Using Extended Thinking with Claude Code in 2026: A
A practical guide to using Claude 4's Extended Thinking feature with the Claude Code CLI and API. Learn how to set thinking budgets, handle streaming, and use it where it actually helps in production.
When Extended Thinking 'Does Not Work': 7 Causes That Hide Behind the Same Symptom
When you turn on Extended Thinking but the response feels identical to before, the cause is usually one of seven distinct problems. This guide walks through how to diagnose each from the API, the chat UI, the SDK, and the model layer.
Gemma 4's Thinking Mode vs. Claude Extended Thinking: What's Actually Different
Gemma 4 introduced internal reasoning that generates 4,000+ tokens before answering. Here's how it compares to Claude Extended Thinking, what makes them different, and when to choose each.
Claude Opus 4.6 Extended Thinking Production Patterns — Controlled Reasoning
Master production-grade patterns for Claude Opus 4.6's Extended Thinking: budget_tokens design, cost optimization, error handling, streaming integration, and reasoning chain verification.