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.
Tencent is in talks to become Manus’s largest shareholder as investors race to reverse Meta’s $2 billion purchase of the AI agent startup, after Beijing ordered the deal undone.
SpaceXAI’s Grok 4.5 tied GPT-5.6 Sol for first on the SWE-Atlas-QnA coding benchmark, a narrow win that highlights the model’s real edge: efficiency and low cost.
A South Korean developer says Anthropic’s billing system tried to charge him $16.6 million despite being on the free plan with zero API usage, one of several billing complaints.
Anthropic extended free Claude Fable 5 access to July 19, its second extension in a week, as OpenAI removed usage caps and made GPT-5.6 Sol cheaper to run.
Apple sued OpenAI for trade secret theft, alleging former employees now at OpenAI stole confidential hardware information to build its first AI device. OpenAI denies it.
SK Hynix raised $26.5 billion in its Nasdaq debut, the largest US listing ever by a foreign company, as investors rushed to buy into the AI memory chip boom.
OpenAI is discontinuing ChatGPT Atlas, its standalone AI browser, on August 9, folding its agentic browsing into the new ChatGPT desktop app just nine months after launch.
Anthropic launched Reflect, a beta dashboard that shows users how they use Claude and nudges them toward healthier habits, a rare feature that can encourage using the product less.
OpenAI launched ChatGPT Work, a GPT-5.6 agent that pulls context from a user’s apps to produce finished docs, slides and sites, as it merges Codex into a unified desktop app.
SpaceXAI released Grok 4.5, a coding and agentic model trained jointly with Cursor that undercuts rivals on price and token use, though it trails Fable 5 on benchmarks.