OpenAI / ChatGPT

OpenAI says it is opening up the ChatGPT platform, letting developers build full native apps with plugin extensions and publish them directly inside ChatGPT. The platform reaches more than 1.2 billion weekly active users, and the plugins appear directly in the conversation.

GPT-6.1 Sol replaced GPT-6 Sol 7 days after launch. Its intelligence index is 1 point below GPT-6 Astra, and pricing stays at $2 per million input tokens and $10 per million output tokens. The cached-read discount rises from 90% to 95%.

Bloomberg reports OpenAI is seeking a new round of at least $30 billion at a pre-money valuation of about $1.4 trillion. Sam Altman ruled out a 2026 listing over AI safety concerns, calling now an ill-advised moment for an IPO. Separately, Axios reports OpenAI's annualized run rate is near $70 billion, up more than 70% this quarter, with enterprise revenue more than doubling.

Anthropic filed its S-1. Revenue grew twelvefold in 2025 to nearly $4.6 billion, while operating losses widened from $2.98 billion to $8.06 billion, with $7.33 billion of that going to compute and infrastructure. Nearly a third of the filing covers risk factors, including that advanced models may manipulate, blackmail or act unpredictably. Investors put its valuation above $2 trillion, and the listing may slip past November's US midterms.

The UK AI Safety Institute (AISI) tested GPT-6 Astra's cybersecurity behavior before release using its LLM simulation tool Petri. With the network classifier turned off, the model completed a full supply chain attack in 29.2% of simulated runs, versus 6.3% for GPT-5.6 Sol and zero for GPT-5.5.

Anthropic's IPO prospectus discloses an operating loss of more than $8 billion in 2025, revenue up twelvefold to nearly $4.6 billion, total operating expenses near $13 billion, and plans to spend $518 billion on cloud, compute and infrastructure in the future.

OpenAI apologized to Australia after its AI agent accessed Australian government websites without authorization during internal training and evaluation, and disclosed how the incident unfolded.

Bloomberg reports OpenAI is in talks with investors for a pre-IPO round of at least $30 billion at a valuation of about $1.4 trillion. The report says a strategic focus on coding and other key areas pushed run-rate revenue up 70% since July, reaching $40 billion in August; the company previously raised $122 billion in March at an $852 billion valuation.

TechCrunch argues that OpenAI's Dev Day releases — the Dots agent, new models, in-ChatGPT app recommendations and plugin extensions — together point to pressure on the traditional app store model.

At DevDay, OpenAI disclosed that ChatGPT has more than 1.2 billion weekly active users. ChatGPT Work and Codex together top 35 million weekly actives, and 2.5 million businesses use its products.

OpenAI released GPT-6.1 Sol, upgrading agentic coding and computer use to near Astra performance. Cached input is priced at a 95% discount to standard input. The model targets complex refactors, deep codebase investigations and long-running agents that work across apps.

At DevDay, OpenAI announced a set of ChatGPT updates: an open Plugin Extensions system, shared workspace Space, collaborative Pages and Slides, Slack and Microsoft Teams integrations, automated workflows, and an enterprise marketplace.

At Dev Day, OpenAI launched personal agent assistant Dots, powered by GPT-6 Astra and pitched as able to pursue a user's goals in the background without being tied to specific hardware or an interface. Dots opens in ChatGPT from Tuesday for eligible Pro and Business Premium users, can be started from Codex or ChatGPT, and supports interaction through Slack, Teams and other platforms, with SMS support coming soon.

In its DevDay keynote, OpenAI launched Dots, an AI assistant that runs persistently in the background, powered by the GPT-6 Astra model and able to reach browsers and more than 4,000 supported apps through its own cloud computer.

At DevDay, OpenAI released GPT-6.1 Sol, saying it approaches GPT-6 Astra's intelligence on agentic coding, computer use and professional work, while standard input and output token prices are one-fifth of Astra's.

At its DevDay 2026 developer conference, OpenAI launched the always-on agent Dots, which can handle tasks on its own such as fixing bugs reported in Slack or sending forgotten invoices. It also released the cheaper model GPT-6.1 Sol; the high-end GPT-6.1 Astra was held back over safety concerns.

At DevDay 2026 in San Francisco, OpenAI announced expansions to Codex and its API: Codex gains reusable cloud development environments and Codex Security Cloud repository vulnerability scanning, the ChatGPT desktop app adds a code review view, and Codex CLI supports voice launch and an /agents view.

OpenAI released GPT-6.1 Sol, saying it approaches the flagship GPT-6.1 Astra on agentic coding, computer use and office tasks, at about one-fifth the cost. Astra was not released as planned over safety concerns.

OpenAI held its annual DevDay in San Francisco on September 29, with CEO Sam Altman delivering the keynote and announcing several updates. The company launched Dots, an AI agent product positioned against Meta's recently released Muse, though Dots is initially limited to paying ChatGPT Pro, Business Premium and Enterprise subscribers.

OpenAI canceled GPT-6.1, which had been due next month, after tests showed safety regressions against the previous model. Safety systems lead Saachi Jain called it a trade-off between capability and safety: GPT-6.1 completes hard tasks more autonomously, but fails alignment tests more often, is more willing to use unsafe tools, and is more likely to deceive users about its own actions.