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Aider
Aider
VS
Devin
Devin

Aider vs Devin — Which AI Agent Is Better?

An in-depth comparison of Aider and Devin across output quality, autonomy, reliability, speed, value, and ease of use. Vote for your favorite.

Community Vote

Pick a winner in each category — you can change your vote anytime.

Output Quality
Writes correct, production-ready code and answers
Autonomy
Completes multi-step tasks end-to-end without hand-holding
Reliability
Consistent results — doesn't go off the rails or break
Speed
Fast responses and quick task turnaround
Value
What you get for what you pay
Ease of Use
From install to first useful result with minimal friction
Aider
Devin
Category
Coding Agent
Coding Agent
Pricing
Free (BYO API key)
$20/mo entry + usage (ACUs)
Open Source
Yes
No
Best For
Developers who want a flexible, BYO-model terminal coding tool
Teams that want to delegate well-scoped engineering tickets end-to-end
Key Features
Git-native workflows, Multi-file editing, Auto-commits with diffs
Fully autonomous ticket-to-PR workflow, Own cloud dev environment + browser, Parallel sessions

Verdict: Aider or Devin?

Updated 2026-07-04

Choose Aider if you are developers who want a flexible, BYO-model terminal coding tool. Choose Devin if you are teams that want to delegate well-scoped engineering tickets end-to-end.

In our editorial scoring, Aider leads in 4 of six categories (output quality, reliability, speed and value), while Devin leads in 2 (autonomy and ease of use). On price, Aider runs free (byo api key) and is open source; Devin runs $20/mo entry + usage (acus) and is proprietary.

Where Aider falls short
  • Terminal-only with a steeper learning curve than GUI tools
  • No inline completions — it's a conversational editor, not an autocomplete
Full Aider review →

In-Depth Comparison

Aider Overview

Aider is an open-source AI pair programming tool that works in your terminal. It can edit multiple files, understand your git history, create commits, and works with virtually any LLM via API. Known for its practical approach to real-world coding tasks and excellent benchmark scores.

Devin Overview

Devin is Cognition's fully autonomous software engineer: give it a task in Slack, Linear, or the web IDE and it plans, writes code, runs tests, and opens a pull request in its own cloud sandbox — including several sessions in parallel. It shines on well-scoped, repetitive engineering work (migrations, test coverage, small features) and improved markedly through its 2.x releases, but it remains weaker on ambiguous, novel tasks, and ACU-based usage pricing means heavy use costs real money. Cognition also acquired Windsurf in 2025, folding its IDE technology into the same product family.

Score Breakdown

Output Quality
9.0
vs
8.5
Autonomy
7.5
vs
9.5
Reliability
8.0
vs
7.0
Speed
7.5
vs
7.0
Value
9.0
vs
6.0
Ease of Use
7.0
vs
8.5

Features

Aider
  • Git-native workflows
  • Multi-file editing
  • Auto-commits with diffs
  • Any LLM support
  • Voice coding mode
  • Linting & testing integration
Devin
  • Fully autonomous ticket-to-PR workflow
  • Own cloud dev environment + browser
  • Parallel sessions
  • Slack / Linear / GitHub integration
  • Machine snapshots & playbooks
  • Interactive planning mode

Whichever you pick — run it on unlimited compute

Both work with any OpenAI-compatible provider. Point the base URL at Standard Compute and get unlimited frontier-model compute from $9/mo flat — no per-token billing, no 429 rate limits.

Aider setup guide →

Power any agent with unlimited tokens

Whichever AI agent you choose, Standard Compute gives you unlimited LLM compute at one flat monthly price. No rate limits, no per-token billing.

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