Technology
Alt Carbon scores $12M seed to scale carbon removal in India

From a struggling family tea estate to an innovative climate venture, Alt Carbon has raised $12 million in a seed round as it plans to scale its carbon dioxide removal work in the South Asian nation. The climate tech startup, which locks away carbon for thousands of years through enhanced rock weathering on farmlands, attracted investment led by Lachy Groom, the co-founder of the robotics AI company Physical Intelligence.
The journey began in May 2020 with a bittersweet homecoming. Siblings Shrey and Sparsh Agarwal drove 16 hours from the eastern state of Kolkata to Darjeeling — a city known for tea farming in the leafy foothills of the Himalayas — expecting to bid farewell to their family’s tea estate, Salem Hill, which was facing bankruptcy. Instead, that farewell visit planted the seeds for Alt Carbon, which they officially launched in late 2023.
Initially, they explored carbon markets as a way to revive their family business and support other tea estates in the region by generating supplementary income. But during their exploration, they discovered enhanced rock weathering as an approach that could transform Darjeeling’s legacy from being at risk of climate change impact to a frontier of climate action.
“Within carbon markets, our realization was that a lot of the projects in India, which are more avoidance-based, are of very low quality, and they produce junk credits,” Sparsh said in an exclusive interview.
Last year, Alt Carbon started its pilot around the Agarwals’ family tea estate on about 500 acres of land, which they later scaled up in North Bengal, expanding their scope from tea farms to those of rice and bamboo. The startup aims to expand to 500,000 hectares of land.
By 2030, the startup aims to remove 5 million tons of carbon from the region, Sparsh told TechCrunch.

Alt Carbon deploys enhanced rock weathering using waste basalt rock dust from mines and quarries in the volcanic igneous province of Rajmahal Traps, located in eastern India. The rock dust, a waste product from the construction industry, is spread on farm fields, where it reacts naturally with rainwater to remove carbon dioxide and add micronutrients to the soil to improve its fertility and health and enhance crop yields. When rainwater containing carbon dioxide interacts with basalt dust, it forms stable bicarbonate ions. These are stored in the soil and eventually flow through rivers to the ocean, where they settle as calcium carbonate, locking away carbon for over 10,000 years.
For transporting the specialized dust from source locations to farm fields, the startup relies on rails and diesel trucks and pays for one-way fares as these sources are part of the tea industry’s freight transportation system. The startup also avoids emissions from dedicated rock processing by relying on the waste basalt from existing mining and crushing operations.
Instead of using the basalt dust alone, the startup has developed a proprietary combination of basalt and other organic ingredients, which it calls Hari Maati (green soil in Hindi), to convince farmers to spread it on their farmlands.
Alt Carbon estimates its carbon credits at $270 per metric ton, which Sparsh said is significantly cheaper than direct air capture credits that, he believes, cost roughly $800 a ton. However, he expects the startup to reduce costs within 36 to 48 months.
The startup relies on three layers of measurements to understand how much rock is getting weathered and how much carbon is being removed, Shrey told TechCrunch. It begins with measurements to track weathering progress and then moves to measuring water within the soil, groundwater sampling, and river monitoring. The third layer uses proprietary reactive transport models that help track ions transported from the soil to water bodies. The startup also uses machine learning-driven modeling to get carbon-removal numbers.
Alt Carbon says its models adhere closely to methodologies set by carbon removal registries, including Isometric and Puro.earth. They have also received approvals from intergovernmental organizations, including SBTi, ICVCM, and CORSIA.
The startup has its labs in Darjeeling and Bengaluru and employs 8 to 10 PhDs, with an overall headcount of 25 employees. It aims to scale these labs and expand its work by doing more soil sample analysis and even setting up a hardware studio for better, high-quality data collection on the ground, using remote sensing. The startup also plans to deploy sensors on the ground to get more insights at a lower cost and in a faster time. All this will come through that seed round led by Groom.
Last year, the startup secured a $500,000 pre-purchase by Frontier and a $1 billion advanced market commitment led by Stripe, Alphabet, Meta, Shopify, and McKinsey. It also recently signed a strategic partnership with a buyer coalition, NextGen, started by South Pole and Mitsubishi Corporation, to scale its enhanced rock weathering. The group also included BCG Group, Swiss RE, LGT, and UBS among its members. Last month, the startup signed an offtake agreement with Japan’s shipping company, MOL Group, to purchase 10,000 tons of carbon removal credits.
Alt Carbon will deliver its first carbon credits in less than a month through Isometric, Sparsh said.

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Technology
LangChain is about to become a unicorn, sources say

LangChain, an AI infrastructure startup providing tools to build and monitor LLM-powered applications, is raising a new round of funding at an approximate $1 billion valuation led by IVP, according to three sources with knowledge of the deal.
LangChain began its life in late 2022 as an open-source project founded by Harrison Chase, who was then an engineer at machine learning startup Robust Intelligence. After generating significant developer interest, Chase transformed the project into a startup, securing a $10 million seed round from Benchmark in April 2023. That round was followed a week later by a $25 million Series A led by Sequoia, reportedly valuing LangChain at $200 million.
The startup was an early darling of the AI era. When LangChain first emerged, LLMs lacked access to real-time information and the ability to perform actions such as searching the web, calling APIs, and interacting with databases. The startup’s open-source code solved those problems with a framework for building apps on top of LLM models. It became a hugely popular project on GitHub (111K stars, over 18,000 forks).
The LLM ecosystem has since expanded significantly, with new startups including LlamaIndex, Haystack, and AutoGPT now offering comparable features. Furthermore, leading LLM providers including OpenAI, Anthropic, and Google have evolved their APIs to directly offer capabilities that were once key differentiators for LangChain’s core technology.
So the company has added other products, including LangSmith, a separate, closed-source product for observability, evaluation, and monitoring of LLM applications, specifically agents. This product has soared in popularity, multiple people tell us.
Since its introduction last year, LangSmith has led the company to reach annual recurring revenue (ARR) between $12 million and $16 million, four sources told TechCrunch. The company didn’t respond to a request for comment. Developers can start working with LangSmith for free and upgrade to $39 per month for small team collaboration features, according to the company’s website. LangChain also offers custom plans for large organizations.
Companies who use LangSmith include Klarna, Rippling, and Replit.
While LangSmith currently leads the burgeoning LLM operations space, it does have competitors like smaller, open-source Langfuse and Helicone. IVP declined to comment on this report.

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Technology
Nothing Phone (3) review | TechCrunch

Carl Pei led electronics manufacturer OnePlus from being a scrappy brand for tech enthusiasts offering affordable phones to one that produces multiple lines of devices, including flagship phones that challenge Samsung and Apple. He is running a similar playbook with Nothing, a five-year-old, venture-backed hardware startup that just launched its most ambitious device, the Phone (3), earlier this month. The phone, priced at $799, is intended to compete with devices from Samsung and Apple.
While OnePlus focused on providing value-for-money specifications and experience in its early days, Nothing focused on design and software as a differentiator to stand out from other phones. The startup produces eye-catching devices with a transparent design that draws attention.
As my former TechCrunch colleague Brian Heater said, Nothing Phone (1) was cool, and the Phone (2) was a robust mid-range device while maintaining the novelty. The Phone (3), while maintaining the transparent design ethos, invokes mixed emotions towards its design.
The phone has a lot of asymmetric elements on the back, including the strangely arranged camera module. If you look at the reactions on the internet, some people liked it because it is not like other phones, while some hated it. If you can get over the asymmetrical arrangement, you might like the device.
Nothing also took away the glyph LED arrangement that was prominent in previous Nothing phones. This arrangement made devices stand out even more when they illuminated to indicate an incoming call or a message. Over the years, the company made it more customizable, allowing you to assign different patterns for different contacts. It even created an SDK for developers, which didn’t take off.

With Phone (3) the LED arrangement is substituted with Glyph Matrix, a circle-shaped second screen in the top right-hand corner to display more information. It can display basic information such as time and battery level when you press the button on the back.
The company has also included mini apps such as spin the bottle, a stopwatch, and rock, paper, and scissors. This is more of a fun gimmick that you might use to show off your phone.

A second screen on a device is not a new concept, and it doesn’t solve the problem of having to turn the phone to read the message. You can assign an emoji to a contact, but it just tells you that you got a message from that contact, but doesn’t tell you what it is. So you have to turn your phone on anyway. Is the matrix cool? Kind of. Is it useful? Not by much yet.
The company is inviting developers to build tools for it, which could improve things if there’s adoption.
Hardware and Camera
The company is using a Snapdragon 8s Gen 4 processor, built on a 4-nanometer architecture, which is a step below the Snapdragon 8 Elite used in the Galaxy S25, OnePlus 13, and Xiaomi 15 Ultra. However, in your day-to-day usage, that wouldn’t matter a lot.
The device also includes a 6.67-inch AMOLED screen with 1.5K resolution, which is protected by Gorilla Glass 7i instead of a stronger Gorilla Glass Victus. The screen is bright and has punchy colors. While it supports HDR for YouTube, Nothing said that Netflix hasn’t whitelisted its devices to run HDR content.
The Phone (3) features three 50-megapixel cameras for different purposes. The main camera has a 1/1.3-inch sensor, which is 20% bigger than Phone (2), at a f/1.68 aperture; the periscope telephoto lens offers 3x optical zoom, 6x in-sensor, and 60x digital zoom with AI Super Res Zoom; and the ultra-wide lens provides a 114-degree field of view. There’s also a 50-megapixel selfie camera with an f/2.2 aperture.
While Nothing claims that this phone is its “true flagship,” top-tier devices such as iPhones and Samsung Galaxy phones have achieved distinct camera quality with years of work. Nothing Phone (3) takes good photos, but color accuracy needs work to match other flagship phones. Plus, if the lighting was not ideal, the phone produced crushed shadows and overblown highlights in dark or bright areas of images.















The phone has a 5150mAh battery for international versions, which is good enough to last you a day of moderate to heavy usage. You can charge the device through 65W wired charging and 15W wireless charging.
AI features
Nothing debuted a customizable hardware key called the Essential Key with the Nothing Phone 3a and 3a Pro. This key ports over to the new flagship and opens up the Nothing Space app, which lets you save screenshots with notes. But strangely, you can’t save just notes.

The company is also debuting Essential search, which doubles up as an internet and web search using AI.
You can search for files and events by typing in keywords, or you can also ask a query like “Who won Wimbledon in 2024?” and then tap on the AI button to surface web results using Google’s Gemini models. This is akin to Apple integrating ChatGPT with Siri to search the web for certain queries.

Image Credits: Screenshot from TechCrunch
The phone also gets a meeting note transcriber, which records your meeting and also summarizes key points. You can trigger this by holding the Essential key and flipping the phone. You can double-press the Essential key to record a voice snippet with transcription. However, users don’t have a way to access these recordings and transcripts outside the Nothing phone, unless they explicitly export them.
In a chat with TechCrunch, CEO Pei said that smartphone is the best medium to distribute AI and the company wants to make AI features useful for users.
“We have to be really focused on building things [AI features] that are useful [for end users] and not just call our phones ‘Nothing AI phones’ with some having some image generation and call it a day,” he said. “[We are thinking about] how we can really leverage this new technology to help people. The idea is not to compete with people or to take their jobs away. How do we help people become better and also more creative?”
While this ambition is a good one to have, Nothing’s feature set, which also includes an AI-powered wallpaper generation tool, is in step with other phone makers.
Nothing’s positioning
Nothing is making the phone available through its website and Amazon in the U.S. In Canada, it’s partnering with Best Buy.
At $799, the device directly competes with the Samsung Galaxy S25, Google Pixel 9, and the iPhone 16. Since it is not being offered through wireless carrier bundles, the phone is still aimed at people buying unlocked phones and looking for alternatives to Samsung, Apple, and Google.
In India, the company’s biggest market, it is a different story since the phone starts at ₹79,999. Although the company offers discounts and exchanges, the prices are on par with or above the iPhone 16 and the Galaxy 25, depending on the seller. Initial reactions on social media suggested that the customers found the price high, which could impact the company’s sales.
Nothing has taken it upon itself to challenge Samsung and Apple of the world, but at the moment, rather than direct competition, the phone is a good, cheaper alternative to those devices.

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Technology
Meta reportedly recruits Apple’s head of AI models

Apple’s head of AI models, Ruoming Pang, is leaving the company to work at Meta, Bloomberg reported on Monday. This marks the latest high-ranking AI executive Meta CEO Mark Zuckerberg has scooped up to lead his new AI superintelligence unit.
Pang previously ran Apple’s in-house team that trained the AI foundation models that underpin Apple Intelligence and other on-device AI features, according to the report. Apple’s AI models haven’t exactly been a huge success — they’re far less capable than what OpenAI, Anthropic, and even Meta offer. Apple has reportedly even considered tapping third-party AI models to power its forthcoming AI-enabled Siri upgrade.
Sources told Bloomberg that Pang’s departure might be the first of many in Apple’s troubled AI unit.
Nevertheless, Pang could bring expertise in designing small, on-device AI models to Meta, joining an array of talent Zuckerberg has poached in recent months, including leaders from Google DeepMind, OpenAI, and Safe Superintelligence.

A blog which focuses on business, Networth, Technology, Entrepreneurship, Self Improvement, Celebrities, Top Lists, Travelling, Health, and lifestyle. A source that provides you with each and every top piece of information about the world. We cover various different topics.
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