Musk’s xAI makes Grok 4 free worldwide for a limited time

Elon Musk’s company xAI has made its latest AI model, Grok 4, available to all users worldwide at no cost for a limited period. The model, launched just a month ago, was initially exclusive to paying subscribers of SuperGrok and X Premium.

Although Grok 4 is now open to everyone, its most potent version, Grok 4 Heavy, remains restricted to SuperGrok Heavy members. The announcement comes days after OpenAI unveiled GPT-5, which is also freely accessible.

Grok 4 features two operating modes. Auto mode decides automatically whether a query requires more detailed reasoning, aiming to deliver faster responses and use fewer resources. Expert mode allows users to manually switch the AI into reasoning mode if they want a more thorough reply.

Alongside the release, xAI has introduced Grok Imagine, a free AI video generation tool for users in the US, with enhanced usage limits for paid members in other regions. The tool has already sparked controversy after reports emerged of its use to create explicit videos of celebrities.

Musk has also revealed plans to integrate advertising into the Grok chatbot interface as an additional revenue source to help offset the high costs of running the AI on powerful GPUs.

The ads will be placed between responses and suggestions on both the web platform and the mobile application, marking another step in xAI’s bid to expand its user base while sustaining the service financially.

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Stablecoins unlocking crypto adoption and AI economies

Stablecoins have rapidly risen as one of the most promising breakthroughs in the cryptocurrency world. They are neither traditional currency nor the first thing that comes to mind when thinking about crypto; instead, they represent a unique blend of both worlds, combining the stability of fiat with the innovation of digital assets.

In a market often known for wild price swings, stablecoins offer fresh air, enabling practical use of cryptocurrencies for real-world payments and commerce. The real question is, are stablecoins destined to bring crypto into everyday use and unlock their full potential for the masses?

Stablecoins might be the missing piece that unlocks crypto’s full promise and reshapes the future of digital finance.

Stablecoin regulation: How global rules drive adoption

Regulators worldwide are stepping up to define clear rules for stablecoins, signalling growing market maturity and increasing confidence from major financial institutions. Recent legislative efforts across multiple jurisdictions aim to establish firm standards such as full reserves, audits, and licensing requirements, encouraging banks and asset managers to engage more confidently with stablecoins. 

These coordinated global moves go beyond simple policy updates; they are laying the foundation for stablecoins to evolve from niche crypto assets to trusted pillars of the future financial ecosystem. Regulators and industry leaders are thus bringing cryptocurrencies closer to everyday users and embedding them into daily financial life. 

Stablecoins might be the missing piece that unlocks crypto’s full promise and reshapes the future of digital finance.

Corporations and banks embracing stablecoins: A paradigm shift

The adoption of stablecoins by big corporations and banks marks a significant turning point, and, in some ways, a paradox. Once seen as an enemy of decentralised finance, these institutions now seem to be conceding and joining the movement they once resisted – what you fail to control – can ultimately win. 

Retail giants such as Walmart and Amazon are reportedly exploring their stablecoin initiatives to streamline payments and foster deeper customer engagement. On the banking side, institutions like Bank of America, JPMorgan Chase, and Citigroup are developing or assessing stablecoins to integrate crypto-friendly services into their offerings.

Western Union is also experimenting with stablecoin solutions to reduce remittance costs and increase transaction speed, particularly in emerging markets with volatile currencies. 

They all realise that staying competitive means adapting to the latest shifts in global finance. Such corporate interest signals that stablecoins are transitioning from speculative assets to functional money-like assets capable of handling everyday transactions across orders and demographics. 

There is also a sociological dimension to stablecoins’ corporate and institutional embrace. Established institutions bring an inherent trust that can alleviate the scepticism surrounding cryptocurrencies.

By linking stablecoins to familiar brands and regulated banks, these digital tokens can overcome cultural and psychological barriers that have limited crypto adoption, ultimately embedding digital currencies into the fabric of global commerce.

Stablecoins might be the missing piece that unlocks crypto’s full promise and reshapes the future of digital finance.

Stablecoins and the rise of AI-driven economies

Stablecoins are increasingly becoming the financial backbone of AI-powered economic systems. As AI agents gain autonomy to transact, negotiate, and execute tasks on behalf of individuals and businesses, they require a reliable, programmable, and instantly liquid currency.

Stablecoins perfectly fulfil this role, offering near-instant settlement, low transaction costs, and transparent, trustless operations on blockchain networks. 

In the emerging ‘self-driving economy’, stablecoins may be the preferred currency for a future where machines transact independently. Integrating programmable money with AI may redefine the architecture of commerce and governance. Such a powerful synergy is laying the groundwork for economic systems that operate around the clock without human intervention. 

As AI technology continues to advance rapidly, the demand for stablecoins as the ideal ‘AI money’ will likely accelerate, further driving crypto adoption across industries. 

Stablecoins might be the missing piece that unlocks crypto’s full promise and reshapes the future of digital finance.

The bridge between crypto and fiat economies

From a financial philosophy standpoint, stablecoins represent an attempt to synthesise the advantages of decentralisation with the stability and trust associated with fiat money. They aim to combine the freedom and programmability of blockchain with the reassurance of stable value, thereby lowering entry barriers for a wider audience.

On a global scale, stablecoins have the potential to revolutionise cross-border payments, especially benefiting countries with unstable currencies and limited access to traditional banking. 

Sociologically, stablecoins could redefine the way societies perceive money and trust. Moving away from centralised authorities controlling currency issuance, these tokens leverage transparent blockchain ledgers that anyone can verify. The shift challenges traditional power structures and calls for new forms of economic participation based on openness and accessibility.

Yet challenges remain: stablecoins must navigate regulatory scrutiny, develop secure infrastructure, and educate users worldwide. The future will depend on balancing innovation, safety, and societal acceptance – it seems like we are still in the early stages.

Perhaps stablecoins are not just another financial innovation, but a mirror reflecting our shifting relationship with money, trust, and control. If the value we exchange no longer comes from paper, metal, or even banks, but from code, AI, and consensus, then perhaps the real question is whether their rise marks the beginning of a new financial reality – or something we have yet to fully understand.

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Russia to phase out Mastercard and Visa

The Bank of Russia is preparing to phase out Mastercard and Visa cards and to switch to the domestic Mir payment system. Authorities plan a gradual timeline for banks to replace international cards, letting consumers switch at their own pace while keeping access to current accounts.

Visa and Mastercard have operated only domestically since leaving the Russian market after the 2022 invasion of Ukraine. The share of these cards in circulation is declining as more Russians adopt Mir.

The Central Bank has extended its validity temporarily, but a clear deadline for complete replacement is now being discussed.

Russia plans to launch the digital rouble alongside the card transition in September 2026. Only a limited framework for digital coins in foreign trade is expected to remain, highlighting Russia’s broader push for financial sovereignty.

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Crypto crime unit expands with Binance

Tron, Tether, and TRM Labs have announced the expansion of their T3 Financial Crime Unit (T3 FCU) with Binance as the first T3+ partner. The unit has frozen over $250 million in illicit crypto assets since its launch in September 2024.

The T3 FCU works with global law enforcement to tackle money laundering, investment fraud, terrorism financing, and other financial crimes. The new T3+ programme unites exchanges and institutions to share intelligence and tackle threats in real time.

Recent reports highlight the urgency of these efforts. Over $3 billion in crypto was stolen in the first half of 2025, with some hacks laundering funds in under three minutes. Only around 4% of stolen assets were recovered during this period, underscoring the speed and sophistication of modern attacks.

Debate continues over the role of stablecoin issuers and exchanges in freezing funds. Tether’s halt of $86,000 in stolen USDt highlights fast recovery but raises concerns over decentralised principles amid calls for stronger industry-wide security.

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Nvidia holds record share of S&P 500

Nvidia now accounts for more than 8% of the S&P 500, the largest share ever held by a single stock since records began in 1981. The company’s market value reached about $4.5 trillion on Monday, driven by unprecedented demand for its AI chips.

Its share price surged 239% in 2023, 171% in 2024, and 36% in 2025.

While investor sentiment remains strong, analysts warn of mounting risks. Political tensions with China, potential export restrictions, and reliance on overseas resellers could threaten sales.

Over the weekend, reports emerged of an agreement with the US government allowing Nvidia and AMD to give 15% of Chinese chip revenue in exchange for export licences, potentially boosting growth by more than 20%.

Infrastructure is another concern. Analysts say customers now face delays from chip shortages, limited power grid capacity, and data centre cooling systems.

Some of Nvidia’s biggest clients could become direct rivals, challenging its 75% profit margin and long-term dominance in AI infrastructure.

Nvidia’s unprecedented weight in the S&P 500 closely ties the index’s performance to its fortunes. While demand for AI hardware remains high, the company’s growth trajectory depends on navigating political, infrastructure, and competitive pressures.

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West Midlands to train 2.3 million adults in AI skills

All adults in the West Midlands will be offered free training on using AI in daily life, work and community activities. Mayor Richard Parker confirmed the £10m initiative, designed to reach 2.3 million residents, as part of a wider £30m skills package.

A newly created AI Academy will lead the programme, working with tech companies, education providers and community groups. The aim is to equip people with everyday AI know-how and the advanced skills needed for digital and data-driven jobs.

Parker said AI should become as fundamental as English or maths and warned that failure to prioritise training would risk deepening a skills divide. The programme will sit alongside other £10m projects focused on bespoke business training and a more inclusive skills system.

The WMCA, established in 2017, covers Birmingham, Coventry, Wolverhampton and 14 other local authority areas in the UK. Officials say the AI drive is central to the region’s Growth Plan and ambition to become the UK’s leading hub for AI skills.

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eBay uses AI to attract more marketplace sellers

eBay is introducing a new AI-powered feature to help sellers respond to buyer questions, continuing its AI strategy to streamline selling. Over 10 million sellers have used these tools to create over 200 million listings, with about 500,000 AI-assisted listings generated daily.

The company has launched several AI tools over the past two years, including generative video, listing assistants, bulk upload features and photo background enhancements.

Executives see AI as a way to increase seller retention, expand inventory, and drive buyer traffic, particularly in a competitive market where Amazon, Etsy, and Poshmark offer similar capabilities.

While adoption is optional, eBay tests features with its seller community, making adjustments based on feedback to ensure tone and presentation feel authentic. The company views AI as essential to maintaining its place at the forefront of online marketplaces.

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Data breach hits cervical cancer screening programme

Hackers have stolen personal and medical information from nearly 500,000 participants in the Netherlands’ cervical cancer screening programme. The attack targeted the NMDL laboratory in Rijswijk between 3 and 6 July, but authorities were only informed on 6 August.

Data includes names, addresses, birth dates, citizen service numbers, possible test results and healthcare provider details. For some victims, phone numbers and email addresses were also stolen. The lab, owned by Eurofins Scientific, has suspended operations while a security review occurs.

The Dutch Population Screening Association has switched to a different laboratory to process future tests and is warning those affected of the risk of fraud. Local media reports suggest hackers may also have accessed up to 300GB of data on other patients from the past three years.

Security experts say the breach underscores the dangers of weak links in healthcare supply chains. Victims are now being contacted by the authorities, who have expressed regret for the distress caused.

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Turkish authorities detain Ethereum developer amid legal probe

Ethereum developer Federico Carrone, known as Fede’s Intern, was detained in Turkey over allegations of helping misuse the Ethereum network. The incident happened at Izmir airport, where authorities informed him of a pending criminal charge likely linked to his privacy protocol work.

After intervention from the Ethereum community and legal support, Carrone was released and allowed to leave. The case seems tied to blockchain privacy tools, which face rising government scrutiny.

Carrone’s team previously came under attention for Tutela, a study on Ethereum and Tornado Cash user privacy. He emphasised that creating privacy code does not make developers criminals, comparing it to blaming software creators for misuse.

Growing legal challenges face developers building privacy and self-custody tools. Tornado Cash co-founder Alexey Roman recently received a criminal conviction and may face prison.

Crypto advocates warn lawsuits against developers risk stifling innovation and highlight ongoing legal uncertainty.

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Blue Origin begins accepting cryptocurrency for space travel

Blue Origin has opened its doors to cryptocurrency enthusiasts, allowing passengers to pay for suborbital spaceflights in Bitcoin, Ether, Solana, USDt and USDC. Partnering with Shift4 Payments, Blue Origin will take direct wallet transfers from MetaMask and Coinbase for New Shepard flights.

The move adds to a growing trend of blockchain ventures in aerospace. Past projects have ranged from NFTs sent to space to the launch of satellites hosting decentralised networks.

Spacecoin XYZ recently began building an orbital blockchain network. World Mobile is also rolling out a decentralised 5G system using hydrogen-powered drones to deliver affordable, high-speed internet to underserved regions.

Blue Origin’s ties to crypto go back years. In 2021, Tron founder Justin Sun purchased a $28 million ticket for a Blue Origin flight, with the funds benefiting 19 space-related charities.

Following the journey, Sun called for global action to protect Earth, a message that resonates as technology and space exploration continue to intersect.

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