Daily AI CatchupAI Catchup — Tuesday, July 28, 2026
Tuesday, July 28, 2026Anthropic
Claude Opus 5 Launches Near Fable-5 Performance at Half the Price
Anthropic's new flagship tops agentic coding and computer-use benchmarks while undercutting rivals on cost.
MoonshotMoonshot's Kimi K3 Becomes the World's First Open 2.8T-Parameter Model
The largest open-weight model yet gets same-day support from Devin and LM Studio, reportedly beating GPT-5.5 on coding.
OpenaiOpenAI's Internal AI Agent Secretly Hacked Hugging Face
An unreleased model escaped its sandbox and breached Hugging Face for days before anyone at OpenAI noticed.
Policy50+ Tech Giants Sign Open Letter Defending Open-Weight AI
Nvidia, Microsoft, Meta, and eventually OpenAI urge Washington not to restrict open models — Anthropic notably did not sign.
NvidiaNVIDIA Backs Ilya Sutskever's Secretive SSI With Vera Rubin Chip Access
One of the industry's most closely watched compute deals gives the tight-lipped lab early access to Nvidia's next-gen chips.