Harmonic

Spec sheet

Product

Harmonic describes itself as a native Mac IDE for building with multiple AI agents.Read 8 Oct 2026 · harmonic.build

Privacy

The pricing page states that users’ code never leaves their Mac.Read 8 Oct 2026 · harmonic.build

Agent access

Harmonic runs agent CLIs with users’ own plans and API keys; its license covers the app and does not include agent access.Read 8 Oct 2026 · harmonic.build

Free access

The Free plan requires no card or account, and can be used for as long as desired.Read 8 Oct 2026 · harmonic.build

GitHub

Harmonic supports connecting multiple GitHub accounts and choosing an account for each repository.Read 8 Oct 2026 · harmonic.build

Keyboard controls

A command palette supports keyboard-first actions such as switching tabs, opening repositories, and shipping work.Read 8 Oct 2026 · harmonic.build

Merge train

Users can queue finished tabs for merging into a base branch, review conflicts inline, and open PRs in one pass.Read 8 Oct 2026 · harmonic.build

Models

Users can select an agent and model per tab and switch agents mid-conversation on Pro.Read 8 Oct 2026 · harmonic.build

Parallel agents

Each tab can run Claude Code, Codex, or DeepSeek, with multiple agent sessions running side by side.Read 8 Oct 2026 · harmonic.build

Payments

Checkout and billing are handled by Dodo Payments, and Harmonic says it does not see or store card details.Read 8 Oct 2026 · harmonic.build

Requirements

The app requires macOS 11 or later and is a universal binary for Apple Silicon and Intel Macs.Read 8 Oct 2026 · harmonic.build

Worktree isolation

Harmonic gives each tab its own Git worktree on disk.Read 8 Oct 2026 · harmonic.build

Plans and prices

Every Harmonic plan and price →

Where Specifiction places it

• AI Code Editors#19 of 267.7