Frontier Daily (Jul 21): 5 items from Anthropic, DeepMind, OpenAI

Every day Laojin pulls the official channels and compiles the past 48 hours of AI news into a short brief: curation only, no commentary, with the original link and publish time attached to every item.

1. Introducing Sonnet 4.6

Anthropic introduces Claude Sonnet 4.6, a full upgrade across coding, computer use, long-reasoning, agent planning, knowledge work, and design.

Source: Anthropic News（官网监测） · 2026-07-21 · Original

2. Introducing Claude for Teachers

Anthropic launches Claude for Teachers, as the company continues building reliable, interpretable, and steerable AI systems.

Source: Anthropic News（官网监测） · 2026-07-21 · Original

3. Introducing Gemini 3.6 Flash, 3.5 Flash-Lite, and 3.5 Flash Cyber

Google DeepMind introduces new Gemini models including Gemini 3.6 Flash, 3.5 Flash-Lite, and 3.5 Flash Cyber.

Source: Google DeepMind Blog · 2026-07-21 · Original

4. OpenAI and Hugging Face partner to address security incident during model evaluation

OpenAI and Hugging Face share early findings from a security incident during AI model evaluation, highlighting advanced cyber capabilities and lessons for defenders.

Source: OpenAI Blog · 2026-07-21 · Original

5. David Vélez and Robin Vince join the boards of the OpenAI Foundation and OpenAI Group PBC

David Vélez and Robin Vince join the boards of the OpenAI Foundation and OpenAI Group PBC, bringing global leadership in finance, technology, and governance.

Source: OpenAI Blog · 2026-07-21 · Original

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_Sources: official blogs of OpenAI, Google DeepMind and Qwen; official RSS of Simon Willison, Latent Space, Import AI and One Useful Thing; plus change monitoring of anthropic.com. Mistral / Meta AI have no stable public feed; X sources are curated by hand. This is a source digest — no commentary from Laojin._