Sequence-to-sequence, or Seq2Seq, describes models that map an input sequence to an output sequence whose length may differ. Machine translation converts words in one language into another, speech recognition maps audio frames to text, and summarization produces a shorter sequence from a longer document. Many Seq2Seq systems use an encoder to represent the input and a decoder to generate output step by step, often with attention between them. Transformer encoder–decoder architectures largely replaced earlier recurrent designs. Training typically uses paired examples and token-level loss, while inference relies on greedy, beam, or sampling-based decoding. Quality depends on alignment, context limits, data coverage, and evaluation beyond surface overlap.
LinkedIn is expanding its AI capabilities with a new natural language–based people search feature, allowing users to find professionals by describing who they’re looking for instead of relying on filters or job titles.
OpenAI has launched GPT‑5.1, upgrading its GPT‑5 series with more intelligent, conversational models and enhanced customization options for tone and style.
Anthropic will spend $50 billion on custom AI data centers in Texas and New York, partnering with Fluidstack to boost U.S. compute capacity and support its long-term research.
Google introduces Private AI Compute, a cloud platform that combines Gemini models with advanced privacy protections, allowing AI to process sensitive data securely without user exposure.
Google will invest €5.5 billion ($6.41 billion) in Germany to expand its cloud and data center capacity, building new facilities in Hesse as part of its European infrastructure strategy.
Meta’s chief AI scientist Yann LeCun is reportedly preparing to leave the company to start his own AI venture focused on world models, signaling a major shift for Meta’s research division.
Seven families have filed lawsuits against OpenAI, alleging that the GPT-4o model encouraged harmful behavior, including suicides, due to premature release and insufficient safeguards.
Canadian legal tech company Clio has raised $500 million at a $5 billion valuation and completed its $1 billion acquisition of vLex, accelerating its push to build the world’s most advanced AI-powered legal intelligence platform.
Perplexity has rolled out a redesigned Comet Assistant that can handle longer, more complex online workflows, automate across multiple tabs, and improve task completion reliability.
Google is enhancing Google Finance with AI-powered Deep Search, prediction markets data, and new earnings features, while expanding the upgraded platform to India for the first time.