I have a subscription to both ChatGPT and Claude. There have been several times recently where I started something on ChatGPT and got less than desirable results. Then I did the same thing on Claude and got great results pretty quickly.

My problem with Claude, however, is how quickly I run up against session limits often. It seems like I ask one or two questions and I'm at 90%. It's an AI that does great work but I'm almost afraid to use it sometimes because I know I'm going to run out session time quickly. I've never run into limits on GPT, at least not on the paid tier.
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I had that issue, and simply moved up the plan. Now on Max plan I get to utilise Claude full time as part of my workflow and haven’t seen one session limit since.
 
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For $20/mo use Codex 5.3 in Xcode... now if you want a complicated session done in one-shot, use 5.4; but you'll hit cap. 5.3 you won't. But Claude? $20? not a chance you'll get AI rug-pull in 2 prompts!
 
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