Descriptions:
Matthew Berman goes live the day Claude Opus 4.8 drops, walking through the announcement in real time and running live tests with roughly 2,000 viewers watching. The stream covers the model’s key improvements over Opus 4.7 — sharper judgment, improved long-session autonomy in Claude Code, and a fast mode that delivers 2.5x the speed at the same price. Regular pricing holds at $5 per million input tokens and $25 per million output tokens; fast mode pricing in extended context is $10 and $50 respectively.
Live coding tests include building an HTML video editor interface and a Space Invaders game using Opus 4.8 on auto mode, plus Berman’s recurring car wash test to probe reasoning consistency. Dynamic workflows — Anthropic’s new Claude Code research preview that orchestrates tens to hundreds of parallel sub-agents for large tasks — gets significant airtime, with Berman connecting the feature’s release to Anthropic’s recently expanded compute access through its xAI Colossus partnership.
The stream’s biggest reveal: Anthropic is already previewing Claude Mythos, a model described as a new capability class above Opus, currently being used by select organizations for cybersecurity work. Anthropic states that stronger safeguards are needed before general release but expects to make Mythos-class models available to all customers within weeks. For anyone tracking the competitive frontier model landscape, this stream captures the community’s immediate reaction to a busy day in AI.
📺 Source: Matthew Berman · Published May 28, 2026
🏷️ Format: Livestream
