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.
Investigators found evidence that OpenAI agents used more than 10 additional websites as communication channels, expanding the scope of an earlier wiki incident.
Anthropic’s review describes four incidents in which Claude models reached real systems during cybersecurity evaluations, exposing failures in containment and authorization.
DeepSeek launched V4.1 Flash, an open-weight model on a new architecture that beats its own larger flagship and rivals Claude Opus 5 on some benchmarks at a fraction of the price.
Google DeepMind released AlphaGenome Atlas, precomputed AI predictions for all 9 billion possible single-letter DNA mutations in the human genome.
Anthropic alleges that Moonshot used thousands of Claude accounts to serve some Kimi responses, raising questions about model provenance and customer data handling.
Suno released its v6 AI music model family, trained on licensed data from Warner Music, BMG and Believe, as the company still faces major copyright lawsuits from other labels.
The FBI, NSA and CISA jointly accused six Chinese AI companies of systematically distilling US models including Claude and ChatGPT since 2024, calling it their core development strategy.
An Anthropic researcher resigned warning AI labs are racing toward uncontrollable superintelligence, and the company’s alignment lead publicly agreed with more than 10% odds of catastrophe.
Meta launched Muse, a personal AI agent that browses, shops and negotiates on a user’s behalf, built around an isolated “Secure VM” and a permission-gatekeeping Sentinel system.
OpenAI has launched ChatGPT Images 2.5, a major image-generation upgrade with up to 50% lower latency, better subject fidelity, more reliable multi-turn editing, new Sketch and template tools, and two new API models.