Log in
Devin
Devin
VS
Jules
Jules

Devin vs Jules — Which AI Agent Is Better?

An in-depth comparison of Devin and Jules 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
Devin
Jules
Category
Coding Agent
Coding Agent
Pricing
$20/mo entry + usage (ACUs)
Free tier / Google AI plans
Open Source
No
No
Best For
Teams that want to delegate well-scoped engineering tickets end-to-end
Developers who want to queue up fixes and features and review PRs later
Key Features
Fully autonomous ticket-to-PR workflow, Own cloud dev environment + browser, Parallel sessions
Async task → tested PR workflow, Cloud VMs, no local setup, GitHub integration

Verdict: Devin or Jules?

Updated 2026-07-04

Choose Devin if you are teams that want to delegate well-scoped engineering tickets end-to-end. Choose Jules if you are developers who want to queue up fixes and features and review PRs later.

Editorially this matchup is a dead heat: each agent leads in 2 of our six categories. On price, Devin runs $20/mo entry + usage (acus) and is proprietary; Jules runs free tier / google ai plans and is proprietary.

In-Depth Comparison

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.

Jules Overview

Jules is Google's asynchronous coding agent, powered by Gemini. Unlike interactive agents, you assign it tasks — bug fixes, dependency bumps, small features — and it clones your repo into a cloud VM, writes and tests the change, and comes back with a pull request and an audio changelog summary. The free tier makes it an easy add to any workflow, but the async model means it suits queued, well-defined tasks rather than tight pair-programming loops, and turnaround depends on task queue and complexity.

Score Breakdown

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

Features

Devin
  • Fully autonomous ticket-to-PR workflow
  • Own cloud dev environment + browser
  • Parallel sessions
  • Slack / Linear / GitHub integration
  • Machine snapshots & playbooks
  • Interactive planning mode
Jules
  • Async task → tested PR workflow
  • Cloud VMs, no local setup
  • GitHub integration
  • Parallel task execution
  • Audio changelog summaries
  • Generous free tier

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.

Get My API Key
No credit card required · Free tier included

Related Comparisons

Claude CodeVSDevinClaude CodeVSJulesDevinVSHermesHermesVSJulesCodexVSDevinCodexVSJulesDevinVSGemini CLIGemini CLIVSJules