Every guide in one place

How to reduce Claude Code costs

Concrete ways to cut Claude Code token usage: prompt trimming, log stripping, document compression, and tool selection. Real numbers, no fluff.

Claude Code usage: what counts and how to get more from your plan

What burns Claude Code usage fastest, why limits hit sooner than expected, and how to stretch Pro, Max x5, or Max x20 without upgrading.

Claude Code usage limits and the 5-hour window

How the Claude Code 5-hour rolling window and weekly limits work, what each plan tier covers, and how to keep coding without upgrading.

Why is Claude Code so expensive?

Four reasons Claude Code burns through tokens fast: verbose tool output, repeated context, multi-step debugging, and large codebase reads. Plus how to fix each.

Reduce Claude API costs

Practical levers for cutting Claude API spend: prompt caching, model tier selection, output length, and batch API. Plus the Claude Code-specific shortcut.

Codex is now part of ChatGPT: what changed and what still works

OpenAI merged the Codex app into ChatGPT on July 9, 2026. What was renamed, what kept the Codex name (the CLI, ~/.codex), and what the merger broke.

How to reduce Codex costs

Concrete ways to cut OpenAI Codex token usage: prompt trimming, log stripping, document compression, and tool selection. Real numbers, no fluff.

Codex usage: what counts and how to get more from your plan

What burns OpenAI Codex usage fastest, why the 5-hour and weekly limits hit sooner than expected, and how to stretch Plus, Pro, or Business without upgrading.

Codex usage limits in 2026: the 5-hour window, the weekly cap, and what each plan gets

How Codex limits work now: the 5-hour window (back since July 30), the separate weekly cap, what Plus, Pro, and Business get, and how to check remaining usage.

ChatGPT coding usage limits: how the Codex windows work in the app

Coding in ChatGPT is token-metered on a 5-hour window plus a weekly cap, shared with the codex CLI but separate from chat. How to check and stretch both.

Why is Codex so expensive?

Four reasons OpenAI Codex burns through usage fast: verbose tool output, repeated context, multi-step debugging, and large codebase reads. Plus how to fix each.

How to reduce ChatGPT coding costs

Coding on a ChatGPT plan is token-metered. Four levers that cut the spend: local context compression, leaner agent output, quieter tool logs, usage windows.

What is Headroom?

Headroom is a menu bar app that reversibly compresses the tool output and boilerplate bloating your Claude Code and ChatGPT prompts, cutting noisy items ~50%.

How to install Headroom for Claude Code and ChatGPT

Two ways to run Headroom with Claude Code and ChatGPT: the open-source CLI or the one-click desktop app. Install steps, friction, and which to pick.

Is Headroom a Claude Code plugin or skill?

Headroom is not a Claude Code plugin; it is a local proxy that works on every session automatically. What that means, and which parts are installable skills.

Headroom vs Ponytail vs RTK: what's the difference?

Headroom, Ponytail, and RTK aren't competitors; they cut token cost on different sides of the bill and run together. What each does and when to use it.

Headroom vs RTK: what's the difference?

RTK rewrites noisy terminal commands into token-lean equivalents. Headroom compresses everything else before it reaches the model. Why you run both.

Headroom vs Caveman: what's the difference?

Both compress agent context reversibly through a local proxy. The real split: a finished desktop app for Claude Code and ChatGPT versus an open-source toolkit.

Caveman alternatives: what to use instead

Looking for a Caveman alternative for cutting Claude Code and ChatGPT token usage? The closest match is Headroom, plus the free and DIY options worth knowing.

Headroom for desktop vs Headroom CLI: what's the difference?

Two tools share the name Headroom: the open-source CLI that compresses agent context, and the desktop app built on it. How they relate and which to pick.

Changelog

A running log of what's shipped in Headroom: connectors, add-ons, savings layers, and platform support, newest first.

How to uninstall Headroom

How to fully uninstall the Headroom macOS app, Homebrew cask, and open-source CLI, plus the leftover files worth deleting.

Ponytail for Claude Code and ChatGPT: how to install and use the skill

Ponytail is a skill that makes Claude Code and ChatGPT write the least code that works. How to install it, verify it is on, and use the intensity levels.

Measurement · August 17, 2026

How to present token savings percentages honestly

One day of real agent traffic, scored three ways: 15%, 38%, or 87%. Which savings percentage means anything, and why cache reads stay out of the denominator.

Usage limits · July 6, 2026

Hit the Claude Code weekly limit by Wednesday? Here's what's eating it

Why heavy Claude Code users burn the weekly limit in two or three days (sub-agents, tool output, re-read files) and what to do this week.

Claude Code · July 2, 2026

Sub-agents are why your Claude Code weekly limit vanished

Sub-agents spin up fresh contexts that don't inherit the prompt cache, so multi-agent runs re-buy context. How the tax works and how to shrink it.

Codex · June 15, 2026

Codex now meters by tokens: why your ChatGPT plan drains faster

Since April 2026, ChatGPT Plus, Pro, and Business meter Codex by tokens instead of messages. What changed, who it hurts, and how to adapt without upgrading.