Claude Opus 4.8: Capabilities and Reactions

Opus 4.7 Part 2: Capabilities and Reactions

Claude Opus 4.7 raises a lot of key model welfare related concerns.

Claude Opus 5.5: The System Card

Introducing the world’s most powerful model, at least by some measures like Artificial Analysis or any standard benchmark list, which is now Claude Opus 5.5.

Announcing VibeBench: The AI benchmark that measures what matters — how models like Opus-4.7 actually feel to use in real-world work.

My coworkers and I have been long-time users of Claude Code and Codex and are getting a ton of exposure to other models due to our deep dives into…

Introducing Claude 4

Discover Claude 4's breakthrough AI capabilities. Experience more reliable, interpretable assistance for complex tasks across work and learning.

Opus 4.7 isn't dumb, it's just lazy — Shimin Zhang

Some follow up experiments with Claude Opus 4.7 based on Simon Willison's Pelican Benchmark Shocker.

Introducing Claude Opus 5.5

Claude Opus 5.5 leads in agentic coding and knowledge work, and costs 40% less to run than Opus 5 on typical workloads.

Introducing Claude Opus 4.6

Better Models: Worse Tools

About an aggravating tool-calling regression in newer Claude models.

Models overview

Claude is a family of state-of-the-art large language models developed by Anthropic. This guide introduces the available models and compares their performance.

Opus 4.7 Part 3: Model Welfare

It is thanks to Anthropic that we get to have this discussion in the first place.

Anthropic Preps Opus 4.7 and Full-Stack AI Studio—While Sitting on Something Much Scarier - Decrypt

Anthropic’s Claude Opus 4.7 and new AI design tool signal a push into full-stack development, while its Mythos model raises concerns.

Introduction - How to Write an Inference Engine

A zero-to-hero guide to Muse Glimmer on Apple Metal, kvpack, and disaggregated NVFP4 prefill.

Some Movements of Models

Some Movements of Models

Anthropic Readies Opus 4.7 and Design Tool as VCs Offer $800 Billion Valuation

Anthropic is preparing to release Claude Opus 4.7 and a natural language design tool as early as this week, while venture capital firms have offered to invest at valuations exceeding $800 billion – more than double the company’s last official price tag.The model ID anthropic-claude-opus-4-7 appeared on Google Vertex AI’s quota management page for EU […]