OpenAI aims GPT-5 at Anthropic's coding crown

Catch-up quick: GPT-5 is OpenAI's first model to combine a traditional large language model with reasoning capabilities that allow AI engines to achieve better results by using more computing time to address a task.

• The company also promised GPT-5 will hallucinate less and be better at health-related tasks, among other improvements.
• GPT-5 will be less sycophantic than its predecessors, according to OpenAI.
• Pietro Schirano, CEO of AI startup MagicPath, called GPT-5 the best coding model out there and a great collaborator. "This is electricity arriving in every home," he posted on X, "a before and after moment for how we build."

Yes, but: The new model arrived months later than originally expected and critics say it doesn't bring the world much closer to the kind of AI that can solve the climate crisis or cure cancer.

• "It will not harness the incredible power of artificial intelligence as a tool to solve humanity's most pressing challenges," Future of Life Institute president Max Tegmark said in a statement. "Instead, it will pour fuel on the fires set by its predecessors: destroying jobs, upending economies, and turbocharging scams and deepfakes."

The other side: For casual users of ChatGPT, the upgrade is likely to feel significant.

• "The people discussing this release on Twitter will be disappointed in a first reaction, but 99% of people using ChatGPT are going to be so happy about the upgrade," Nathan Lambert wrote in his Substack newsletter.
• The potential new crop of users could create a fresh wave of experimentation and novel use cases, which is what happened when OpenAI increased access to ChatGPT's image generation capabilities.

Between the lines: OpenAI spent much of an hourlong livestream on Thursday highlighting GPT-5's coding abilities, showing demos, touting a range of benchmarks and providing comments from a range of early testers, including Cursor, Vercel and Windsurf.

• "Our team has found GPT-5 to be remarkably intelligent, easy to steer, and even to have a personality we haven't seen in any other model," Cursor CEO Michael Truell said in a statement. "It not only catches tricky, deeply-hidden bugs but can also run long, multi-turn background agents to see complex tasks through to the finish."
• CEO Sam Altman told reporters that GPT-5 allows for on-the-fly custom software. "This idea of software on demand will be a defining part of the new GPT-5 era," he said.

By the numbers: Coding prowess is driving massive revenue growth at Anthropic.

• Anthropic is generating revenue at a nearly $5 billion-per-year pace, according to The Information. That's up from a $4 billion-per-year pace earlier this month, and reflects its status as the go-to choice for programmers and coding apps.
• OpenAI, meanwhile, is currently at a $12 billion per year revenue run rate, a figure that reflects the company's broader business and larger size.

Zoom out: While OpenAI heavily emphasized GPT-5's coding capabilities, the new model is replacing a host of older models, including those that power the free and paid versions of ChatGPT.

• Users will also be able to customize GPT-5's personality as part of a feature in research preview. The four initial options are "Cynic," "Robot," "Listener" and "Nerd."
• Altman insisted that once you use GPT-5 it is hard to go back to an earlier model, likening it to reverting to a lower-resolution display after you've grown used to an iPhone's Retina display.

What we're watching: GPT-5 isn't AGI, but improved coding could woo more developers, while fresh personalization options and reduced hallucinations could attract more everyday users to the free version of ChatGPT.