Aider vs Sourcegraph Cody: How They Actually Differ
Pick Aider if you live in the terminal, want open-source with bring-your-own-key, and like every change becoming a git commit. Pick Sourcegraph Cody if your bottleneck is searching a large monorepo or you need a self-hosted AI assistant with IDE plugins.
Compiled 2026-10-20 from our catalogue entries for Aider and Sourcegraph Cody.
The short answer
- Pick Aider if
- You want a free, open-source (Apache 2.0), terminal-only agent that brings your own key from OpenAI, Anthropic, Gemini, DeepSeek, or a local Ollama model, and you want every accepted change auto-committed to git.
- Pick Sourcegraph Cody if
- You work in VS Code, JetBrains, or the web, sit on a large monorepo that needs semantic, regex, and structural search, or you need a self-hosted Enterprise option that keeps source code on your own infrastructure.
- Cheapest way in
- Aider is listed as Free with no recorded plans. Sourcegraph Cody is freemium with the starting price not recorded on file; at scale its pricing shifts from per-seat to an enterprise contract.
- What we could not compare
- Verified plan details and monthly/annual prices for both products, Sourcegraph Cody's starting price, public-repo availability for Cody, and official documentation links for either product are not on file.
Aider and Sourcegraph Cody both sit in the AI Coding Agents category, but they are built around different starting points. Aider is a free, open-source (Apache 2.0) command-line agent that pair-programs in your terminal and writes every accepted change to git with a generated commit message. Sourcegraph Cody is Sourcegraph's code-search and AI assistant, designed to answer questions and offer inline coding help against large codebases, with extensions for VS Code, JetBrains, and the web.
The trade-off is where each tool starts. Aider's value is openness and version-control discipline: you bring your own key across OpenAI, Anthropic, Gemini, DeepSeek, or a local Ollama model, and you stay in the terminal. Cody's value is search-grounded answers: it indexes very large monorepos for semantic, regex, and structural search, then feeds that context to the model to reduce hallucinations on internal APIs, and offers a self-hosted Enterprise deployment for code that must stay on customer infrastructure. Choose based on whether your pain is staying in flow with git, or finding and reasoning over a big private codebase.
Side by side
Every cell is a field on our catalogue entry for that tool, copied as recorded. Rows where the two differ come first; blank fields say so rather than being filled in.
| Aider | Sourcegraph Cody | |
|---|---|---|
| Pricing model | Free | Freemium |
| Starts at | Free | Not recorded |
| Runs on | mac, win, linux, cli | vscode-ext, jetbrains-plugin, web |
| Public source code | Yes — public repo | No public repo listed |
| Category | AI Coding Agents | AI Coding Agents |
| Public docs | Not listed | Not listed |
- Public source code: From the repository link on each catalogue entry, not a licence audit.
Where Aider is the better fit
- Fully open source under Apache 2.0 with no vendor lock-in.
- Bring-your-own-key across OpenAI, Anthropic, Gemini, DeepSeek, and local Ollama models.
- Every accepted change is committed to git with a generated message.
Where Sourcegraph Cody is the better fit
- Indexes very large monorepos for semantic, regex, and structural search.
- Self-hosted Enterprise option keeps source code on customer infrastructure.
- Combines code-search context with LLM answers, reducing hallucinations on internal APIs.
Which one should you pick?
It is free and open source, works on mac, Windows, and Linux via the CLI, supports bring-your-own-key across several major model providers plus local Ollama, and turns every accepted edit into a git commit.
It ships as VS Code and JetBrains extensions and a web app, and grounds LLM answers in indexed code search across your monorepo.
Its self-hosted Enterprise option keeps source code on customer infrastructure and it indexes large monorepos for semantic, regex, and structural search.
Frequently asked questions
- Does Aider work inside an IDE like VS Code or JetBrains?
- Aider is command-line only and runs on mac, Windows, and Linux. It has no GUI or inline-edit overlay and no IDE extensions listed. Sourcegraph Cody, by contrast, ships as a VS Code extension, a JetBrains plugin, and a web app.
- Which models can I use with each tool?
- Aider supports bring-your-own-key for OpenAI, Anthropic, Gemini, DeepSeek, and local Ollama models. The model list for Sourcegraph Cody is not on file in our sheet.
- How does each tool handle git?
- Aider automatically commits every accepted change to git with a generated commit message. Sourcegraph Cody's git integration is not described on file.
- Which one fits a very large monorepo?
- Sourcegraph Cody is built around indexing very large monorepos for semantic, regex, and structural search and pairing that with LLM answers. Aider's monorepo capabilities are not described on file.
- Can I self-host either tool?
- Sourcegraph Cody offers a self-hosted Enterprise option that keeps source code on customer infrastructure, though the sheet notes setup and indexing are non-trivial. Aider is open source but a self-hosted description is not on file.
- How is each priced?
- Aider is listed as Free. Sourcegraph Cody is freemium with its starting price not recorded on file; the sheet notes pricing shifts from per-seat to an enterprise contract at scale.
What we compared
This page states nothing that is not in the two catalogue entries below. The exact text used to write it is reproduced here so you can check our reading, and both tools link through to their own pages and to the vendor.
- /tools/aider — checked 2026-05-25 · official site
- /tools/sourcegraph-cody — checked 2026-05-25 · official site
Show the source text
## Aider (/tools/aider) Tagline: Open-source CLI coding agent that pair-programs in your terminal and commits to git automatically. Category: AI Coding Agents Pricing model: free Starts at: Free Platforms: mac, win, linux, cli Public repo: https://github.com/Aider-AI/aider Docs: none listed Verified plans: none on file Strengths on file: Fully open source under Apache 2.0; no vendor lock-in.; Bring-your-own-key for OpenAI, Anthropic, Gemini, DeepSeek, and local Ollama models.; Every accepted change is committed to git with a generated message. Limits on file: No GUI — command-line only; no inline-edit overlay like Cursor.; Cost depends entirely on the underlying provider's token pricing. Aider is an open-source CLI coding agent that pair-programs in your terminal and commits each change to git automatically. Its edge is openness and git discipline: Apache-2.0 with no lock-in, bring-your-own-key across OpenAI, Anthropic, Gemini, DeepSeek, and local Ollama models, and every accepted change landing as a git commit with a generated message. It fits developers who live in the terminal and want a model-agnostic agent tied to version control. The trade-offs: there's no GUI or inline-edit overlay like Cursor's — it's command-line only — and cost tracks whatever provider's token pricing you bring. It's the open, BYOK terminal agent next to Anthropic's Claude Code and IDE-native Cursor. ## Sourcegraph Cody (/tools/sourcegraph-cody) Tagline: Code-search and AI assistant by Sourcegraph — semantic search across enterprise codebases plus inline coding help. Category: AI Coding Agents Pricing model: freemium Starts at: Not recorded Platforms: vscode-ext, jetbrains-plugin, web Public repo: none listed Docs: none listed Verified plans: none on file Strengths on file: Indexes very large monorepos for semantic, regex, and structural search.; Self-hosted Enterprise option keeps source code on customer infrastructure.; Combines code-search context with LLM answers, reducing hallucinations on internal APIs. Limits on file: Setup and indexing for self-hosted deployment is non-trivial.; Pricing shifts from per-seat to enterprise contract at scale. Sourcegraph Cody is a code-search and AI assistant from Sourcegraph — semantic search across large codebases paired with inline coding help. Its differentiator is search-grounded answers: it indexes very large monorepos for semantic, regex, and structural search and feeds that context to the model, which cuts hallucinations on internal APIs. A self-hosted Enterprise option keeps source on your own infrastructure. It fits enterprises with big codebases that want AI grounded in their own code and control over where it runs. Caveats: self-hosted setup and indexing are non-trivial, and pricing moves from per-seat to an enterprise contract at scale. It's the code-search-first assistant, where Copilot and Cursor lead with completion and editing.
Change log
- 2026-10-20 — First published, compiled from the catalogue entries for Aider and Sourcegraph Cody.