Meet Your New Commuting Companion: The Lightweight Fiido Air Carbon Fiber EbikeIt picks up quickly at lights, and acceleration—especially in Sport mode—is reassuringly quick when it’s time to overtake. I’m delighted by how effortless the overall performance is, and how smoothly the torque kicks in. What’s more, moving it, wheeling it through the house, lifting it onto bike racks, and even just doing basic things like locking it up, is just easier in every way. The motor is quiet, too. While not totally silent, it’s not a distraction.
Impressively, too, the Air can also be ridden reasonably easily without electric assist. A 30-pound single speed bike won’t set any track records, but if power does fail you—or more likely, you misjudge the battery level and forget to charge overnight like I did—it won’t be too much of a workout to get home.
But please don’t confuse this commuter-style electric bike with a powerful mid-drive motor electric bike. With a meagre motor and only one gear (and quite a low one at that) it does not love hills. Steady inclines are easy, but there’s one short, sharp-ish hill close to my office that requires me to stand up and pedal hard to get to the top. I wasn’t as gassed as I would be without any motor assistance, but I definitely wasn’t flying effortlessly up hills.
I’ve also become a convert to the brilliance of belt-drive bikes. They need less maintenance, last longer, and prevent greasy black marks on pant legs. Fiido uses a Gates belt drive here, one of the best systems available, and ideal for urban riding.
Competition and Verdict
WIRED’s current favorite commuter ebike, the Aventon Soltera 3 (8/10), weighs 37 pounds and costs around $500 less than the Air. It’s a superb blend of push bike feel and lightweight electric power and with more power on offer, a faster top speed, and cheaper price, it remains the one to beat. But there’s no denying the appeal of the Fiido Air. It’s a beautiful bike to ride, with stylish looks, nimble acceleration, and push bike practicalities. At 30 pounds, it is impressively light, and easy to live with.
Lightweight electric bikes are starting to appear but competition remains slim. Ribble’s new aluminum Allgrit E AL Sportfit Apex weighs 30.4 pounds and has a hugely practical 12 speed SRAM Apex XPLR AXS gearing. It does cost twice as much, though. Carbon options are limited to a couple of folding designs for now, including the $2,420, 35-pound ADO Air Carbon, and $1,599 Urtopia Carbon Fold Step Thru that weighs just 31 pounds.
So the Fiido Air ticks a lot of boxes, and if you’re looking for a cool pedal-assist electric bike for short, flat urban rides, I highly recommend it. But if there are hills in your life, and you want to keep both hands on the handlebars at all times, the Fiido Air might not be the bike for you.
#Meet #Commuting #Companion #Lightweight #Fiido #Air #Carbon #Fiber #Ebikereviews,review,cycling,outdoors,bicycles
It picks up quickly at lights, and acceleration—especially in Sport mode—is reassuringly quick when it’s time to overtake. I’m delighted by how effortless the overall performance is, and how smoothly the torque kicks in. What’s more, moving it, wheeling it through the house, lifting it onto bike racks, and even just doing basic things like locking it up, is just easier in every way. The motor is quiet, too. While not totally silent, it’s not a distraction.
Impressively, too, the Air can also be ridden reasonably easily without electric assist. A 30-pound single speed bike won’t set any track records, but if power does fail you—or more likely, you misjudge the battery level and forget to charge overnight like I did—it won’t be too much of a workout to get home.
But please don’t confuse this commuter-style electric bike with a powerful mid-drive motor electric bike. With a meagre motor and only one gear (and quite a low one at that) it does not love hills. Steady inclines are easy, but there’s one short, sharp-ish hill close to my office that requires me to stand up and pedal hard to get to the top. I wasn’t as gassed as I would be without any motor assistance, but I definitely wasn’t flying effortlessly up hills.
I’ve also become a convert to the brilliance of belt-drive bikes. They need less maintenance, last longer, and prevent greasy black marks on pant legs. Fiido uses a Gates belt drive here, one of the best systems available, and ideal for urban riding.
Competition and Verdict
WIRED’s current favorite commuter ebike, the Aventon Soltera 3 (8/10), weighs 37 pounds and costs around $500 less than the Air. It’s a superb blend of push bike feel and lightweight electric power and with more power on offer, a faster top speed, and cheaper price, it remains the one to beat. But there’s no denying the appeal of the Fiido Air. It’s a beautiful bike to ride, with stylish looks, nimble acceleration, and push bike practicalities. At 30 pounds, it is impressively light, and easy to live with.
Lightweight electric bikes are starting to appear but competition remains slim. Ribble’s new aluminum Allgrit E AL Sportfit Apex weighs 30.4 pounds and has a hugely practical 12 speed SRAM Apex XPLR AXS gearing. It does cost twice as much, though. Carbon options are limited to a couple of folding designs for now, including the $2,420, 35-pound ADO Air Carbon, and $1,599 Urtopia Carbon Fold Step Thru that weighs just 31 pounds.
So the Fiido Air ticks a lot of boxes, and if you’re looking for a cool pedal-assist electric bike for short, flat urban rides, I highly recommend it. But if there are hills in your life, and you want to keep both hands on the handlebars at all times, the Fiido Air might not be the bike for you.
![xAI fired an engineer who raised alarms about Grok safety, new lawsuit claims | TechCrunch
A former engineer at Elon Musk’s xAI has filed suit against the company and its parent SpaceX claiming he was fired for raising concerns about AI safety.
Devin Kim, who left xAI in September 2025, filed the suit in a California state court on Tuesday. The complaint comes days before SpaceX is set to join the public markets in what’s shaping up to be the largest IPO in history.
According to the lawsuit, which TechCrunch has viewed, Kim became a prominent voice for AI safety while working on Grok, xAI’s AI chatbot. He allegedly complained repeatedly about xAI’s failure to prioritize safety in Grok’s development, a product that has since come under fire for a range of safety and behavioral issues. In particular, Kim was concerned with the possibility that Grok could foment discrimination and help spread information about weapons of mass destruction.
“Grok, of course, proved Mr. Kim right by engaging in spectacular displays of online hatred and vitriol, with the model likening itself to Hitler (‘MechaHitler’),” the lawsuit reads. “Following the Hitler debacle, Mr. Kim worked to re-evaluate Grok’s political bias and discriminatory tendencies.”
September was my last month at xAI! I joined as one of the first members of the post-training team in 2024 and eventually led research tooling, where we built some of the world’s best systems to accelerate Grok’s development.On my first day, I was at the whiteboard with @ibab…— Devin Kim (@devindkim) October 3, 2025
A few months after Kim departed xAI, Grok made headlines again when the chatbot was used to flood X — Musk’s social media platform that also falls under the xAI umbrella — with nonconsensual sexual imagery.
The lawsuit also positions Kim as a whistleblower who was concerned about xAI’s alleged disregard for AI safety as “unlawful” in areas such as internet regulation, consumer protection and unfair business practices, and arms and explosives regulation, among others.
xAI and SpaceX did not immediately respond to requests for comment.
Kim’s focus on AI safety predates his time at xAI. While working at Scale AI, Kim worked on early safety AI initiatives, like leading a project that produced training data for AI to train systems to detect harmful content and comply with governance policies. Last week, the nonprofit Center for AI Safety, which focuses on AI risks, named Kim as its president.
Interestingly, the lawsuit doesn’t implicate Musk himself as a reason for a lack of safety. Rather, Kim’s lawyers describe Musk as having directed xAI to follow the law and implement appropriate safety and testing processes. Instead the claim targets Kim’s supervisor, xAI co-founder Jimmy Ba — who left the company earlier this year — saying that Ba ignored Musk’s directives and retaliated against Kim for pushing for safeguards, in an effort to “silence his repeated complaints about AI safety and biases.”
The lawsuit portrays Ba as someone who vehemently opposed AI safety measures, allegedly telling Kim at one point “AI will kill us all anyway,” and who was instead driven by a mission to make xAI the first to reach superintelligence.
“In one instance in or around August 2025, Mr. Ba attempted to thwart EU safety regulations during the release of Grok Code 1, misrepresenting aspects of the model in order to avoid legally required testing,” the complaint says. “Mr. Ba indicated that he would rather release an unsafe model than a poor-performing one. Mr. Musk ultimately had to intervene.”
According to the lawsuit, Kim intended to give a presentation of his findings the week of September 15, 2025, but Ba called him into a meeting and told him they should “go [their] separate ways” without providing a satisfactory reason.
TechCrunch has reached out to Ba for comment.
Kim is seeking compensatory and punitive damages, as well as a declaratory judgment that xAI and SpaceX’s conduct was unlawful.
When you purchase through links in our articles, we may earn a small commission. This doesn’t affect our editorial independence.#xAI #fired #engineer #raised #alarms #Grok #safety #lawsuit #claims #TechCrunchai safety,devin kim,Grok,SpaceX,xAI](https://i3.wp.com/techcrunch.com/wp-content/uploads/2026/03/grok-getty.jpg?resize=1200%2C800&ssl=1 "xAI fired an engineer who raised alarms about Grok safety, new lawsuit claims | TechCrunch
A former engineer at Elon Musk’s xAI has filed suit against the company and its parent SpaceX claiming he was fired for raising concerns about AI safety.
Devin Kim, who left xAI in September 2025, filed the suit in a California state court on Tuesday. The complaint comes days before SpaceX is set to join the public markets in what’s shaping up to be the largest IPO in history.
According to the lawsuit, which TechCrunch has viewed, Kim became a prominent voice for AI safety while working on Grok, xAI’s AI chatbot. He allegedly complained repeatedly about xAI’s failure to prioritize safety in Grok’s development, a product that has since come under fire for a range of safety and behavioral issues. In particular, Kim was concerned with the possibility that Grok could foment discrimination and help spread information about weapons of mass destruction.
“Grok, of course, proved Mr. Kim right by engaging in spectacular displays of online hatred and vitriol, with the model likening itself to Hitler (‘MechaHitler’),” the lawsuit reads. “Following the Hitler debacle, Mr. Kim worked to re-evaluate Grok’s political bias and discriminatory tendencies.”
September was my last month at xAI! I joined as one of the first members of the post-training team in 2024 and eventually led research tooling, where we built some of the world’s best systems to accelerate Grok’s development.On my first day, I was at the whiteboard with @ibab…— Devin Kim (@devindkim) October 3, 2025
A few months after Kim departed xAI, Grok made headlines again when the chatbot was used to flood X — Musk’s social media platform that also falls under the xAI umbrella — with nonconsensual sexual imagery.
The lawsuit also positions Kim as a whistleblower who was concerned about xAI’s alleged disregard for AI safety as “unlawful” in areas such as internet regulation, consumer protection and unfair business practices, and arms and explosives regulation, among others.
xAI and SpaceX did not immediately respond to requests for comment.
Kim’s focus on AI safety predates his time at xAI. While working at Scale AI, Kim worked on early safety AI initiatives, like leading a project that produced training data for AI to train systems to detect harmful content and comply with governance policies. Last week, the nonprofit Center for AI Safety, which focuses on AI risks, named Kim as its president.
Interestingly, the lawsuit doesn’t implicate Musk himself as a reason for a lack of safety. Rather, Kim’s lawyers describe Musk as having directed xAI to follow the law and implement appropriate safety and testing processes. Instead the claim targets Kim’s supervisor, xAI co-founder Jimmy Ba — who left the company earlier this year — saying that Ba ignored Musk’s directives and retaliated against Kim for pushing for safeguards, in an effort to “silence his repeated complaints about AI safety and biases.”
The lawsuit portrays Ba as someone who vehemently opposed AI safety measures, allegedly telling Kim at one point “AI will kill us all anyway,” and who was instead driven by a mission to make xAI the first to reach superintelligence.
“In one instance in or around August 2025, Mr. Ba attempted to thwart EU safety regulations during the release of Grok Code 1, misrepresenting aspects of the model in order to avoid legally required testing,” the complaint says. “Mr. Ba indicated that he would rather release an unsafe model than a poor-performing one. Mr. Musk ultimately had to intervene.”
According to the lawsuit, Kim intended to give a presentation of his findings the week of September 15, 2025, but Ba called him into a meeting and told him they should “go [their] separate ways” without providing a satisfactory reason.
TechCrunch has reached out to Ba for comment.
Kim is seeking compensatory and punitive damages, as well as a declaratory judgment that xAI and SpaceX’s conduct was unlawful.
When you purchase through links in our articles, we may earn a small commission. This doesn’t affect our editorial independence.#xAI #fired #engineer #raised #alarms #Grok #safety #lawsuit #claims #TechCrunchai safety,devin kim,Grok,SpaceX,xAI")
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