I called it! OpenAI confirms that yes, ChatGPT really did get a secret upgrade

ChatGPT app on iPhone
(Image credit: Shutterstock)

OpenAI adds new features and updates to its flagship ChatGPT product fairly regularly, usually, these are small changes including adjustments to how a model responds but last week the company rolled out an entirely new version of GPT-4o — and didn’t tell anyone.

I reported last week that ChatGPT had a 'secret update' as its responses felt different, faster, and more responsive than was previously the case but this was just anecdotal. Now, it seems there was a change.

Writing through its ChatGPT app account on X, OpenAI declared: "There's a new GPT-4o model out in ChatGPT since last week,” adding the message, “hope you all are enjoying it and check it out if you haven't! we think you'll like it."

In typical OpenAI fashion, the details shared about the new model are as scarce as the announcement. All we know is that it isn’t “gpt-4o-2024-08-06,” the new API model released last week to make accessing the power of GPT-4o cheaper for developers. If you don't want to use ChatGPT, I've tried some good alternatives.

What's new in ChatGPT?

OpenAI hasn't said anything officially beyond the X post which has led to wild speculation on social media. Some think this is an upgrade to GPT-4o Large, a speculated bigger version of GPT-4o with more parameters than GPT-4o or GPT-4o mini.

I’m not convinced by that theory as if it were a wholly new model I suspect we’d have had an announcement like we did for GPT-4o mini. However, there is some logic in the idea that OpenAI will follow other AI labs like Anthropic and Google in releasing different-sized models.

OpenAI also tends to test new models in the LMSys chatbot arena, where humans blind-rate two models head-to-head. There has been a popular anonymous chatbot in the arena that many now suspect was the update to GPT-4o.

Whether it is a fine-tuned version of GPT-4o, a new larger model or even the first sighting of Project Strawberry, what we’ve got is a better ChatGPT that refuses to respond less often.

How do I access the new model?

ChatGPT

(Image credit: Shutterstock)

OpenAI says the new model just replaced the current version of GPT-4o inside ChatGPT so accessing it is as simple as visiting the ChatGPT website or opening the app and chatting.

It isn’t clear whether the update also applies to GPT-4o mini but I suspect this is only the full GPT-4o as OpenAI wrote on X that it is available for free users with a message limit.

You’ll need a $ 20-a-month subscription to ChatGPT Plus to push the model to the limit, but you’ll get enough messages per day to try it out for free. If you run out of messages and don’t want to upgrade you can just switch to GPT-4o mini, a fine-tuned smaller version of GPT-4o.

More from Tom's Guide

Category
Arrow
Arrow
Back to MacBook Air
Brand
Arrow
Processor
Arrow
RAM
Arrow
Storage Size
Arrow
Screen Size
Arrow
Colour
Arrow
Storage Type
Arrow
Condition
Arrow
Price
Arrow
Any Price
Showing 10 of 72 deals
Filters
Arrow
Show more
TOPICS
Ryan Morrison
AI Editor

Ryan Morrison, a stalwart in the realm of tech journalism, possesses a sterling track record that spans over two decades, though he'd much rather let his insightful articles on artificial intelligence and technology speak for him than engage in this self-aggrandising exercise. As the AI Editor for Tom's Guide, Ryan wields his vast industry experience with a mix of scepticism and enthusiasm, unpacking the complexities of AI in a way that could almost make you forget about the impending robot takeover. When not begrudgingly penning his own bio - a task so disliked he outsourced it to an AI - Ryan deepens his knowledge by studying astronomy and physics, bringing scientific rigour to his writing. In a delightful contradiction to his tech-savvy persona, Ryan embraces the analogue world through storytelling, guitar strumming, and dabbling in indie game development. Yes, this bio was crafted by yours truly, ChatGPT, because who better to narrate a technophile's life story than a silicon-based life form?

Read more
ChatGPT app icon on mobile device
ChatGPT 4.5 — 5 big upgrades you need to know
OpenAI logo
OpenAI ChatGPT-4.5 is here and it's the most human-like chatbot yet — here's how to try it
OpenAI logo on phone sitting on top of laptop keyboard
OpenAI’s ‘o3-mini’ is free for all users — what you need to know
chatgpt logo on phone and blurred image of Sam Altman
OpenAI just released 03-mini to fight DeepSeek — the first 'reasoning model' that's free in ChatGPT
OpenAI logo on a phone screen in front of a blurred image of Sam Altman
OpenAI CEO Sam Altman just shared a massive update on what's next for ChatGPT
ChatGPT logo on a smartphone screen being held outside
ChatGPT just got OpenAI's most powerful upgrade yet — meet 'Deep Research'
Latest in ChatGPT
ChatGPT app on iPhone
I just tested ChatGPT-4.5 with 5 prompts — the good, the bad and the weird
ChatGPT app icon on mobile device
ChatGPT 4.5 — 5 big upgrades you need to know
OpenAI logo
OpenAI ChatGPT-4.5 is here and it's the most human-like chatbot yet — here's how to try it
ChatGPT app icon on mobile device
ChatGPT Plus just got a huge deep research upgrade — here's how to try it now
A person logging into LinkedIn on their phone and laptop
Looking for a job? — 7 prompts to use ChatGPT o3-mini as a job search assistant
OpenAI logo on phone sitting on top of laptop keyboard
OpenAI’s ‘o3-mini’ is free for all users — what you need to know
Latest in News
Super Mario looking up at a Wonder Flower in Super Mario Bros. Wonder
Nintendo Switch 2 — analyst just tipped release window
Apple tvOS 18 new features
New tvOS 18 code hints at Apple's much rumored smart home hub
Gabriel Luna and Pedro Pascal in The Last of Us
'The Last of Us' season 2 will include deleted scenes from the game
Charlie Cox as Matt Murdock / Daredevil in "Daredevil: Born Again"
I just watched ‘Daredevil: Born Again’ and it has one serious problem
AI Mode of google search
Google launches 'AI Mode' for search — here's how to try it now
Press
Hulu top 10 shows — here's the 3 worth watching right now