The Problem

Why Your Terminal Choice Matters for Aider

Aider is a command-line AI pair programming tool. Unlike IDE-based AI assistants, Aider runs directly in your terminal — which means your terminal is your Aider interface. The quality of your terminal directly affects how you experience multi-turn conversations, streaming code output, and the constant stream of git diffs that Aider produces.

Most terminal emulators were not designed for the output patterns that Aider creates. Here are the pain points Aider users hit with traditional terminals:

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Streaming Token Lag

Aider streams tokens from the LLM in real time. Slow terminals create visible lag between when tokens arrive and when they render, breaking your flow as you watch code being written.

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Git Diff Overload

Aider auto-commits every change to git. After a long session you may have dozens of commits to review. Without a built-in diff viewer, raw git diff output is hard to parse quickly.

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Long Conversation Scrollback

Multi-turn Aider sessions produce hundreds of lines of conversation. You need smooth, fast scrollback to revisit earlier context without the terminal stuttering or freezing.

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Configuration Tax

Setting up iTerm2 with a decent prompt, syntax highlighting, and a diff viewer takes hours of dotfile work. That is time you could spend actually coding with Aider.

The Solution

How arb Makes Aider Better

arb is a GPU-accelerated macOS terminal purpose-built for AI coding workflows. It ships a 40MB binary with everything you need — no plugins, no dotfile configuration, no package managers. Run Aider inside arb and immediately benefit from faster rendering, better diffs, and a fully-equipped shell environment.

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Smooth Token Streaming

Metal-backed GPU rendering means Aider’s streamed tokens appear instantly without lag. No dropped frames, no rendering delays, even during long code generation sequences.

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Built-in Delta for Diffs

Aider auto-commits constantly. arb’s built-in Delta turns every git diff and git log -p into syntax-highlighted, line-numbered output you can actually read at speed.

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Starship Shows Git State

Aider changes your git state with every auto-commit. arb’s built-in Starship prompt shows the current branch, commit count, and dirty state so you always know where you are.

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Zero Configuration

No .zshrc tweaks, no plugin managers, no font downloads. arb includes JetBrains Mono, a dark theme, syntax highlighting, autosuggestions, and completions from the first launch.

The Aider + arb Workflow

Here is how experienced Aider users work with arb:

  1. Open arb, navigate with z — Launch arb and type z myproject to jump to your project directory instantly. Starship shows your branch and Node/Python version.
  2. Start Aider — Run aider in arb. The GPU-accelerated renderer handles Aider’s streaming token output smoothly, even for long code blocks.
  3. Review auto-committed diffs — After Aider makes changes, open a split pane and run git diff HEAD~1. Delta renders syntax-highlighted diffs with line numbers automatically.
  4. Run tests with /run — Use Aider’s /run pytest command. Test output renders at full GPU speed in arb, no matter how large the suite.
  5. Add files with /add — When you need to add more context, use /add src/auth.py. arb’s tab completions autocomplete file paths, speeding up the /add workflow.

Why Aider Users Specifically Benefit from GPU Rendering

Aider’s output pattern is unique among AI coding tools. It streams tokens one at a time from the LLM, interleaved with search/replace blocks and git operations. This creates a high-frequency, small-batch rendering workload that exposes terminal performance bottlenecks. Traditional terminals like Terminal.app and iTerm2 use CPU-based rendering that introduces visible lag during token streaming. arb’s Metal-backed GPU rendering eliminates this lag entirely.

arb vs iTerm2 for Aider Users

iTerm2 requires extensive manual setup to reach baseline productivity with Aider. You need to install a Nerd Font for Starship, configure a shell prompt, install Delta for readable diffs, set up zoxide for directory jumping, and tweak color schemes. arb ships all of these built-in. For Aider users who want to start coding immediately after brew install, arb eliminates the setup tax entirely.

arb vs Warp for Aider Users

Warp is a modern terminal with its own AI features, but it requires an account, collects telemetry, and is not open source. Aider users who value privacy — already choosing a local-first, open-source AI tool — often want their terminal to match those values. arb is MIT-licensed, requires no login, collects zero telemetry, and ships with more built-in dev tools than Warp.

arb vs Ghostty for Aider Users

Ghostty is a fast, GPU-accelerated terminal but ships as a blank shell. You still need to install and configure Starship, Delta, syntax highlighting, and autosuggestions separately. arb matches Ghostty’s rendering performance while including all these tools out of the box — a significant advantage for Aider users who want a productive environment immediately.

FAQ

Frequently Asked Questions

arb is the best terminal for Aider on macOS. It is GPU-accelerated for smooth token streaming, boots in under 100ms, and includes Starship, Delta, z, syntax highlighting, and autosuggestions out of the box. Install with brew tap szj2ys/arb && brew install arb and run Aider inside it.
Yes. Aider streams tokens from the LLM in real time, creating a high-frequency rendering workload. GPU-accelerated terminals like arb render each token instantly without the lag that CPU-based terminals introduce. This makes the Aider experience noticeably smoother, especially during long code generation.
Install arb with brew tap szj2ys/arb && brew install arb, open it, and run aider. That is it. arb’s built-in tools (Delta for diffs, Starship for git status, z for navigation) enhance your Aider workflow automatically. No configuration needed.
Yes. arb is MIT-licensed and fully open source. No account required, no telemetry, no tracking. You can inspect, fork, and contribute on GitHub.
Yes. Aider auto-commits every change to git. In arb, every git diff, git log -p, and git show command is automatically rendered with Delta’s syntax highlighting, line numbers, and color-coded additions/deletions. No configuration needed — Delta is built into arb.