Retrieval-augmented generation, or RAG, combines a generative model with a search step that supplies relevant information at request time. A system converts the query into a searchable representation, retrieves passages from approved sources, and includes them as context for the model’s response. This approach can provide current or organization-specific facts without retraining the model and can support citations. Quality depends on document preparation, indexing, permissions, retrieval ranking, context limits, and the model’s ability to use evidence correctly. RAG reduces some unsupported claims but does not eliminate them: sources may be outdated, relevant material may be missed, and the model may still distort or ignore retrieved information.
OpenAI buys Neptune for under $400 million in stock, gaining advanced AI model tracking tools and strengthening capabilities in large-scale AI development.
OpenAI introduces an experimental “confessions” system that rewards honest self-reporting of mistakes in GPT-5 Thinking models, aiming to improve AI safety and visibility of failures.
AWS introduced new tools for enterprise customers to build and fine-tune custom large language models, alongside AI infrastructure offerings for on-premises deployments.
Amazon’s AI shopping assistant Rufus saw a sharp spike in Black Friday usage, fueling significantly higher purchase-conversion rates compared with non-AI sessions, according to new data from Sensor Tower and Adobe Analytics.
Amazon employees demand ethical AI practices, warning that the company’s fast-paced AI rollout risks worker safety, democratic oversight, and environmental sustainability.
OpenAI and Perplexity introduced AI shopping tools this week, helping users find products through chat-based queries. Experts say startups with niche datasets may still outperform general-purpose chatbots.
Nvidia reported strong third quarter results driven by soaring demand for its data center GPUs and Blackwell architecture. The company raised its outlook as AI infrastructure spending accelerates.
Anthropic is committing $30 billion in Azure compute as part of a major new partnership with Microsoft and Nvidia, expanding Claude and deepening collaboration on AI infrastructure.
xAI has launched Grok 4.1, a major model upgrade designed to deliver more creative, emotionally aware, and coherent interactions, with new Thinking and Non-Thinking variants now live across all xAI platforms.
Alibaba.com unveiled AI Mode at CoCreate Europe, integrating agentic AI into its platform to help businesses discover suppliers, optimize sourcing, and automate trade processes.