CLAUDE LABJP
RATELIMIT — Claude API rate limits were raised. Sonnet and Haiku limits now match Opus at every usage tier, leaving more headroom for parallel workloadsTIERS — Usage tiers were consolidated into three: Start, Build, and Scale — a clearer picture of where your usage sitsRETIRE — The Developer Platform retired Claude Sonnet 4 and Opus 4 (…-20250514). Code referencing those old model IDs needs migratingFABLE5 — Claude Fable 5 is now included in Max and Team Premium plans, available at 50% of the limitFASTEND — Fast mode for Claude Opus 4.7 is removed on July 24 — two days left. Move any speed: 'fast' calls to fast mode on Opus 4.8CCODE — Claude Code keeps shipping stability updates: background sessions for /fork, smarter /resume and /background, and stronger safeguards for WebSearch, subagents, and BashRATELIMIT — Claude API rate limits were raised. Sonnet and Haiku limits now match Opus at every usage tier, leaving more headroom for parallel workloadsTIERS — Usage tiers were consolidated into three: Start, Build, and Scale — a clearer picture of where your usage sitsRETIRE — The Developer Platform retired Claude Sonnet 4 and Opus 4 (…-20250514). Code referencing those old model IDs needs migratingFABLE5 — Claude Fable 5 is now included in Max and Team Premium plans, available at 50% of the limitFASTEND — Fast mode for Claude Opus 4.7 is removed on July 24 — two days left. Move any speed: 'fast' calls to fast mode on Opus 4.8CCODE — Claude Code keeps shipping stability updates: background sessions for /fork, smarter /resume and /background, and stronger safeguards for WebSearch, subagents, and Bash
ARTICLES

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All (786) Claude AI (133) Claude Code (320) Cowork (54) API & SDK (279)
API & SDK/2026-04-13Advanced

Building Production Conversational AI with Claude API — Context Management, Long-Term Memory, and Safety Filters

Solve context explosion, memory loss, and safety risks in production chat systems with a three-layer memory architecture and integrated guardrails using Claude API

API & SDK/2026-04-12Advanced

Testing Claude API Applications — Unit, Integration, and E2E Patterns That Hold Up Against Probabilistic Output

Solve the 'AI output changed and broke my tests' problem for good. Learn to combine mocks, semantic assertions, and snapshot testing into a practical test design pattern for Claude API applications.

Claude AI/2026-04-12Beginner

Why Claude Forgets What You Said — And 5 Fixes That Actually Work

Claude losing track of your instructions mid-conversation? Learn why context windows cause this and 5 practical strategies to keep Claude on track in long chats.

Claude Code/2026-04-12Advanced

Claude Code Sub-agent Patterns — Designing Autonomous Task Decomposition and Parallel Execution

Dissect Claude Code's internal Sub-agent architecture and learn concrete design patterns for task decomposition, parallel execution, and result merging in your own projects.

API & SDK/2026-04-12Advanced

Claude Managed Agents Sandbox Design: Running Autonomous Agents Safely in Production

A deep dive into the sandbox architecture of Claude Managed Agents, with production-ready security patterns and implementation code for running autonomous agents safely.

API & SDK/2026-04-12Advanced

Intelligent Model Routing with Claude API — Auto-Selecting Sonnet 4.6 and Haiku 4.5 for Optimal Cost and Quality

Build an intelligent routing layer that automatically selects between Claude Sonnet 4.6 and Haiku 4.5 based on request complexity. Covers classifier design, circuit breakers, fallback chains, and cost monitoring for production deployments.

Claude AI/2026-04-12Advanced

Project Glasswing Explained: Next-Generation Enterprise Defense Using Claude Mythos

Glasswing's operational model, partner scenarios, ethical AI security challenges, responsible disclosure frameworks, and industry-wide impact.

Claude Code/2026-04-12Beginner

CLAUDE.md Not Working? A Complete Troubleshooting Guide for Claude Code

Claude Code ignoring your CLAUDE.md settings? This guide covers the most common causes — wrong file location, formatting issues, conflicting configs, and more — with clear fixes for each.

Claude Code/2026-04-12Advanced

Claude Code × Swift/iOS Production Guide — From Xcode Integration to App Store Launch

A practical guide to building production-quality iOS apps with Claude Code and Xcode. Covers CLAUDE.md design, SwiftUI implementation, Clean Architecture, automated testing, Fastlane CI/CD, and App Store submission.

Claude AI/2026-04-11Intermediate

What 'Claude Powerup' Actually Means — Choosing Between Pro, Max, and the API

'Claude Powerup' isn't an official feature—it's a community term. Drawing on years of running automated publishing across several sites, here's how to choose between Pro, Max, and the API, and how to live with usage limits honestly.

Claude AI/2026-04-11Intermediate

The Mastering Claude's Custom Instructions

Master the design, implementation, and optimization of Claude's custom instructions to unlock AI's full potential. From fundamentals to production-ready strategies.

Claude AI/2026-04-11Advanced

Claude MCP × Agent Workflows: Designing and Building Real-World Automation Systems

A practical guide to designing and building automation workflows by combining Model Context Protocol (MCP) with Claude agents — from architecture design to implementation and production deployment.