compare
Aider vs Codex CLI
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Aider | Codex CLI |
|---|---|---|
| Language | Python | Rust |
| Licence | Apache-2.0 | Apache-2.0 |
| Stars | 49k | 128k |
| Latest | v0.86.0 | rust-v0.160.1 |
| Last push | 2026-05-22 | 2026-10-06 |
| Release cadence | about 26 days between releases | too few releases |
| Active contributors | 0 commit authors on the default branch in the last 90 days | 91+ commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace Claude Code. Alternatives to Claude Code →
PartialAiderPair programming in the terminal that commits each edit to git, and runs commands only when asked.
Full replacementCodex CLIOpenAI's terminal agent, open source and built around OpenAI models.
Both replace GitHub Copilot. Alternatives to GitHub Copilot →
PartialAiderAn agent that works on the whole repository, without completions as you type.
PartialCodex CLIAn agent that works on the whole repository, without completions as you type.
Aider
Codex CLI
- rust-v0.161.0-alpha.13.12026-10-060.161.0-alpha.13.1pre-release
- rust-v0.162.0-alpha.162026-10-050.162.0-alpha.16pre-release
- rust-v0.160.12026-10-050.160.1
- rust-v0.162.0-alpha.152026-10-050.162.0-alpha.15pre-release
- rust-v0.162.0-alpha.142026-10-050.162.0-alpha.14pre-release
Aider
unsigned The latest release, v0.86.0, carries no signature GitHub could verify.
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Codex CLI
unsigned The latest release, rust-v0.160.1, carries no signature GitHub could verify.
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