#anthropic

Anthropic shipped Claude Fable 5 on June 9, 2026 at $10/$50 per 1M tokens with a 1M context window. Eight launch reports compared in one place.

We compared what Anthropic Mythos and OpenAI GPT-5.5-Cyber actually do on offensive testing tasks. Capabilities, refusal patterns, evals, and where each model breaks down.

Compare Claude Code /advisor and claude-code-router. Real examples, when to use each, and a decision matrix for routing in May 2026.

Eight common Claude Code /advisor errors with cause and fix: model not found, MCP conflict, 429, context overflow, auth, hooks, quoting.

Anthropic's Mythos and OpenAI's GPT-5.5-Cyber both ship locked behind allowlists. Here's what's inside each model, who actually gets access, and what the rest of us can build today.

Anthropic's new Labs preview turns a prompt into exportable prototypes, pitch decks, and one-pagers on-brand — without opening Figma or Keynote.

Claude Opus 4.7 launched April 16, 2026 with major coding upgrades, 3.75MP image support, and a new xhigh effort tier. But a silent tokenizer change makes it up to 35% more expensive than the sticker price. Full breakdown inside.

A comprehensive deep dive into Claude Managed Agents — Anthropic's hosted agent execution environment (public beta, April 2026). Covers the brain/hands architecture, full API walkthrough, real-world pricing, and when to use Managed Agents vs. building your own agent loop.