ProductsProduct / feature launchBusiness, Funding & Industry · Large Language Models · Applications1 source · Oct 21, 2026

How we built ChatGPT’s novel ad stack for user trust and relevance

Learn how OpenAI built ChatGPT’s LLM-powered ad stack to understand conversational intent, keep ads separate from answers, and deliver relevant ads at scale.

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Hype check

Independently evaluated9 independent looks since

  1. Evaluation · Oct 21, 2026Benchmarking and Error Analysis of Deep Search and Deep Research LLM Agents
  2. Evaluation · Oct 21, 2026Beyond the Vote: When Do LLMs Add Value to Retrieval-Based Tabular Classification?
  3. Evaluation · Oct 21, 2026I built a small on-device voice front-end for local assistants: type any wake word, keep only your voice before STT (5 models, 7.5 MB, Apache-2.0, early preview)
  4. Evaluation · Oct 21, 2026China protests the US Deepseek ban while blocking ChatGPT, Claude, and Gemini at home
  5. Evaluation · Oct 21, 2026ALIAS: Evaluating Performance and Memorization in LLM-Written TLA+ Specifications
  6. Evaluation · Oct 21, 2026FrontierCS 2: A Benchmark for Computer Science R&D

Before this

  1. Oct 20, 2026Voxtral 3
  2. Oct 20, 2026[AINews] DeepSeek DeepInfer: Open Source SOTA Inference running 155T toks/day/cluster making $22m/day at ~80% margin for a 81 day payback
  3. Oct 20, 2026pydantic/pydantic-ai v2.58.0: v2.58.0 (2026-10-19)
  4. Oct 20, 2026Do Diffusion LLMs Scale? Testing Mercury 3 + Decide
  5. Oct 19, 2026Evaluating Agents on Highly Subjective Tasks
  6. Oct 19, 2026Advancing Coding in Low-Resource Programming Languages

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