Devin ACU Cost: What Each Task Really Costs
Devin does not bill by seat — it bills by ACU (Agent Compute Unit), where 1 ACU ≈ 15 minutes of Devin's active autonomous work. A small, well-scoped task usually costs under 1 ACU (~$2); a medium feature $5–15; a large or vaguely specified task can burn 5–10+ ACUs and still fail to produce a mergeable PR. The $20 Core plan is only the entry fee — the bill is decided by how tightly you scope the work.
AICoding score
Quick Verdict
8.4 / 10 — The most autonomous coding agent, but precision costs ACUs and patience.
Devin is the closest thing to delegating work to a remote junior engineer who never sleeps — give it a spec, walk away, come back to a finished PR. Its whole-feature autonomy is genuinely impressive. But it is not a daily editor: small changes are slow, accuracy on tricky code lags interactive tools, there is no plugin ecosystem, and ACU billing makes costs unpredictable. Use Devin for whole-feature offloading, not for flow coding.
Use Devin if…
- You want to offload whole features and walk away
- You build complete modules from a written spec
- You run batches of well-scoped tasks (tests, migrations, bug fixes)
- You have budget for ACU-based usage
Skip Devin if…
- You need fast small edits (cloud warm-up is slow)
- You want precision bug-fixing on tricky code
- You want offline/local or air-gapped operation
- You need a plugin ecosystem or pair-programming
What Your ACUs Actually Buy
End-to-End Autonomy
Devin plans, codes, tests, iterates, and opens a pull request on its own. In a test, it built a React dashboard end-to-end in 23 minutes with zero human intervention, and delivered a finished PR for an API feature including tests.
SWE 1.7 Model
Cognition's own coding model (based on Kimi K2.7), released July 2026. This lets Devin handle the full GitHub-issue-to-PR loop natively, reducing reliance on OpenAI/Anthropic models.
Persistent Context
Devin keeps cross-session memory of the codebase and task context, so it understands the project state across multiple interactions rather than starting fresh each time.
Parallel Cloud Agents
Run multiple Devin agents in parallel (Team tier) to work on several tasks simultaneously — effectively scaling a "virtual team" across your backlog.
Devin Security Swarm
Enterprise security scanning: automatically finds code vulnerabilities, dependency risks, and generates fixes. Positions Devin beyond coding into security automation.
Clean PR Output
Every task ends in a well-described pull request, ready for human review. Devin also runs tests and generates screenshots of results for verification.
Pricing
The new entry point (96% cheaper than the old $500). Includes a limited ACU allowance for individual developers; buy more ACUs when you run out.
- $20/mo (down from $500)
- ACU-based usage
- Individual developer
- Cloud sandbox
For engineering teams running parallel agents and scheduled tasks at scale. Includes 250 ACUs and team collaboration features.
- 250 ACUs included
- Parallel cloud agents
- Scheduled automation
- Team workspace
Custom pricing with SSO, audit logs, compliance, and dedicated support for regulated organizations.
- SSO + audit logs
- Compliance controls
- Dedicated support
- Custom ACU plans
When your included ACUs run out, top up at ~$2.25 each on Core or ~$2.00 each on Team. 1 ACU ≈ 15 minutes of Devin's active autonomous work.
- Pay for active work only
- 1 ACU ≈ 15 min of work
- Batch small tasks to save
- Set a hard spend cap
* ACU consumption scales with task complexity — batch small, well-scoped tasks to control cost. Core ACU top-ups are ~$2.25 each; Team includes 250 ACUs at ~$2.00 each. Prices verified September 11, 2026.
Devin ACU Cost Per Task
| Task / Plan | Usage | Typical cost | What to watch |
|---|---|---|---|
| Small, well-scoped task | Bug fix, small endpoint, single test file | under 1 ACU (~$2) | The most cost-effective way to use Devin — feed it a queue of these and review the PRs. |
| Medium feature | Follows existing patterns in the codebase | a few ACUs ($5-15) | Give it an existing module to imitate; Devin is much cheaper when it does not have to invent structure. |
| Large or vague task | Unclear spec, big refactor, new architecture | 5-10+ ACUs | Risk case: Devin can iterate in the wrong direction, keep billing, and still not deliver a mergeable PR. |
| Core plan | $20/mo + metered usage | from $20/mo | ACU overage is ~$2.25 each — set a spend cap before you start. |
| Team plan | 250 ACUs included, unlimited concurrency | $500/mo (~$2.00/ACU) | Cheaper per ACU than Core overage, and the plan to pick if you run agents in parallel. |
| Idle time | Waiting for your reply or review | $0 | Only active autonomous work is metered — Devin does not bill wall-clock time while it waits on you. |
* ACU-per-task figures come from Cognition's own ACU definition (1 ACU ≈ 15 minutes of active work) plus third-party usage reports (Carly pricing analysis, July 2026). They are estimates, not invoices — always watch the ACU meter and set a hard spend cap.
Devin Deals & Ways to Cut ACU Spend
Devin has no coupon codes — the real savings come from scoping tasks and picking the right plan.
Devin vs The Field
Devin vs Cursor
Autonomous offload vs interactive driverCursor is an AI-assisted IDE ($20/mo) where you drive: autocomplete, Composer, agent mode, but you stay in control. Devin is a fully autonomous cloud agent — hand it a task, walk away, get a PR. In tests, Devin built whole features end-to-end but had lower bug-fix accuracy (78% vs 85%) and slower small edits. Cursor wins for daily flow and precision; Devin wins for whole-feature offloading.
Different jobs-to-be-doneDevin vs Windsurf / Devin Desktop
Cloud autonomy vs IDE assistantWindsurf became Devin Desktop after Cognition's acquisition. Devin Desktop is an IDE-style assistant (editor, autocomplete, Cascade) with a free tier. Autonomous cloud Devin is the separate, paid agent. If you want editor flow, Devin Desktop/Cursor; if you want hands-off whole-feature delivery, cloud Devin.
Complementary productsDevin vs OpenHands
Cloud SaaS vs open-source localOpenHands is a free, MIT-licensed, self-hostable autonomous agent — you control data and costs, run it locally, no ACU meter. Devin is a polished SaaS with SWE 1.7 and enterprise support but cloud-only and ACU-billed. Privacy-sensitive or cost-conscious teams lean OpenHands; teams wanting managed autonomy and security features choose Devin.
Devin for managed, OpenHands for controlDevin vs Aider
Autonomous cloud vs terminal CLIAider is a free terminal CLI that pairs with you on Git-native work, editing files and committing — model-agnostic and $0 tool cost. Devin is a cloud agent that works alone and delivers PRs. Aider suits terminal devs who want control and low cost; Devin suits teams who want to delegate whole tasks.
Aider for control & costWho Devin Is Best For
Whole-feature building
Hand Devin a spec and get a complete, tested feature with a PR. Best for well-defined modules where requirements are clear.
Automated testing
Devin writes and runs test suites, adds coverage, and iterates on failures — offloading a tedious but well-scoped task.
Bug fixes (batch)
Feed a backlog of well-scoped bug reports and let Devin produce fixes and PRs for review.
Code migrations & dep updates
Dependency upgrades, framework migrations, and large mechanical refactors across a codebase — clear scope, high repetition.
Security scanning
Devin Security Swarm finds vulnerabilities and dependency risks and generates fixes for enterprise codebases.
Prototyping from scratch
From idea to runnable code with minimal input — the fastest path to an MVP or full-stack prototype.
Get Started Without Burning ACUs
Sign up
Create an account at devin.ai and choose the Core ($20/mo) or Team plan. No free tier for the cloud agent.
Connect your repo
Link your GitHub/GitLab repository. Devin reads the codebase and builds persistent context for your tasks.
Describe a task
Create a task in natural language: "add a REST API with JWT auth and tests." Devin plans, codes, and iterates autonomously.
Let it work (or go parallel)
Devin runs in a cloud sandbox. On Team, launch multiple parallel agents across your backlog.
Review the PR
Devin opens a well-described pull request. Review, request changes, or merge. Watch your ACU usage to control cost.
FAQ
What is Devin?
Devin is the AI software engineer from Cognition Labs — a fully autonomous coding agent that works in a cloud sandbox. You describe a task in natural language, and Devin plans, codes, tests, iterates, and opens a pull request on its own, without step-by-step human guidance. It runs on Cognition's own SWE 1.7 model.
How much does Devin cost in 2026?
Devin Core is $20/mo plus ACU (AI Compute Unit) usage; Team is $500/mo and includes 250 ACUs. Extra ACUs cost roughly $2.25 each on Core and ~$2.00 each on Team. The old $500 entry point is gone — Core at $20 is a 96% price cut. But ACU billing means the real bill depends on how complex your tasks are, not on how many seats you buy.
Is there a free tier for Devin?
No free tier for cloud Devin. It is paid from $20/mo. (Devin Desktop — the rebranded Windsurf — keeps its own separate free tier for IDE-style coding, but that is a different product from the autonomous cloud Devin.)
Is Devin better than Cursor or Windsurf?
They solve different problems. Devin is a fully autonomous cloud agent — you hand it a task and it delivers a finished PR. Cursor and Windsurf are AI-assisted editors where you stay in the driver's seat. In tests, Devin completed whole features end-to-end with no human input, but had lower bug-fix accuracy (78% vs Cursor's 85%) and is slower for small changes. Use Devin for whole-feature work, Cursor/Windsurf for daily flow.
How does Devin pricing (ACU) work?
Devin bills by ACU (AI Compute Unit): 1 ACU is roughly 15 minutes of Devin's active autonomous work — planning, coding, running tests — and time it spends idle waiting for your reply is not billed. A small well-scoped task usually costs under 1 ACU (~$2 or less); a medium feature several ACUs (~$5-15); a large or vague task 5-10+ ACUs and may still fail to produce a mergeable PR.
Why is my Devin bill higher than expected?
Almost always because of task scoping, not seat count. Vague or exploratory requests make Devin iterate in the wrong direction while every iteration keeps burning ACUs — and you may still end up without a mergeable pull request. Keep tasks small and well-specified, watch the ACU meter during a run, and stop early if the plan drifts.
How can I reduce Devin ACU costs?
Four levers: (1) write tight, unambiguous specs so Devin does not have to explore; (2) batch many small tasks instead of one huge one; (3) use Team if you run at volume — its included ACUs work out near $2.00 each versus $2.25 on Core; (4) keep fast small edits and ambiguous architecture work in an IDE, where a human drives and you do not pay per minute of compute.
What is Devin Desktop?
Devin Desktop is the rebranded Windsurf (Cognition acquired Windsurf in June 2026). It is a separate, IDE-style AI coding assistant — not the autonomous cloud agent. So "Devin" today refers to two things: the autonomous cloud engineer (devin.ai) and Devin Desktop (ex-Windsurf, an editor). They are different products with different pricing.
Can Devin work offline or locally?
No. The autonomous cloud Devin is cloud-only and requires an internet connection. Your code and context live in Cognition's cloud, which raises privacy considerations — there is no offline "privacy mode" because Devin needs persistent context to work. If you need local or air-gapped autonomy, open-source agents like OpenHands or Aider are better fits.
What are Devin's main limitations?
The main limitations: (1) accuracy can be uneven — on ambiguous or legacy-code tasks you may do significant manual fixes; (2) small changes are slow due to cloud "warm-up" latency; (3) no plugin ecosystem; (4) no pair-programming — you cannot intervene mid-task; (5) cloud-only with privacy trade-offs; (6) ACU cost can add up on complex tasks.
What is Devin best used for?
Devin shines on well-scoped, modular, end-to-end tasks: building a complete feature or module from a spec, writing tests, fixing bugs, code migrations, and dependency updates. It is especially useful when you want to offload work and walk away, then review a finished PR.
How accurate is Devin at fixing bugs?
In published third-party tests, Devin's bug-fix accuracy was around 78%, lower than Cursor (85%) and Windsurf (82%). It excels at autonomous whole-feature delivery, but for precision bug-fixing on tricky code, interactive tools were more accurate. Treat Devin's output as a strong first draft that still needs review.