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.
Anthropic committed $150 million to Claude Corps, a fellowship paying 1,000 early-career workers to spend a year embedding AI in US nonprofits.
SpaceX is pitching investors on a vertically integrated AI strategy spanning chips, data centers and even compute satellites in orbit, bankrolled by Starlink’s profits.
SpaceX IPO sold 555.6 million shares at a fixed $135, nearly tripling the prior record as heavy demand bets on Musk despite steep losses and no path to profit.
Jeff Bezos’s industrial AI startup Prometheus raised $12 billion at a $41 billion valuation, emerging from stealth to build AI for engineering and manufacturing.
Google released DiffusionGemma, an open model that generates text in parallel blocks for up to four times faster output on local GPUs.
Xiaomi MiMo Code is a free, MIT-licensed coding agent with persistent memory and parallel reasoning, forked from OpenCode and aimed at hundred-step tasks.
GPT-5.6 is expected in June with what OpenAI calls meaningful gains over GPT-5.5, arriving alongside a ChatGPT overhaul and shifting public-listing plans.
OpenAI is weighing steep cuts to its token prices to win users from Anthropic, signaling a possible price war as both companies head toward IPOs.
Anthropic CEO Dario Amodei published an essay urging binding, FAA-style safety testing for frontier AI models, marking a shift from the company’s earlier focus on transparency.
Google AI Plus adds Gemini 3.1 Pro, Omni Flash video and family sharing while undercutting pricier ChatGPT and Anthropic subscription tiers in the US market.