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Keepsake Project Management, Freelancers, DesignersClaude Code alternatives: terminal agents, AI editors and open-source options
The closest Claude Code alternatives are other terminal coding agents: OpenAI Codex, GitHub Copilot CLI, OpenCode and Google’s Antigravity CLI. If you prefer an editor, Cursor, Devin Desktop (formerly Windsurf) and the open-source Cline extension offer agents inside the IDE. Free or low-cost starting points exist for most of them. Which fits depends on whether you want a different model, a lower price, an open-source tool or a different place to work.
Why look for a Claude Code alternative?
Claude Code is a strong product, and plenty of people stay with it. The usual reasons to look elsewhere are specific, so name yours before you compare tools.
- Cost or limits. Claude Code needs a paid Claude plan, from USD 20 a month, and it shares a five-hour and a weekly limit with the Claude apps. If you hit those limits, see Claude Pro vs Max before switching, because paying for usage credits or a higher tier may be cheaper than changing your workflow.
- A different model. Claude Code uses Claude models. If you want OpenAI, Google or open-weight models, you need a tool that supports them.
- An editor, not a terminal. Some people want the files open beside the agent.
- Open source. If you want to read or change the tool itself, a few alternatives publish their source.
- Company rules. An employer may already pay for GitHub Copilot, Google Cloud or ChatGPT seats.
Every fact below was read from the vendor’s own pages in October 2026. This is a fair list of real tools, in no ranked order. It does not cover browser-based app builders such as Lovable or Bolt.new; those are in the Claude Code vs Cursor vs Lovable comparison.
Which terminal coding agents are alternatives to Claude Code?
These work the way Claude Code does: you give a task in a terminal, the agent reads and edits your project, and you review the changes.
01 OpenAI Codex
OpenAI’s coding agent, available in a CLI, an IDE extension, the web, a desktop app and mobile, included in ChatGPT plans.
- Where you use it
- Codex CLI, IDE extension, Codex cloud on the web, the ChatGPT desktop and mobile apps
- Pricing
- Included in ChatGPT Free (USD 0), Go (USD 8 a month), Plus (USD 20 a month) and Pro (from USD 100 a month); Business seats are USD 20 per user a month billed annually
- Models
- OpenAI models; Free and Go list GPT-6 Luna in the desktop app, and Plus lists GPT-6.1 Sol and GPT-6 Luna
- Good for
- People who already pay for ChatGPT and want an agent with a cloud mode
OpenAI’s Codex pricing page says Codex is included in ChatGPT Free, Go, Plus, Pro, Business, Edu and Enterprise plans, and that ChatGPT Work and Codex share usage. Plus lists cloud integrations such as automatic code review and Slack. You can also use Codex with an API key and pay API prices, which suits automation in CI but leaves out the cloud-based features. The head-to-head is in Claude Code vs Codex.
02 GitHub Copilot CLI
GitHub’s terminal agent, started with the copilot command, on every Copilot plan including Free.
- Where you use it
- Terminal on Linux, macOS and Windows (PowerShell and WSL); Copilot also runs in editors and on github.com
- Pricing
- Copilot Free USD 0; Pro USD 10 a month; Pro+ USD 39 a month; Max USD 100 a month. Usage is metered in GitHub AI Credits
- Models
- Models from Anthropic, OpenAI, Google, xAI and others, depending on plan
- Good for
- Teams on GitHub, and anyone who wants Claude models without a Claude plan
GitHub’s documentation says you start an interactive session with copilot, pass one-shot prompts with -p, and press Shift+Tab to enter a plan mode that builds a structured plan before any code is written. Plans and credit allowances are on GitHub’s plans page. Copilot also adds unlimited inline completions on paid plans. See Claude Code vs Copilot.
03 OpenCode
An open-source coding agent for the terminal, desktop and IDE that connects to models from many providers.
- Where you use it
- Terminal interface, desktop app, IDE extension
- Price
- The tool is free and MIT licensed; model costs depend on the provider you connect
- Models
- 75+ providers through Models.dev, including local models, and a set of free models
- Good for
- People who want an open-source tool and freedom to switch models
OpenCode’s site says it ships free models you can use without an account and that you can connect providers such as OpenAI, Anthropic and xAI, or local models. It lists multi-session support for running agents in parallel on one project, and logins that reuse a GitHub Copilot or ChatGPT Plus or Pro account. Its data page notes that your information is stored only when you use its free models. Check the terms of any subscription you plan to route through a third-party tool. A comparison is planned in OpenCode vs Claude Code.
04 Antigravity CLI (and Gemini CLI)
Google’s terminal agent for Antigravity, with a free individual plan; Gemini CLI now serves Google Cloud organizations.
- Command
agyfor Antigravity CLI;geminifor Gemini CLI- Pricing
- A free individual plan (USD 0 a month) with basic weekly limits; Google AI Pro and Ultra for more; Google Cloud routes for organizations
- Models
- A variety of agent models, per Google’s pricing page
- Good for
- Trying a terminal agent for free, or teams on Google Cloud
Google ended free individual use of Gemini CLI on June 18, 2026 and moved those users to Antigravity CLI. Gemini CLI remains for organizations with Gemini Code Assist Standard or Enterprise licenses. The full story is in Claude Code vs Gemini CLI, and the details come from Google’s announcement.
Visit Antigravity CLI (and Gemini CLI) (antigravity.google) →
Which AI editors and extensions are alternatives?
These put the agent inside an editor, so you read code and review diffs without leaving the window. Claude Code itself also runs in VS Code and JetBrains, so this is a question of which product you want, not whether you can use an editor.
01 Cursor
A coding agent delivered as a desktop app, CLI and cloud agents, now sold as part of The X Subscription after SpaceX acquired Cursor.
- Where you use it
- Desktop editor, CLI, cloud agents, Slack and other integrations
- Pricing
- Free; Plus USD 8 a month; Premium USD 30; Super USD 100; Ultra USD 200 (all a month). Teams from USD 30 per user
- Models
- Cursor’s own models (Grok and Composer) are in the included pool; Claude, GPT and Gemini are billed at API list price from Premium upward
- Good for
- Developers who want an AI-first editor and a mature agent product
Cursor’s plan structure changed in 2026. Third-party models, including Claude, are not part of the included usage, which makes Cursor a different cost model from a flat Claude plan. The details are in Cursor vs Windsurf and in Cursor’s models and pricing documentation. For other options in this group, see Cursor alternatives.
02 Devin Desktop (formerly Windsurf)
Cognition’s IDE, renamed from Windsurf on June 2, 2026, with an agent manager, a local agent and a terminal CLI.
- Where you use it
- Desktop IDE for Mac, Windows and Linux, Devin CLI, Windsurf plugin for JetBrains
- Pricing
- Free; Pro USD 20 a month; Max USD 200 a month; Teams USD 80 a month plus USD 40 per full seat
- Models
- Pro lists frontier models from OpenAI, Claude, Gemini and SpaceXAI plus open-source models
- Good for
- Running several agents, local and cloud, from one board
It supports the Agent Client Protocol, and Cognition’s announcement lists Codex, Claude Agent and OpenCode among the agents that run inside it. See the announcement of the rename for what changed.
03 Cline
An open-source coding agent that runs as an extension in VS Code, JetBrains, Cursor and Windsurf, with a CLI and a desktop app.
- Where you use it
- IDE extensions, CLI installed with npm i -g cline, a desktop app, and an SDK
- Price
- The tool is open source; you pay your model provider. The site also lists a ClinePass offering, which this page does not price
- Models
- Claude, GPT, Gemini, local models through Ollama or LM Studio, or any OpenAI-compatible endpoint
- Good for
- Bringing your own API key and approving each step
Cline’s site describes a plan mode for agreeing a strategy and an act mode that executes it, with approval at each step or an auto-approve switch. Edits come with diffs, checkpoints and one-click undo. Because it is a bring-your-own-model tool, costs follow your provider’s API pricing, not a subscription.
How do the alternatives compare in one table?
| Tool | Where you work | Cheapest way in | Models | Open source |
|---|---|---|---|---|
| Claude Code | Terminal, IDE, desktop, web, mobile | Claude Pro, USD 20 a month | Claude | Not described as such |
| OpenAI Codex | CLI, IDE, web, desktop, mobile | ChatGPT Free, USD 0 | OpenAI | Not verified here |
| GitHub Copilot CLI | Terminal; Copilot also in editors | Copilot Free, USD 0 | Several vendors | Not described as such |
| OpenCode | Terminal, desktop, IDE | Free; free models included | 75+ providers | Yes, MIT |
| Antigravity CLI | Terminal; Antigravity app and IDE | Individual plan, USD 0 | Google’s choice of agent models | Not described as such |
| Cursor | Desktop editor, CLI, cloud | Free, then Plus at USD 8 a month | Cursor’s own; others at API price | Not described as such |
| Devin Desktop | Desktop IDE, CLI, cloud | Free, then Pro at USD 20 a month | Several vendors | Not described as such |
| Cline | IDE extensions, CLI, desktop | Free tool, bring your own key | Any provider | Yes |
“Not described as such” means the vendor’s official pages do not say it is open source. It is not a claim that it is closed. Read each project’s licence before adopting it.
How do you choose between them?
- Decide where you want to work. Terminal agents: Claude Code, Codex, Copilot CLI, OpenCode, Antigravity CLI. Editors: Cursor, Devin Desktop, or Cline in VS Code.
- Decide how you want to pay. A flat subscription gives predictability. Bring-your-own-key tools such as Cline and OpenCode charge by use, so a runaway session costs money. Set a spending cap.
- Check your existing subscriptions. A ChatGPT plan includes Codex. A GitHub account has Copilot Free. A Claude plan includes Claude Code. Start with what you already pay for.
- Run the same small job in two tools on separate git branches. A leftover bug or a small utility is enough; the board has a few in the developer tools category, such as which env var changed between the deploy that worked and the one that didn’t, posted on the board.
- Keep your instructions portable. Put project rules in AGENTS.md. Anthropic’s docs say Claude Code can read AGENTS.md in place of CLAUDE.md, and Devin Desktop reads it too.
# AGENTS.md ## Commands - Install: <command> - Run: <command> - Test: <command> - Lint: <command> ## Rules - Change only what the task asks for. - Run the tests and the linter before saying a task is done. - Never edit files under <generated or vendored folder>. - Ask before adding a dependency. ## Architecture notes - <two or three lines: where the main code lives, how data flows> ## Definition of done - Tests pass, no new lint errors, and a summary of every file changed.
If you do not yet have a project, the ideas on the board each come with a generated build prompt you can paste into any of these tools.
Frequently asked questions
What is the best free alternative to Claude Code?
There is no single best. Free options as of October 2026 include Antigravity CLI’s Individual plan, GitHub Copilot Free with its CLI, ChatGPT Free with Codex, OpenCode with its bundled free models, and open-source Cline with your own API key. Each has limits, and Claude Code itself is not in the free Claude plan.
Is there an open-source alternative to Claude Code?
Yes. OpenCode is MIT licensed and runs in a terminal, desktop app or IDE. Cline is open source and runs as an IDE extension, CLI and desktop app. Both let you choose your model provider. Gemini CLI is also Apache 2.0 licensed, though Google now limits it to organizations with Code Assist licenses.
Can I use Claude models without Claude Code?
Yes. GitHub Copilot lists Claude models among those available on its plans. Cursor offers them at API list price from its Premium tier, Devin Desktop Pro lists Claude among its models, and OpenCode and Cline can connect to Anthropic with an API key. Billing differs: some use credits, some use API prices.
Is Cursor better than Claude Code?
It depends on how you like to work. Cursor is a desktop editor with an agent, a CLI and cloud agents. Claude Code is a coding agent that runs in a terminal, IDEs, a desktop app and the web. Many developers use both. Cursor’s current plans for new customers do not include third-party models like Claude, which are billed at API prices.
What is the cheapest way to try a Claude Code alternative?
Use a free plan. Copilot Free, ChatGPT Free with Codex and Antigravity’s Individual plan cost USD 0, and OpenCode is free software with free models included. Cursor’s Plus plan is the cheapest paid tier of the editors at USD 8 a month, but it covers only Cursor’s own models.
Post your build ideas publishes this comparison and lists itself first. Facts about other products were checked on their own websites on the date shown above; prices and features change, so confirm on their sites before you decide. About the publisher.