Aider alternatives in 2026: is Aider dead, and what to use instead

Is Aider dead?

Not officially. The repository isn't archived and nobody has announced an end. But by every public signal it's barely maintained:

• Last tagged GitHub release: v0.86.0, August 9, 2025. The last package on PyPI, aider-chat 0.86.2, was uploaded on February 12, 2026.
• Last commit to the main branch: May 22, 2026, a merge that added newer Claude model names.
• About 1,960 open issues and pull requests.
• In January 2026 a user opened an issue asking about Aider's future. One reply calls it essentially a one-person project that has slowed down; the maintainer hasn't answered there.
• The README still says Aider works best with Claude 3.7 Sonnet, DeepSeek R1, o3-mini and GPT-4o.

Quick picks

• Aider, but still updated: cecli, a community fork of Aider.
• The most popular open-source terminal agent, any model: OpenCode, MIT, about 226,000 stars.
• Aider's minimal spirit: Pi, a small harness you extend yourself, MIT, about 121,000 stars.
• Local models first, like many Aider users ran it: Nanocoder, with Ollama.
• Aider's watch mode, where you ask for changes in code comments: Cline or Kilo Code inside VS Code and JetBrains.
• You pay for ChatGPT or Claude anyway: Codex CLI or Claude Code.
• An agent that works through a backlog on a schedule, not only when you type: Crewmark, on top of Claude Code or Codex.

Aider alternatives compared

Stars are rounded, from the GitHub API on November 10, 2026; “last commit” is the newest commit on the main branch that day.

Open source Aider alternatives you can install today

Each installs with one command. Read a script before you pipe it to your shell.

1. cecli, the Aider fork

   cecli started as a fork of Aider in August 2025 and is still updated. It describes itself as a CLI agent built for extensibility and customization, installs as the cecli command on macOS, Linux and Windows, and is also on PyPI as cecli-dev.

   # cecli, a community fork of Aider
   curl -LsSf https://cecli.dev/install.sh | sh
   
   # OpenCode
   curl -fsSL https://opencode.ai/v2/install | bash
   
   # Pi
   curl -fsSL https://pi.dev/install.sh | sh
   
   # Nanocoder (local models through Ollama)
   npm install -g @nanocollective/nanocoder
   
   # Codex CLI
   npm install -g @openai/codex

2. OpenCode

   The closest to Aider in reach: open source, a terminal first, and any of 200+ model providers including local ones. It adds a read-only Plan agent next to the full-access Build agent, subagents and a desktop app in beta.

3. Pi and Nanocoder

   Pi keeps the core small and skips sub-agents and plan mode on purpose; you add what you need with extensions and skills. Nanocoder is built by a not-for-profit collective for local models through Ollama, with plan and architect modes, the latter familiar to Aider users.

Source: each project's README on GitHub

Moving from Aider to another agent

1. Carry your conventions file across

   Aider reads coding conventions from a file you load with --read. OpenCode and Codex read AGENTS.md at the root of the repository, and Claude Code reads CLAUDE.md, which can import AGENTS.md. See AGENTS.md for Codex and CLAUDE.md.

   # Aider loaded your conventions with --read
   aider --read CONVENTIONS.md
   
   # OpenCode and Codex read AGENTS.md at the repository root
   mv CONVENTIONS.md AGENTS.md
   
   # Claude Code reads CLAUDE.md; import the same file there
   echo "@AGENTS.md" >> CLAUDE.md

2. Decide how you want commits

   Aider commits every change with a generated message. Claude Code, Codex and OpenCode leave commits to you by default, so ask for a commit when a change is done, or write your commit rule into AGENTS.md.

3. Bring your models

   If you ran Aider on DeepSeek or a local model, OpenCode, Crush, Nanocoder and Pi all take your own keys, and the first three talk to Ollama. See Claude Code with DeepSeek for the other way round.

Aider vs OpenCode, Claude Code, Pi and Cline

• Aider vs OpenCode: both are open source and model-agnostic. OpenCode gets more than 100 commits a week and adds agents, subagents, MCP and a desktop app; Aider is simpler and commits for you.
• Aider vs Claude Code: Claude Code is closed source and runs Anthropic's models, included from Claude Pro at $20 a month; it gets new Claude features first. Aider is free and works with any model.
• Aider vs Pi: both are deliberately small. Pi is actively developed, with an SDK, RPC mode and a package system for extensions.
• Aider vs Cline: Cline lives mostly in your editor, with a CLI too; Aider is terminal-first, with a watch mode for editor comments.
• Aider vs Codex: Codex CLI is open source and written in Rust, included in every ChatGPT plan; it runs OpenAI's models.

From pair programmer to teammate with a backlog

Aider and every tool here wait for your next message. Crewmark turns your own Claude Code or Codex into an AI employee with a role, a goal in numbers, working hours and a heartbeat: during its shift it wakes, takes the next issue from a board, commits and opens a pull request, and messages you when it needs a decision.

1. Hire an employee on your agent

   Run the setup command in a Claude Code or Codex conversation; that conversation becomes the employee. See the AI software engineer.

2. Give it hours and a heartbeat

   It wakes every 15 to 240 minutes during the hours you set. See how to run Claude Code 24/7.

3. Compare the rest

   For more terminal agents, see OpenCode alternatives; for editors, Cursor alternatives.

FAQ