How to Try Devin AI for Free

Official Devin pricing lists Free at $0 per month with a light quota to code with agents, while Pro starts at $20 per month for individual paid usage. That $20 step is the real decision point for most developers. The product does not force you into a short countdown trial first. It puts you on Free with limited usage so you can evaluate Devin AI free access before you buy.

That framing matters because many pages only say "free or paid." They skip the workflow that actually burns Free quota: connecting a repo, indexing it, configuring Devin's cloud environment, planning in Ask mode, then sending a scoped Agent task. A Devin AI free trial experience, in practice, is the Free plan path at app.devin.ai plus a first successful session on code you care about.

Cognition's self-serve billing docs describe four self-serve plans you can start from the app: Free, Pro ($20/month), Max ($200/month), and Teams ($80/month minimum). Free is for individuals trying Devin. Pro and Max are single-user paid plans. Teams is the multi-member self-serve option. Enterprise is custom and separate from the Free evaluation path this article covers.

If you only need to know whether Devin understands your codebase and can open a reviewable change, Free is enough for a first pass. If you already know you will run Devin daily with frontier models and higher quotas, plan for Pro or above after the evaluation, not during the first hour of signup.

Treat Free as a product sample with hard edges, not as a full personal seat.

Free ($0/month)

Per Devin's pricing page and self-serve billing docs, Free includes:

• Limited Devin usage (light quota)
• Limited model availability
• Unlimited inline edits and unlimited Tab completions (as listed on pricing)
• Access to Devin Review
• Access to DeepWiki
• One member on the account

Free users can upgrade any time from Settings > Plans in the app.

Pro ($20/month)

Pro is the entry individual paid plan. Official docs describe Pro as a single-developer subscription with a daily and weekly usage quota across Devin sessions, Devin CLI, and Devin Desktop. It also supports pay-as-you-go on-demand credits after the included quota, plus integrations documented on the Pro plan (including MCP). Pro cannot invite additional members.

Max and Teams (when Free is no longer enough)

Max is $200/month for individuals who outgrow Pro's weekly quota. Teams starts at $80/month minimum, supports unlimited members, and uses full seats at $40/month each plus optional flex seats that draw from shared on-demand credits. You do not need Teams for a personal Free evaluation.

What Free is good for Use Free to answer product questions, not to run a multi-week migration:

• Does Ask mode map your architecture with cited answers?
• Can DeepWiki give you a usable map of a connected repo?
• Can Agent mode complete a small, testable task and open a PR?
• How much steering do you need mid-session?

When the quota is too tight, or you need full model availability and higher concurrent work, Pro is the usual next step at $20/month.

The transactional path for try Devin free access is short if you keep the scope personal and the repo ready.

1. Create an account at app.devin.ai

Start at app.devin.ai (signup also appears from devin.ai/pricing). Complete authentication with the method Cognition presents in the product. After login, confirm you are on the Free plan under Settings > Plans. If the UI offers paid plans during onboarding, choose Free unless you already know you need Pro.

2. Connect your source control

Official environment docs say non-enterprise users should open Settings > Connections and connect GitHub, GitLab, Bitbucket, or Azure DevOps, then select which repositories Devin may access. Repos will not show up for environment setup until that connection exists.

Practical tip: connect a non-production repo or a throwaway fork first if company policy is strict. You can index the real monorepo after legal and security review.

3. Confirm plan limits before you burn quota

Free has limited agent usage. Do not start with "rebuild the payment service." Save the first session for a three-hour-or-less task with clear success criteria. Cognition's first-run guidance uses that same rule of thumb for task sizing.

4. Optional CLI for terminal-first users

If you prefer the terminal, official first-run docs document Devin CLI install:

curl -fsSL https://cli.devin.ai/install.sh | bash

Use Cognition's CLI docs for auth and local workflows. Free evaluation still depends on the same repo access and environment foundation as the web app.

Official first-run docs are blunt: before your first real session, index repositories and set up Devin's environment. Skipping either step is the most common reason a free session feels random.

Indexing (code understanding)

Indexing enables Ask Devin and DeepWiki. It is separate from environment configuration. Per Cognition's index guide:

1. Open app.devin.ai and log into your organization
2. Go to Settings, then the Repositories tab
3. Click Index repo on the repository you want
4. Select the branch or branches Devin should analyze
5. Wait until indexing finishes (minutes for small repos, longer for large trees)

Index the branches your team actually develops on. Stale default branches produce stale plans.

Environment (Devin's "laptop")

Devin's environment is the Linux VM where sessions boot: repos cloned, tools installed, dependencies resolved, config applied. Cognition saves that setup as a snapshot. Every new session boots a clean copy of the snapshot. Session changes do not write back to the snapshot unless you update the environment configuration.

Two supported setup styles:

• Declarative blueprints (recommended): YAML-defined installs and project knowledge, version controlled and auto-building
• Classic configuration: interactive web wizard with embedded terminal steps for secrets, dependencies, lint, test, and run

For a Free evaluation, classic setup is often faster on a single repo. For a durable team setup later, blueprints scale better. Either way, the goal is the same: Devin should be able to install deps, run tests, and verify work without you babysitting every package install.

Minimum environment checklist for Free

• Connected SCM and correct repos selected
• Package manager and runtime versions that match the repo
• Test command you will ask Devin to run
• Secrets only if the first task needs them (prefer a task that does not)
• Branch convention Devin should use for PRs

Cognition calls environment configuration the single highest-impact setup step for effectiveness. On Free, that same prep also protects your limited quota. A broken environment wastes sessions on dependency loops instead of product evaluation.

Keep free Devin session notes where teammates can search them

Store Ask plans, Agent summaries, and review notes in a shared workspace with Intelligence Mode, version history, and MCP access over Streamable HTTP at /mcp. Every Fast.io org starts with a 14-day free trial.

Start 14-Day Trial

Official first-run guidance recommends starting in Ask mode unless the task is already fully scoped, then moving to Agent mode to execute. That Ask-then-Agent path is the featured-snippet flow for a useful Devin free plan evaluation.

Step A: Open Ask mode

From the main session UI, toggle to Ask and select the indexed repository. Ask mode explores the codebase and plans work without changing production code. Use it to:

• Ask how a module works and get cited answers from advanced code search
• Scope a task into a concrete plan and a context-rich Agent prompt

You can also enter Ask from a DeepWiki page for a repo-scoped question.

Example Ask prompts for Free quota:

How does authentication work in this repo?
Point me to the entry middleware, token validation, and test coverage.

Plan a small change to add a /users/stats endpoint that returns user count.
List files to touch, tests to update, and risks.

Step B: Build a Devin prompt and send to Agent

When the plan is good enough, construct a Devin prompt from the Ask session and click Send to Devin (or start Agent mode from the main page if the task is already tight). Agent mode can write code, run commands, browse docs, and open pull requests.

When starting Agent, configure:

• Repository so Devin edits and opens PRs against the right tree
• Agent type: default Devin for general work, Fast Mode for quick well-scoped tasks, Dana for data-analysis style work

Prefer a task Cognition itself uses as a first-time example: new endpoint with tests, small frontend control reusing existing styles, unit tests for a known service, or a single-file TypeScript migration with compile and test checks.

Step C: Scope the Agent prompt tightly

Free usage is limited. Write completion criteria Devin can check:

Create endpoint /users/stats that returns user count and average signup age.

Use the existing users table. Mirror response structure from /orders/stats
in statsController.js. Cover the new endpoint in StatsController.test.js.
Run the relevant test suite and report the command and result.

Use @ mentions for files, repos, playbooks, skills, secrets, or prior sessions when the UI offers them. Ambiguity burns Free quota.

Step D: Review the PR, not just the chat

A free evaluation fails if you only read the conversation. Check:

• Diff size and whether the change stayed in scope
• Tests run or CI status
• PR description quality
• How much human cleanup remains

Pause or steer mid-session if Devin loops on the same error. Mid-session agent toggles are supported in the product UI for the next message.

Step E: Decide upgrade vs stay Free

Stay on Free if you only need occasional light sessions, Review, or DeepWiki. Upgrade to Pro at $20/month when you need higher quotas, full model availability, and regular individual use. Move to Max or Teams only after Pro is too small or you need multi-member billing.

A Free Devin session produces more than a PR. You get plans, Ask notes, test logs, screenshots, and review comments that disappear into chat history if nobody saves them. Git is the right home for code. It is a weak home for mixed evaluation artifacts and cross-functional handoffs.

Many teams dump those extras on local disks, object storage such as Amazon S3, or general file products like Google Drive or Dropbox. Those options store bytes. They get awkward when an agent and a human need the same folder, semantic search across notes and exports, permission boundaries, and a clean ownership path after the trial week.

For that coordination layer, an intelligent workspace such as Fast.io sits beside Devin rather than inside it. Fast.io is not a built-in Devin AI feature. Use it when free-session output needs to become shared team memory:

• Shared org-owned workspaces so agents and humans open the same evaluation folder
• Per-file version history when concurrent writes need an auditable trail
• Intelligence Mode for auto-indexing and RAG-style questions with citations
• Metadata Views at /product/document-data-extraction/ when you extract structured fields from PDFs, images, or review docs instead of free-text search alone
• Branded shares (Send, Receive, Exchange) for durable or expiring access when product or security stakeholders need the write-up without a git client
• Ownership transfer so an agent-prepared workspace can move to a human owner
• Consolidated MCP tools over Streamable HTTP at /mcp (and legacy SSE at /sse) when other agents read or write the same workspace

A practical post-session pattern after try Devin free access:

1. Keep code in the PR and the repository
2. Save the Ask plan, Agent summary, and test notes into a shared workspace
3. Enable Intelligence Mode so teammates can ask what changed and why
4. Share a review folder instead of mailing zip files
5. Transfer ownership to the human who owns the evaluation when the agent finished setup

Fast.io plans start at Starter $29/mo, Business $99/mo, and Growth $299/mo. Every organization starts with a 14-day free trial that requires a credit card.