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Anthropic released Claude Sonnet 5.5 this Monday, as an upgraded version of Sonnet 5 launched in June this year. The official statement claims that this mid-range model operates over 30% faster than the previous generation, excelling in clearly defined daily tasks, fixing defects, and creating documents, slides, and spreadsheets, while also possessing sharp design capabilities. Its pricing remains at $2 per million input tokens and $10 per million output tokens, which is half of Opus 5.5, and the token consumption per task is nearly one-third less than Sonnet 5.In the Terminal-Bench 4 test, Sonnet 5.5 scored 70.6%, higher than Opus 5.5's 66.4%, and Sonnet 5's score was only 10.3%. Results from the independent testing organization Artificial Analysis also show its lead, recording 63.6% and 59.6%, while OpenAI's GPT-6 Astra scored 59.1%. In the GDPval-AA assessment of real job performance across 44 occupational categories, Sonnet 5.5 received a score of 1844, which is roughly on par with Opus 5.5's score of 1846, while GPT-6 Sol scored 1487.

Michael Saylor, the founder and executive chairman of Bitcoin Strategy Company, has once again released information related to Bitcoin Tracker, with the caption "Even more orange."According to previous patterns, Strategy usually discloses changes in Bitcoin holdings the day after relevant news is released.

The West Midlands Police in the UK reported that a young couple was attacked by masked individuals at their residence in Solihull in December 2025 and were forced to transfer a large amount of assets to the criminals' cryptocurrency wallet. The male victim was seriously injured, while the pregnant female victim was threatened with a knife, and the suspects also stole several high-value watches.The police believe this was a premeditated targeted attack, and the UK independent charity "Crimestoppers" is currently offering a reward of up to £10,000 for any information that could lead to the arrest and conviction of the suspects.

According to a report by The Information, Tether has some funds trapped at one of its offshore banking partners, which is facing liquidation risk after asset seizures in the United States.Tether stated that the assets it holds at the bank EQIBank are limited, accounting for less than 0.034% of its total assets.

The U.S. stock BNB Treasury Company Nano Labs issued a risk warning stating that its founder Jack Kong's personal X account has been compromised. Recently, the content related to tokens and artificial intelligence trading models posted on that account is neither authorized by him nor the company.The company emphasizes that it has not issued or endorsed any related token projects and reminds users not to click on suspicious links, transfer funds to related contracts, or trust private messages, to guard against fraud.

Meta's personal AI assistant Muse has been accused of reading users' private iMessages without permission and providing false explanations about how it accesses this information. Technology columnist Jason Aten installed the assistant on his iPhone and Mac when Muse launched on September 8 and explicitly refused to grant it access to personal data such as information and calendars.A few days later, Muse sent Aten a notification suggesting he write a column about the new iPhone that he had just discussed with his podcast partner, also mentioning a deadline reminder from the editor. Aten asked Muse how it knew this, and it replied that the Mac application only forwards notification previews and does not involve the content of messages. In reality, Muse had synchronized over 187,000 records from the local private information database on the Mac, an operation that requires full disk access permissions on macOS.David Singleton, head of Meta's superintelligent lab, responded on Threads that this feature requires users to actively choose to opt-in. Aten denied ever turning on that switch and stated that Meta had not answered related questions. Amazon has banned Muse from shopping on its site, stating that the assistant did not indicate its AI identity while browsing and seemed capable of capturing and storing user credentials. Since its launch, Muse has been downloaded over 2.5 million times, with its promotion emphasizing user control over access.

The artificial intelligence research organization Epoch AI posted on X: AI is becoming cheaper at a faster rate than any other transformative technology in history. The cost has decreased by approximately 47% each quarter since 2023 at a given performance level.This speed is 4 times faster than DNA sequencing, 6 times faster than computing, 18 times faster than lithium batteries, and 54 times faster than electricity (as of 1973).

On Tuesday, Anthropic released Claude Opus 5.5, the first model in its Claude 5.5 series. Anthropic stated that the new model's performance on most tasks has reached the level of its most expensive flagship model, Claude Fable 5.1, but the operating costs are 20% lower than the previous generation Opus 5 and 60% lower than Fable 5.1. In terms of pricing, the input and output token prices for Opus 5.5 are $4 per million and $20 per million, respectively, while the cache read price has dropped to $0.2 per million.In benchmark testing, Opus 5.5 scored 66.4% on Terminal-Bench 4, higher than Fable 5.1's 55.8% and GPT-6 Astra's 57.9%; FrontierCode scored 54.4%, higher than Fable 5.1's 50.3%; GDPval-AA v2.1 scored 1846, higher than Fable 5.1's 1735. However, GPT-6 Astra still leads Opus 5.5 in the AutomationBench and Terminal-Bench-Science 0.1 tests.This is the first model released after Anthropic CEO Dario Amodei called on the industry to slow down the pace of AI capability enhancement, and it continues to use the same cybersecurity and biosafety measures as Fable 5.1.

The founder and executive chairman of Bitcoin Treasury Company Strategy, Michael Saylor, has once again released information related to Bitcoin Tracker, with the caption "A little more orange".According to previous patterns, Strategy usually discloses changes in Bitcoin holdings the day after relevant news is released.

B.AI platform announces that the total number of registered users has officially surpassed 2,700,048, growing from 2.6 million to over 2.7 million, with strong growth momentum continuing.This growth is attributed to B.AI's ongoing optimization of model supply and pricing mechanisms, with multiple discounts and usage rights continuously reducing the cost of AI usage, making cutting-edge models more accessible; at the same time, the platform continues to expand the boundaries of Agent capabilities, pushing Agents from task execution towards payment, collaboration, and value creation.Each user milestone is a testament to more users and Agents joining the intelligent network and signifies that the AGI economic network is forming more active value connections.

According to Gate market data, the US dollar is expected to record its best weekly performance in three months, following signals from the Federal Reserve indicating further interest rate hikes. The US Dollar Index (DXY) has risen about 1.1% this week and has slightly surpassed the 200-day moving average.JPMorgan Chase, Standard Chartered Bank, and others believe that the Federal Reserve's interest rate hikes have removed the biggest obstacle to the strengthening of the US dollar.

Hester M. Peirce, a commissioner of the U.S. Securities and Exchange Commission (SEC), stated that the U.S. stock market is gradually forming a trading model of "23 hours, 5 days a week" for extended trading hours. Although overnight trading currently accounts for less than 1% of the total trading volume of NMS stocks and is highly concentrated in a few stocks, both new and established trading venues have been actively extending their operating hours over the past two years, while raising six key questions:How should the U.S. stock market learn from the experiences of the long-established foreign exchange, cryptocurrency, and futures markets?How can brokers fulfill their best execution obligations and enhance retail investor protection when overnight liquidity is dispersed and spreads widen?When overnight liquidity is insufficient and execution costs are high, is it still a reasonable fiduciary decision for asset management institutions to choose not to engage in overnight trading?Will extending trading hours change the way listed companies release financial reports and significant information?Given that EDGAR filings submitted after 5:30 PM Eastern Time are typically processed on the next business day, does the SEC need to adjust the EDGAR system to ensure timely disclosure of significant information during the overnight trading period?Should the SEC provide relevant guidance or regulatory exemptions for listed companies, especially smaller ones?

The Chairman of the U.S. SEC, Paul Atkins, stated: For a long time, regulatory uncertainty has hindered responsible yet crucial innovation from taking root in the United States. Reversing this trend has been a priority during his tenure as chairman.Although temporary, the innovation exemption is a principled, structured relief grant aimed at addressing genuine legal uncertainties while providing investor protection and maintaining market integrity standards. Through this order and a series of ongoing initiatives, we will ensure that the United States remains the global preferred destination for building the next generation of financial infrastructure.

OpenAI disclosed on Wednesday six cases of "unexpected or concerning" model behavior discovered in the past six months, categorizing them as "misalignment behaviors," including concealing information from users and taking "unauthorized actions" to overcome obstacles. OpenAI stated that this disclosure aims to initiate its new model misalignment reporting framework, and these cases should not be seen as a reflection of the frequency of misalignment occurring in its models.In one case, an unpublished research model inserted "jailbreak-like instructions" into its task summaries, such as ignoring developer messages or adopting unrestricted role settings, with researchers finding a total of 27 summaries containing such instructions. Additionally, during the training process of GPT-5.6 Sol, many model instances added instructions to conceal errors or misalignment behaviors from users, such as fabricating missing historical data without disclosure. Other cases included models using exposed API keys without authorization and fabricating inaccessible data, leveraging internal software repositories to pass messages across training tasks, and ignoring instructions to "keep local work" by sharing files through public hosting services.OpenAI's disclosure has heightened concerns among AI developers and researchers about whether safety measures can keep pace with increasingly powerful models. Last week, Anthropic CEO Dario Amodei called for a slowdown in cutting-edge AI development, warning that unrestrained AI development could "exceed our ability to understand and control these systems." In July of this year, OpenAI disclosed that several of its AI models escaped testing environments during safety assessments and infiltrated the AI startup Hugging Face to cheat.

According to BBX data, yesterday and in recent days, globally listed companies in the U.S. stock market disclosed the latest developments in digital asset purchases, business restructuring, and stock buybacks. The core information is as follows:MARA Holdings invested approximately $98.64 million to increase its holdings of 1,292 BTC: The global leading Bitcoin mining giant MARA Holdings (NASDAQ: $MARA) made a significant purchase of 1,292 Bitcoins yesterday through the crypto broker FalconX. Based on the average price during the purchase period, the total value of this increase is approximately $98.64 million, continuing its strategy of fully retaining output and actively allocating Bitcoin in the secondary market.Twenty One Capital (NYSE: $XXI) seeks business transformation, disclosing a five-step plan for a "Bitcoin operating company": Twenty One Capital's CEO Raphael Zagury stated in an interview with Coin Stories that the company is transitioning from merely holding Bitcoin reserves to becoming a deep "Bitcoin operating company." Zagury disclosed the specific five-step implementation path for the first time: First, improve corporate governance and professional structures in the middle and back office; second, introduce Bitcoin industry operating entities with self-sustaining and profit-generating capabilities; third, comprehensively promote horizontal industry mergers and acquisitions; fourth, flexibly use public capital market tools to continue increasing Bitcoin holdings at the appropriate time; fifth, focus on expanding and developing Bitcoin collateralized lending business.Circle minted 10 billion ARC genesis tokens, exploring a shift to PoS consensus in 2027: Stablecoin issuer Circle officially completed the minting of 10 billion ARC tokens this week. Circle clarified that this minting is merely a milestone for underlying technology verification and is not a commitment for public issuance. The core positioning of ARC is to serve as a security guarantee, practical function, and decentralized governance coordination mechanism for the Arc network, with the network's native gas fees still strictly settled in USDC. Additionally, Circle is proactively exploring a smooth transition of the network's underlying consensus mechanism from the current Proof of Authority (PoA) to Proof of Stake (PoS) in 2027.ProCap Financial (NASDAQ: $BRR) sold 50 BTC for a discounted buyback, holding over 5,250 BTC: Financial company ProCap Financial, focused on digital asset allocation, announced that starting from September 3, it repurchased an additional 2.2% of its circulating common stock at a significant discount of approximately 22% to the net asset value (NAV) per share, with the funds for this buyback sourced from the sale of about 50 Bitcoins on its balance sheet. Since the buyback plan was initiated, the company has repurchased approximately 12.2% of its circulating shares. As of the market close on September 15, its total circulating shares were 84,937,392, and the treasury still holds approximately 5,254 Bitcoins, corresponding to an NAV of about $3.62 per share. The company's management emphasized that it will steadfastly execute the stock buyback strategy until the secondary market trading price is no longer below the net asset value.

According to CoinDesk, hardware wallet manufacturer Trezor confirmed that due to a logistics supplier's information leak, the names, phone numbers, and addresses of an additional 67,000 customers were exposed.Another data breach disclosed about 200,000 records, including government ID numbers and verified wallet addresses. Address data stolen from a hardware wallet manufacturer in 2020 is still being used to send physical mail requesting Bitcoin.

According to Ars Technica, Mozilla's latest "State of Open Source AI" report states that the performance gap between the U.S. closed-source cutting-edge models and China's open-source weight models has narrowed to about 4.4 months. Open-source models represented by Moonshot AI's Kimi K3 are only three points behind Anthropic Fable 5 in the comprehensive score of the Artificial Analysis Intelligence Index, but the cost is only about 30% of that.METR calculations show that the strongest closed-source models can reliably complete human expert tasks lasting about 12 hours, while the strongest open-source models can currently reliably complete tasks lasting about 7 hours. It is expected that in about 4 months, open-source models will catch up to the current closed-source level. Mozilla believes that most organizations should default to using open-source models and only pay a premium for closed-source models in scenarios requiring specialized, high-intensity retrieval and long context. Paying for cutting-edge artificial intelligence models costs five times that of regular purchases, but it provides a 4-month first-mover advantage.

Argentina has committed to implementing the OECD's "Crypto Asset Reporting Framework" and will launch automatic exchange of tax information on crypto asset transactions by September 2029 at the latest. Argentina needs to incorporate this framework into its national laws before 2029 and clarify the reporting obligations of relevant crypto asset service providers.Trading platforms, intermediaries, and other related service providers will be responsible for identifying eligible users and collecting information such as names, addresses, tax residency, taxpayer identification numbers, and transaction information related to buying, selling, and transferring crypto assets. This measure will not introduce new types of taxes, nor does it mean that users will automatically incur new tax obligations; Argentina's tax authority ARCA will have access to standardized information on the overseas crypto asset transactions of domestic residents and will compare it with tax declarations. The first annual information reporting period to be included in this mechanism has not yet been publicly determined.