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JB Straubel’s Redwood Materials raises $1 billion in funding round

(Credit: Redwood Materials)

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Redwood Materials, a battery recycling startup founded and led by Tesla co-founder, former CTO, and current Board Member JB Straubel, has announced the completion of its most recent equity funding round. The funding round raised over $1 billion in Series D shares, and it was co-led by Goldman Sachs Asset Management, Capricorn’s Technology Impact Fund, and funds advised by T. Rowe Price Associates.

As noted by the battery recycling startup, the Series D funding will be used to continue building the company’s capacity. This should expand the domestic battery supply chain and allow Redwood’s customers, such as Panasonic from Tesla’s Giga Nevada facility, to purchase sustainable battery materials that are made in the United States. 

Redwood noted that it remains dedicated to the expansion of its collection of end-of-life batteries, which should increase the company’s capability to refine and recover higher quantities of key components. “With this additional capital, we’ll continue to assemble an industry-leading technical team, ensuring top-notch execution in sustainable battery materials production,” Redwood noted in a press release.  

As of writing, Redwood has raised almost $2 billion in equity capital, together with a $2 billion loan commitment from the US Department of Energy. 

Goldman Sachs Asset Management issued a statement about the battery recycling company’s recent funding round. As per Sebastien Gagnon, a Managing Director in Private Equity within Goldman Sachs Asset Management, Redwood has the potential to be a prominent player in the battery materials segment. 

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“As the electrification megatrend continues to accelerate, building a local sustainable battery materials supply chain is more important now than ever. We believe the Redwood team is well-positioned to become a leader in the battery materials industry. We look forward to working with the company in the coming years and leveraging our firm’s global platform to support Redwood’s growth, which we believe will play an important role in the ongoing energy transition,” he said. 

Dipender Saluja, Managing Partner, Capricorn’s Technology Impact Fund, also shared some thoughts about the funding round and the battery recycling startup. 

“Having invested in electric cars and airplanes, battery technology, and power electronics for over two decades, we’ve had a front-row seat to the evolution of clean energy technology and electric mobility. Redwood Materials emerges as one of the most pivotal companies in this space. Our journey with JB, beginning with his transformative work at Tesla, feels like it’s come full circle with our investment in Redwood. Their commitment to creating a sustainable battery materials supply chain is not only an impressive continuation of that legacy but also a crucial step for our clean energy future,” Saluja said. 

Don’t hesitate to contact us with news tips. Just send a message to simon@teslarati.com to give us a heads-up. 

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Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

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Elon Musk

Grok coming to Tesla vehicles next week “at the latest:” Elon Musk

Grok’s rollout to Tesla vehicles is expected to begin next week at the latest.

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Credit: Tesla China

Elon Musk announced on Thursday that Grok, the large language model developed by his startup xAI, will soon be available in Tesla vehicles. Grok’s rollout to Tesla vehicles is expected to begin next week at the latest, further deepening the ties between the two Elon Musk-led companies.

Tesla–xAI synergy

Musk confirmed the news on X shortly after livestreaming the release of Grok 4, xAI’s latest large language model. “Grok is coming to Tesla vehicles very soon. Next week at the latest,” Musk wrote in a post on social media platform X.

During the livestream, Musk and several members of the xAI team highlighted several upgrades to Grok 4’s voice capabilities and performance metrics, positioning the LLM as competitive with top-tier models from OpenAI and Google.

The in-vehicle integration of Grok marks a new chapter in Tesla’s AI development. While Tesla has long relied on in-house systems for autonomous driving and energy optimization, Grok’s integration would introduce conversational AI directly into its vehicles’ user experience. This integration could potentially improve customer interaction inside Tesla vehicles.

xAI and Tesla’s collaborative footprint

Grok’s upcoming rollout to Tesla vehicles adds to a growing business relationship between Tesla and xAI. Earlier this year, Tesla disclosed that it generated $198.3 million in revenue from commercial, consulting, and support agreements with xAI, as noted in a report from Bloomberg News. A large portion of that amount, however, came from the sale of Megapack energy storage systems to the artificial intelligence startup.

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In July 2023, Musk polled X users about whether Tesla should invest $5 billion in xAI. While no formal investment has been made so far, 68% of poll participants voted yes, and Musk has since stated that the idea would be discussed with Tesla’s board.

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Tesla Robotaxi to expand Austin coverage, Bay Area launch targeted in coming months

Tesla is looking at the San Francisco Bay Area as the next location for its Robotaxi service.

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Credit: @AdanGuajardo/X

Tesla is preparing to expand its Robotaxi pilot program in Austin, Texas, with the self-driving service set to cover a larger portion of the city this weekend. The CEO shared the update in a post on social media platform X, where he also noted that the company is currently looking at the San Francisco Bay Area as the location for Tesla’s next Robotaxi pilot.

Tesla’s growing Robotaxi pilot

Tesla’s Robotaxi service first launched in Austin last month as a test program. While the vehicles operate without a human in the driver’s seat, a Tesla employee currently rides in the front passenger seat to monitor vehicle performance. Responses to Tesla’s Robotaxi pilot are quite positive, with some users praising the vehicles for their smooth and comfortable rides.

In a later post on X, Musk also stated that Tesla is in the process of seeking regulatory approval to begin operating robotaxis in the Bay Area, adding that a launch there could happen within “a month or two.” The California expansion would be a notable milestone for Tesla, considering its roots in the state.

Robotaxi is key to Tesla’s long-term growth

Autonomous driving remains central to Tesla’s long-term vision. Musk has consistently framed Robotaxis as a future driver of profitability and growth, particularly as EV sales face headwinds across multiple regions. In a way, the expansion of Tesla’s autonomous fleet is expected to play a critical role in differentiating the company’s offerings in a crowded electric vehicle market.

Tesla has yet to specify when the Robotaxi service will transition out of its testing phase or how it plans to monetize the platform, as the company is only charging a flat fee of $4.20 per ride in its Austin pilot program today. However, its growing geographic footprint suggests the company is steadily progressing toward wider deployment.

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xAI launches Grok 4 with new $300/month SuperGrok Heavy subscription

xAI also introduced SuperGrok Heavy, which is priced at $300 per month.

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Credit: xAI/X

xAI, the artificial intelligence company founded by Elon Musk, has officially launched its latest flagship models, Grok 4 and Grok 4 Heavy. Alongside the release, the company introduced its most premium subscription tier to date, SuperGrok Heavy, which is priced at $300 per month and targeted at power users and developers.

Grok 4 is designed to compete with top-tier AI models like OpenAI’s ChatGPT and Google’s Gemini. As per xAI, Grok 4 demonstrates frontier-level performance across several benchmark evaluations. 

On Humanity’s Last Exam, an extensive test designed to evaluate general knowledge, Grok 4 scored 25.4% without using external tools, outperforming OpenAI’s o3 (high), which scored 21%, and Gemini 2.5 Pro, which scored 21.6%. 

When equipped with tools, Grok 4 Heavy scored 44.4%, making it the top-performing model in that category. For context, Gemini 2.5 Pro with tools scored 26.9%, as noted in a TechCrunch report.

xAI also highlighted Grok 4 Heavy’s “multi-agent” system, which enables multiple instances of the model to solve a problem in parallel and compare answers, similar to a study group. This collaborative approach is intended to improve both reasoning and accuracy in complex tasks.

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The company also shared results from the ARC-AGI-2 benchmark, where Grok (Thinking) achieved new state of the art (SOTA) score on the test with 15.9%. As per Arc Prize in a post on X, this score is “nearly double(s) the previous commercial SOTA and tops the current Kaggle competition SOTA.”

The $300/month SuperGrok Heavy plan grants users early access to Grok 4 Heavy, as well as upcoming product features. Upcoming capabilities that are planned for release in the coming months include an AI coding model in August, a multi-modal agent in September, and a video generation system in October.

Grok 4 and Grok 4 Heavy are available via API as part of xAI’s push to engage developers and enterprise users. The company’s enterprise platform, which launched just two months ago, will also expand via partnerships with cloud hyperscalers to bring Grok models to broader infrastructure environments.

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