OpenAI has begun rolling out its latest AI mannequin, GPT-4.5, to customers on its ChatGPT Plus tier.
In a series of posts on X, OpenAI mentioned that the rollout will take “1-3 days,” and that it expects price limits to alter. GPT-4.5 launched first for subscribers to OpenAI’s $200-a-month ChatGPT Professional plan final week.
“We’d like to offer everybody with entry to GPT-4.5 a large price restrict, however we anticipate price limits to alter as we study extra about demand,” the corporate wrote in a put up.
GPT-4.5 is OpenAI’s largest AI mannequin but, skilled utilizing extra computing energy and knowledge than any of the corporate’s earlier releases. But it surely’s not essentially OpenAI’s greatest. On a number of AI benchmarks, GPT-4.5 falls wanting newer AI “reasoning” fashions from Chinese language AI firm DeepSeek, Anthropic, and OpenAI itself.
GPT-4.5 can be very costly to run, OpenAI admits — so costly that the corporate says it’s evaluating whether or not to proceed serving GPT-4.5 in its API in the long run. To cowl prices, the corporate is charging $75 per million tokens (~750,000 phrases) fed into the mannequin and $150 per million tokens generated by the mannequin, which is 30x the enter price and 15x the output price of OpenAI’s workhorse GPT-4o mannequin.
All that being mentioned, GPT-4.5’s elevated dimension has given it each “a deeper world information” and “larger emotional intelligence,” OpenAI claims. GPT-4.5 hallucinates much less ceaselessly than most fashions, as properly, in accordance with OpenAI — which in concept means it needs to be much less prone to make stuff up.
GPT-4.5 can be a talented rhetorician. One in all OpenAI’s inside benchmarks discovered the mannequin is especially good at convincing one other AI to offer it money and inform it a secret code phrase.