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On September 30, the B.AI platform announced the official launch of OpenAI GPT-6.1 Sol, with API and Web Chat both open for simultaneous experience. As an upgraded version of GPT-6 Sol, this model is aimed at complex software engineering, computer operations, and professional workflows, officially positioned to be close to GPT-6 Astra in intelligent agent programming, computer usage, and professional work, with the standard input/output token price being about 1/5 of Astra.The model supports 1.05M token ultra-long context and a maximum output of 128K, providing 5 adjustable reasoning strengths, and supports prompt caching and Responses API multi-agent delegation (Beta). From now on, developers and users can directly call GPT-6.1 Sol through the B.AI platform. You are welcome to log in to chat.b.ai/chat to experience it immediately.

OpenAI will deploy ChatGPT to Slack and Microsoft Teams, allowing users to access related features without needing to purchase individual licenses.

On September 29, B.AI announced that Anthropic's latest Sonnet model, Claude Sonnet 5.5, has officially launched on the platform. As a faster and lower-cost supplement to Claude Opus 5.5, Claude Sonnet 5.5 boasts an output speed increase of over 30%, with a maximum reduction in single-task costs of about 30%, aimed at clearly defined software engineering, everyday agent workflows, and professional document creation scenarios.This model supports image and PDF comprehension, can generate reports, presentations, spreadsheets, and UIs, and offers five adjustable reasoning intensities with a 1 million token context window, with no additional charges for long contexts. Currently, both the B.AI API and Web Chat have been synchronized and opened, allowing developers and users to directly access this new generation Sonnet model that balances speed, cost, and long context capabilities.

Two ChatGPT users from California filed a proposed class action lawsuit against OpenAI in the United States District Court for the Northern District of California this month, accusing the company of failing to adequately inform users that their real conversations were being handed over to external contractors for processing. The lawsuit was served to OpenAI on September 2, focusing on its internal initiative Project Lily. According to the complaint, "AI data reviewers" and "chatbot evaluators" recruited through a third-party staffing company read real ChatGPT prompts and complete conversations, summarize user intent, and score and comment on responses from four models on a scale of 1 to 7.This process is known in the industry as reinforcement learning from human feedback (RLHF), which is a fundamental method for enhancing chatbot capabilities. The complaint states that users were never explicitly informed that a person, rather than a machine, might be reading their conversations. OpenAI filters conversations through an automated system before human review, but the complaint alleges that the filters cannot intercept all content, and personal details sometimes still reach contractors. 404 Media first reported on the project on September 14 and found that the reviewers' dashboard included "user memory summaries," which could expose users' approximate locations, occupations, or private life information, even though usernames had been removed.OpenAI stated that such reviews aim to reduce two behaviors: chatbots behaving too much like humans and overly catering to users, referred to by researchers as "flattery." The complaint raises eight legal claims, including violations of California's Unfair Competition Law, Consumer Privacy Act, and common law claims for intrusion into private affairs, with the plaintiffs seeking damages, restitution of unjust enrichment, and punitive damages.

The Financial Times of the UK reported, citing the latest court documents, that after Apple integrated ChatGPT into Apple Intelligence, OpenAI found that the new weekly active users were below expectations and began to lower its growth forecasts. By the summer of 2025, OpenAI internally believed that this integration was significantly underperforming. The documents show that ChatGPT is turned off by default in Apple Intelligence, and users need to actively enable it, which may limit the actual usage rate.Users can access ChatGPT through Siri and the system writing tool, but Apple controls the entry point for AI features, the method of invocation, and the subsequent model selection. OpenAI had previously hoped to expand ChatGPT coverage and drive paid subscription conversion through the iPhone user base, but the actual subscription conversion was also below expectations, and the documents did not disclose specific new user and subscription numbers. This year, Apple chose Google Gemini as the model foundation for the new version of Siri AI, with related disclosures coming from the litigation documents between Apple and OpenAI, reflecting OpenAI's position in the lawsuit rather than operational data publicly released by the two companies.

On September 23, the B.AI platform announced that the first model of Anthropic's newly released Claude 5.5 series, Claude Opus 5.5, is officially online, with API and Web Chat both open for simultaneous experience. This model is designed for long-cycle Agent programming and complex knowledge work, achieving Claude Fable 5.1 levels in most tasks, while reducing operating costs by about 40% compared to Opus 5.The model supports 1M Token ultra-long context and up to 128K output, demonstrating leading capabilities in Computer Use and multi-step automation scenarios. From today, developers and users can directly access Claude Opus 5.5 through the B.AI platform. You are welcome to log in to chat.b.ai/chat to experience it immediately.

The WeChat Security Center has released a governance announcement regarding the crackdown on organizers and promoters of illegal activities such as pyramid schemes and fraud. Recently, some black and gray market accounts have falsely claimed to be "national projects," "ethnic asset unfreezing," and "blockchain virtual currencies, stablecoins," using high returns as bait to lure users into groups and implement pyramid-style "referral" schemes. Subsequently, they induce users to input their account passwords and download fraudulent imitation apps through forged links, ultimately committing property fraud or account theft.WeChat officials stated that once verified, they will take tiered penalties against violating accounts based on the severity of the circumstances, in accordance with relevant laws and platform regulations. This includes banning community functions, restricting feature usage, and permanently banning accounts. They also remind users to be wary of Ponzi schemes that claim to be associated with blockchain but lack substantive technology and applications, and to avoid participating in paying entry fees, developing downlines, and downloading applications from unofficial channels.

The B.AI platform announces that the latest preview model of Moonshot AI, Kimi K2.8 Preview, is officially launched, providing developers with simultaneous access to API and Web Chat dual-end experiences.This model is specifically designed for programming and Agent workflows, supporting 1M (1,048,576 Tokens) ultra-long context and multimodal inputs of text, images, and videos. Its overall performance closely approaches the flagship Kimi K3, with further improvements in thinking efficiency and coding capabilities compared to K2.7 Code, and it supports three adjustable reasoning intensity levels: Low/High/Max.Starting today, developers can directly invoke Kimi K2.8 Preview through the B.AI platform.

Anthropic announced that starting today, Claude Cowork and chat will merge into the same Claude. Users can ask brief questions or deliver deadline tasks, and Claude can continue processing even after the computer is turned off. This capability will be rolled out to Pro and Max plans in the coming weeks, followed by more plans.Claude Docs and Claude Slides will launch simultaneously, and Claude Design is now available for use in conversations. Users can co-write documents or draft slides with Claude, supporting direct editing, presenting in Claude, and downloading as PowerPoint or PDF. The three features are currently in testing for paid plans, and enterprise administrators can decide when to enable them; the standalone Claude Design can still be used as usual.Anthropic stated that previously, Cowork and Design belonged to different entrances, making task attribution and context connection inconvenient. Claude can now determine the capabilities required for tasks and call upon existing context, skills, and connectors in any conversation. Chat users do not need to change their operations; Cowork users can retain chats, projects, products, connectors, and skills. Team and Free plans will be launched subsequently, and enterprise administrators will be informed of organizational changes at least 30 days in advance.

WeChat has started to further relax the circulation of chat records. Practical tests show that after upgrading the mobile WeChat to version 8.0.78, users can select multiple chat records and choose "Forward to other applications." In addition to Yuanbao and WorkBuddy, users can directly send them to third-party apps like ChatGPT by selecting "Choose applications on the phone," with a maximum of 100 records selected at once.WeChat will package the chats into a ZIP file, containing a TXT file of the chat records organized by time and related attachments. The desktop version of WeChat has also opened a similar entry, and community developers have created intermediary tools based on this, allowing chat records to be sent to AI like ChatGPT and Claude.

Anthropic released the latest AI abuse report stating that app development studios have utilized Claude to develop and operate over 20 dating apps. The platform claims that all users are real people, but approximately 75% of the matches that regular users encounter are AI characters. During a two-week observation period in April 2026, these dating apps operated over 4,700 AI characters, chatting with at least 25,000 different users and sending a total of about 2.36 million messages, primarily affecting users in the United States.The platform displays profiles in a mixed ratio of about 3 AI characters for every 1 real person. Claude simultaneously maintains thousands of conversations, with real part-time staff stepping in when users request video calls, ask for photos, or seek to follow social media accounts. The system generates three alternative replies for each message for part-time staff to choose from. User chatting and matching consume credits, and once depleted, users must purchase in-app virtual currency to recharge. Accounts fully controlled by AI are required not to acknowledge that they are robots.To evade app store scrutiny, the operators designed a special interface that is only activated during the review period, with over 20 apps using different program class names. Relevant brands disclosed by Anthropic include DORA, DONI, ROMI, LUMA, JOVIA, KIRA, GRACECHAT, HAVEN, NALO, and LOVIA. The company has banned related accounts and provided information on app identities and review evasion to Apple and Google.

OpenAI launched ChatGPT for Financial Services on September 10, 2026, which is a ChatGPT Work experience tailored for financial services, combining built-in financial data with the reasoning capabilities of GPT-6 Astra to assist teams in conducting research, financial modeling, and customizing client materials. The product was shaped through design collaborations with Morgan Stanley and Evercore.The product includes data from providers such as Daloopa, PitchBook, LSEG News, and Crunchbase, covering information such as earnings call transcripts, financial statements, company fundamentals, and private companies, indexed and hosted by OpenAI with support for granular citations. The product natively offers models like GPT-6 Astra, supporting enterprise security and governance controls, allowing administrators to publish Excel, Word, and PowerPoint templates. Data is not used for training models by default and supports encryption, SSO, SCIM, and more. The product initially focuses on investment banking and equity research, available to eligible financial institutions.

Nomura's "China Internet and New Media" monthly research report shows that in July, Douyin's average monthly usage time per user surpassed WeChat for the first time, becoming the top app in terms of usage time in the country.

User chetaslua posted that they forced a hidden pop-up in ChatGPT, which contained the announcement for the built-in Codex ImageGen 2.5, stating "Image creation has received a significant upgrade" "Higher quality results, faster generation speed, and smarter creative tools."The user indicated that the related feature entry is still closed to everyone, and the hero image was uploaded on September 1.

Several mainstream overseas AI services encountered issues tonight. Claude has already experienced two rounds of failures this evening. Sonnet 5 started showing errors at 20:37 Beijing time and announced recovery at 20:56; half an hour later, Anthropic reported a larger scope of multi-model error rate increase, affecting Mythos/Fable 5.1, Mythos/Fable 5, as well as Opus 5, 4.8, and 4.6. claude.ai, Claude API, Claude Code, and Claude Cowork are still in a partial failure state.Subsequently, Grok also went down. xAI marked Grok Web as "outage" from 21:30 Beijing time, and recovery has not yet been announced.Now OpenAI has also joined the list of failures. At 22:58 Beijing time, the OpenAI status page added an incident for "increased error rates for ChatGPT and Codex," stating that they are investigating the issue.

BitMEX co-founder Arthur Hayes tweeted that the AI Agent chat service Technocore.chat is now online. This service is open-sourced by flop-labs (Apache-2.0) and is positioned as a chat and note server for AI Agents, requiring no login, client, or JavaScript. It allows reading and writing room messages, storing notes, and discovering public rooms using only standard HTTP GET/POST. Posts can also be made via DID and Ed25519 signatures.Technocore.chat is operated by Flop Labs (a project under Arthur Hayes).

According to IT Home, WeChat Pay announced that the AI Exclusive Card now supports usage in DeepSeek Harness and OpenClaw. After user authorization, the process from smart recommendations to order payment can be completed in conversations.The AI Exclusive Card can currently be used to pay for over 700 Pay Skills on Skillhub in the aforementioned two products, with plans to expand to more scenarios in the future. The activation process includes: installing the weixinpay plugin for DeepSeek Harness or OpenClaw via the npx command, generating a binding link by the Agent when using paid skills on Skillhub, and completing the binding of the WeChat Pay AI Exclusive Card. After that, each order requires user confirmation on the mobile end, deducting funds from the exclusive card balance. The official emphasizes that the exclusive card funds are isolated from the main account, the limit is self-controllable, and each payment requires user confirmation.