Enlarge (credit: Andriy Onufriyenko via Getty Images)

OpenAI truly does not want you to know what its latest AI model is "thinking." Since the company launched its "Strawberry" AI model family last week, touting so-called reasoning abilities with o1-preview and o1-mini, OpenAI has been sending out warning emails and threats of bans to any user who tries to probe how the model works.

Unlike previous AI models from OpenAI, such as GPT-4o, the company trained o1 specifically to work through a step-by-step problem-solving process before generating an answer. When users ask an "o1" model a question in ChatGPT, users have the option of seeing this chain-of-thought process written out in the ChatGPT interface. However, by design, OpenAI hides the raw chain of thought from users, instead presenting a filtered interpretation created by a second AI model.

Nothing is more enticing to enthusiasts than information obscured, so the race has been on among hackers and red-teamers to try to uncover o1's raw chain of thought using jailbreaking or prompt injection techniques that attempt to trick the model into spilling its secrets. There have been early reports of some successes, but nothing has yet been strongly confirmed.

Enlarge / It's a somewhat pricey plug-in hybrid, but it's also quite competent. (credit: Jonathan Gitlin)

Arguably, some of Lexus' greatest innovations have been in its product strategy as much as any technology to emerge from its R&D labs. When it launched in 1989, it was with the idea that a car could combine Japanese reliability with the luxury and power expected from a big German sedan. A few years later the RX basically invented the crossover category with SUV-like looks but with fewer of the handling compromises.

I'll be frank—I haven't always jelled with those crossovers. During the last couple of years we tested both the RX 500h F Sport, which I didn't find that sporty or particularly efficient, and the battery-electric RZ 450e, which left me very cold. Third time is evidently the charm, because I got on much better with the topic of today's review, the RX 450h+ Luxury, to give it its full name.

This is Lexus' plug-in hybrid version—the 500h carries a much smaller battery that only recharges as the car drives. In fact, it's the same plug-in hybrid powertrain as that found in the smaller, cheaper NX crossover, combining a 2.5 L four-cylinder gasoline engine and a pair of electric motors fed by an 18.1 kWh lithium-ion battery pack. Total power output is 304 hp (227 kW), but Lexus has declined to publish a combined torque figure or any outputs for the electric motors.

Enlarge (credit: Vlatko Gasparic via Getty Images)

OpenAI finally unveiled its rumored "Strawberry" AI language model on Thursday, claiming significant improvements in what it calls "reasoning" and problem-solving capabilities over previous large language models (LLMs). Formally named "OpenAI o1," the model family will initially launch in two forms, o1-preview and o1-mini, available today for ChatGPT Plus and certain API users.

OpenAI claims that o1-preview outperforms its predecessor, GPT-4o, on multiple benchmarks, including competitive programming, mathematics, and "scientific reasoning." However, people who have used the model say it does not yet outclass GPT-4o in every metric. Other users have criticized the delay in receiving a response from the model, owing to the multi-step processing occurring behind the scenes before answering a query.

In a rare display of public hype-busting, OpenAI product manager Joanne Jang tweeted, "There's a lot of o1 hype on my feed, so I'm worried that it might be setting the wrong expectations. what o1 is: the first reasoning model that shines in really hard tasks, and it'll only get better. (I'm personally psyched about the model's potential & trajectory!) what o1 isn't (yet!): a miracle model that does everything better than previous models. you might be disappointed if this is your expectation for today's launch—but we're working to get there!"

Enlarge / The latest Volkswagen Golf GTI isn't perfect, but it has enough charm to overcome its flaws. (credit: Jonathan Gitlin)

"They won't make them like this much longer" is a pretty hackneyed aphorism, but it certainly applies to the Volkswagen Golf GTI. The Mk 8 Golf is due for a mid-life refresh next year, and when that happens, VW will be simplifying things by dropping the manual transmission option. That means model year 2024 is the final chance anyone will have to buy a GTI with three pedals. Yes, it has some flaws, but it's also small and nimble, both attributes lacking in so much of what the automotive industry has to offer these days.

We've been a bit deficient in not reviewing the Mk 8 Golf GTI until now. I reviewed the more expensive, more powerful Golf R in 2022, but the last GTI we drove was the outgoing Mk 7 car in mid-2020. That time, we were only able to source a GTI with the two-pedal, dual-clutch gearbox, a transmission I felt didn't quite suit the engine it was mated to. On the other hand, I was effusive about the old GTI's infotainment, calling it "one of the best systems on the market." Well, it was 2020, remember.

Under the hood, you'll find yet another version of VW Group's venerable EA888 four-cylinder engine, here with a turbocharger and direct injection. It generates 241 hp (180 kW) and 273 lb-ft (370 Nm), with that peak torque arriving at just 1,750 rpm. This sends its power to the front wheels via a seven-speed DSG or the soon-to-be-retired six-speed manual.