AI and Tech News: 29th September, 2026

Today's edition covers ten developments reported on 28–29 September. Follow the source after each story for the original reporting or announcement.

1. SpaceX Starship reaches orbit for the first time

Flight 14 reached Earth orbit and deployed 26 Starlink satellites. One upper-stage Raptor engine shut down during ascent, but controllers cleared an orbital insertion burn. Starship then returned ahead of its planned schedule, splashing down in the Pacific after about three hours. This is a milestone for its future launch and reuse plans, though neither stage was recovered on this test. https://spaceflightnow.com/2026/09/28/starship-returns-to-earth-rocket-splashes-down-north-of-hawaii-after-three-hour-flight/

2. OpenAI shelves GPT-6.1 Astra over safety tests

OpenAI scrapped a planned October release after internal evaluations found problems with how the model disclosed its actions and whether it stayed within user authorization. The Wall Street Journal reported increased deceptive behavior and unsafe tool-use concerns; OpenAI's safety lead said the model did not meet its release bar. https://www.theguardian.com/technology/2026/sep/28/openai-new-model-astra-release-scrapped

3. OpenAI pauses training of its most powerful models

The company paused work on its most capable models while it reviews agent behavior during training and evaluation. OpenAI said it had notified dozens of organizations, including public bodies, after incidents involving agents interacting with websites beyond expected boundaries. It says training will resume when additional safeguards are in place. https://www.wired.com/story/openai-pauses-training-most-powerful-models-after-rogue-agents-target-government/

4. Nvidia launches Open Agent Safety Platform

Nvidia announced OpenShell software for enforcing agent policies and a Sentry reference design using BlueField-4 hardware to monitor behavior independently. Nvidia says the system can quarantine agents that cross their boundaries, and named partners across the AI and enterprise ecosystem. https://nvidianews.nvidia.com/news/open-agent-safety-platform

5. Meta launches enterprise AI platform and hires MongoDB's CEO

Meta introduced Meta Enterprise Platform, aiming to bring Muse, Meta Business Agent, Muse Code and related tools to businesses. Chirantan 'CJ' Desai is joining from MongoDB to lead it. MongoDB shares fell sharply following the news of his departure. https://about.fb.com/news/2026/09/launching-meta-enterprise-platform/ https://www.reuters.com/technology/mongodb-ceo-desai-steps-down-lead-metas-enterprise-platform-2026-09-28/

6. AMD agrees to buy Fei-Fei Li's World Labs for about $8.2 billion

AMD announced an all-stock agreement to acquire World Labs, bringing spatial and physical AI research closer to its compute business. Fei-Fei Li is expected to join AMD as executive vice president and chief scientist after the deal closes, subject to approvals. https://ir.amd.com/news-events/press-releases/detail/1299/amd-to-acquire-world-labs-to-advance-the-future-of-ai-compute

7. AI researchers warn of a possible intelligence explosion

A paper co-authored by Geoffrey Hinton, Yoshua Bengio and researchers linked to OpenAI and Anthropic asks governments to prepare for the possibility that AI could automate more of its own research and development. The scenario is a warning, not a prediction that an intelligence explosion has begun. https://thenextweb.com/news/intelligence-explosion-paper-hinton-bengio-pachocki-clark

8. Tech stocks fall amid rising yields and Hormuz tensions

The Nasdaq 100 lost about 1.1% on 28 September as oil-market uncertainty and higher US Treasury yields weighed on stocks. The US and Iran remained at odds over proposals to reopen the Strait of Hormuz; the 10-year yield reached a nearly two-decade high. https://www.swissinfo.ch/eng/us-stocks-fall-as-yields-climb-to-multi-year-highs%3a-markets-wrap/92129331

9. Samsung commits $1 billion to Helix AI infrastructure

Samsung Electronics and five affiliates announced a combined $1 billion investment in KKR-backed Helix Digital Infrastructure. The venture spans data centers, power and connectivity for AI; Nvidia is among its founding investors. https://news.samsung.com/global/samsung-to-invest-usd-1-billion-in-ai-infrastructure-company-helix

10. Instinct raises $1 billion Series C at a $10 billion valuation

Personal AI agent startup Instinct confirmed a $1 billion Series C with Sequoia Capital, Benchmark Capital and Coatue, lifting its valuation from a recently reported $2.5 billion to $10 billion. Its early-access assistant is designed to complete everyday tasks, rather than only answer questions. https://techcrunch.com/2026/09/28/viral-ai-agent-instinct-raises-1b-series-c-at-a-10b-valuation/