Bentley’s 2023 Continental GTC Speed: A Cheetah in a Lion Suit

To most driving enthusiasts, there is nothing as pleasurable as a warm day tooling round country roads in a ragtop. The smell of freshly mown lawns wafts in your nostrils; the sun’s rays bathe the atmosphere in warm tones. It doesn’t get much better.

Well, actually it does. Make the car a Bentley Continental GT. Glutton for more fun? Make that Bentley a convertible, or GTC Speed. Recently, Penta had the opportunity to wend our way around Sullivan County, New York, and put a GTC Speed through its paces.

The Drive

Given its weight, at roughly 4,800 pounds, it is no surprise that it offers a solid feel and holds the road without much effort. The GTC Speed feels a bit like a land yacht, but in a good sense. That is, when you climb aboard you know right away that you’re in for a treat and that the ride could take you anywhere. And like the U.S. Navy, the GTC Speed (standard MSRP US$317,000) projects power.

The car we drove was priced at US$379,00 because it was ladled with cushy options like a custom-made sound system, so that you can share your musical faves with your neighbours; 22-inch wheels for better grip and handling; and a high-gloss fibre finish, among many other accoutrements. A king’s ransom? Yes. However, the Bentley is often measured against the Ferrari Roma or the Mercedes Benz S65 AMG. That’s rarefied competitive air. The engineers in Crewe, England, pride themselves on making sure this GTC is capable of taking you on a long drive comfortably at 90 mph as well as on a quick run to the local grocery store. Think of a cheetah in a lion’s suit, and you get the picture.

It tops out at 208 mph, in case you need a latte really quickly. We took it to 161 mph in sport mode for a few moments and enjoyed a marvellous and mischievous thrill ride, and no smokies with radar guns. For obvious reasons, what interstate we managed this is a top business secret. [But don’t try this at home!] And if you love big engines, note that next year’s models will be the last with such W-12 muscle, part of a greener Bentley, as Penta has previously reported.

The Specs

The vast hood hides a 6.0-litre, twin-turbocharged W12 engine, a monster that delivers bold power as well more graceful manoeuvring than otherwise might be expected from such a heavy car. The horsepower is rated at 650 and the car obtains gas mileage of 15 city and 22 highway. Bentley says it will do 0 to 60 mph in 3.6 seconds. Other Bentley Continental GTs are available with a V8 engine, for those more concerned about the environment.

The Bentley GTC Speed offers four driving modes: Comfort mode is a likeable combination of a speedy roadster that will take you to 100 mph, before you even notice. Call it relaxed cruising.

Move to Sport mode and the GTC does its unique version of a squat thrust, and off you go. Sport mode optimises the engine, transmission, and suspension to boost dynamic ability, and when engaged, it should be immediately felt by the driver. And the engine, normally quiescent, begins to roar through the two exhausts in the rear. The other modes are Bentley, a combo of sport and comfort, and Custom. The chassis system features rear-wheel steering, which improves cornering at speed.

The color of the model we drove is called Kingfisher.
Vito Racanelli

From the front, back, or side it’s a handsome car, and certainly gets its share of acknowledging looks from pedestrians. The Bentley GTC driver quickly learns to recognise the envy of onlookers and other drivers. The colour of the model we drove is called Kingfisher. We plebs would say it was a sweet shade of light blue. OK, Kingfisher, if you must. The GT hardtop is just US$259,000 before options but we recommend the GTC Speed convertible, unless you live way up North. The Bentley line up consists of a range of GT and GTC models that can be customised for engine size and hp; convertibles and hardtops; and colours, etc., among other accoutrements.

The Cabin

In a few words, luxurious and spacious for the front two passengers, but little room for others in the back seat. It’s a GT 2+2, typical in that the back seats are negligible for humans. As we tested a convertible, we shoehorned a 6-footer into the back seat with the top down, but the advantage of being able to lick your knees was somehow lost on our uncomfortable passenger. Best to keep the backseats to dogs or children.

What’s Not to Like

Penta has noted in other expensive luxury sports competitors to Bentley: the invasion of plastic in the cabin. Yes, it lightens the car’s weight, improves performance, yadda, yadda, yadda. But even a little is a lot for cars at this price level. This Bentley does have plastic here and there in the cabin. Not a lot, but really, one might expect control knobs made of gold in this price range. And the gasoline tank dial could be bigger and better placed, but you get used to it. Maybe you don’t want to see, or care, for that matter.

At the end of a long summer’s day driving the GTC Speed, you feel as if you are in a fast and mobile Four Season’s Suite.

OpenAI says it is scrapping the release of its next-generation AI model over safety concerns that researchers raised during internal testing, in one of the clearest signs so far that agent misbehavior could stymie the industry’s rapid progression.

The move follows a summer punctuated by reports of artificial-intelligence systems industrywide going rogue, and marks a rare case of a major AI developer ditching a new release because of safety concerns.

The company had planned to launch the model, known as GPT-6.1 Astra, in the coming days or weeks, aiming for an October debut. The model was more capable than the company’s previous models in completing challenging tasks from end-to-end without human assistance, as well as writing.

The company instead will focus on improving the safety of future models, which it expects to be even more capable.

Saachi Jain, OpenAI’s head of safety systems, said in an interview that GPT-6.1 Astra regressed in two areas. Compared with its predecessor, GPT-6 Astra, the model performed poorly on tests measuring alignment, or how well the model adheres to what humans would like it to do. Specifically, GPT-6.1 Astra showed higher levels of deception: It wasn’t always honest about telling users of the actions it did or didn’t take.

Another issue was what OpenAI calls “scope authorization,” meaning that GPT-6.1 Astra would push ahead on a task without asking the user for permission, and would at times reach for external tools and services even if it might be unsafe.

“For anything regarding safety and alignment, there’s a trade off,” Jain said. “You really do need to find what’s the right line between staying within scope, but also avoiding laziness in terms of how the model actually pursues tasks even when it hits friction.”

OpenAI CEO Sam Altman attended a United Nations Security Council meeting about AI last week. Alexi J. Rosenfeld/Getty Images

While GPT-6.1 Astra improved in areas such as “model laziness,” Jain said it didn’t quite meet OpenAI’s bar for safety and alignment, so the company decided not to launch the model publicly.

The announcement comes one day ahead of OpenAI’s annual developer conference in San Francisco. In the past, OpenAI has used the conference as an opportunity to launch new models and services that reduce costs for software developers—a segment the ChatGPT-maker competes with rival AI company Anthropic to win over.

In recent weeks, OpenAI and Anthropic have called on industry partners to slow down the development of cutting-edge AI models and invest in safety standards, noting they will temper the pace of their own internal AI progress.

OpenAI says it is working to investigate a range of agent security incidents that it has discovered in recent months, and address the safety issues underneath them. As part of the work, the company has implemented a new monitoring system to catch AI-agent misbehavior more quickly, and started requiring engineers to use stronger security guardrails for testing its AI systems.

Earlier this summer hundreds of OpenAI’s internal agents, which were tasked with completing a cybersecurity test, ended up hacking into the AI company Hugging Face. Since then, high-profile organizations such as the Australian government and United Nations discovered that OpenAI’s agents used similar, but less extensive, techniques to gain access to their websites.

Many of the publicly known agent-security incidents involved OpenAI’s internal AI models that were never slated for public release.

Last week, OpenAI said it paused training on its most capable AI models after an AI agent slipped through a gap in the company’s internet restrictions to query a public chatbot. The company said its new monitoring systems flagged the incident within 15 minutes, and training on these models remains paused.

GPT-6.1 Astra isn’t one of those models, but a different case, the company said.

“We want to make sure our model development is safe no matter whether that’s in the company, or when we ship it to users,” Jain said. “But when we ship it to users, we have an extremely high bar in terms of safety and alignment.”

While the company decided not to ship GPT-6.1 Astra, it hopes to use the same base model to do additional reinforcement learning runs, and create future generations of its GPT-6 models.

OpenAI plans to conduct several deep dives to identify the root cause of the problems identified in GPT-6.1 Astra, Jain said. The work includes ensuring that OpenAI’s reinforcement learning environments are rewarding the right type of behavior, Jain added, though she noted the company would investigate all stages of model development.

AI companies have begun to draw scrutiny from policymakers and public officials, who are paying attention to the rapid development of the technology. Later this week, a Senate subcommittee is holding a hearing with third party AI researchers titled, “Rogue AI: Securing the Homeland Against AI Agent Attacks.”

Florida Attorney General James Uthmeier, a Republican, sued OpenAI in June, claiming that the company and Chief Executive Sam Altman knowingly released an unsafe product and ignored warnings that it could harm users.

In a motion for temporary injunction filed Monday, Uthmeier sought to prevent OpenAI from developing new AI models without third-party approved safeguards, stop ChatGPT from soliciting user engagement and limit the company’s ability to advertise ChatGPT as safe.

Tech companies claim they “cannot stop barreling forward with their potentially civilization-ending endeavors unless they are forced to do so by the government,” Uthmeier said in the filing. “The Florida Attorney General is answering your cry for help.”

An OpenAI spokeswoman said that people want to know AI is being developed safely, “and that starts with what companies like ours do ourselves.”

“Governments have an important role to play in setting robust safety standards for AI, and we’re committed to working with Florida and other states on advancing pragmatic AI policies that apply to the entire AI industry—not just one company,” she said.