Choose an AI coding assistant by the work you can safely delegate, not by a demo that finishes a task without interruption. This comparison covers GitHub Copilot, Cursor, Claude Code, Devin and Cline using eight official pages checked on 17 October 2026. YNIX has not benchmarked their coding accuracy, speed, security or total cost on a shared task set. The table describes documented capabilities and buying checks, not independent performance results. These are official documentation links, not affiliate links.

Start with three decisions: where the agent runs, who can authorize its actions, and how its usage is billed. An editor assistant, a terminal agent and a cloud worker can overlap in features but differ in access to your files and credentials. Record your exact editor, operating system, repository host and required integrations before comparing plans. For a client or employer repository, confirm the approved account and policy before uploading context. A personal subscription is not automatically equivalent to an organization-managed seat.

GitHub Copilot is a candidate when your workflow centers on GitHub and a supported editor. Its plans page distinguishes editor agent mode from assigning work that creates a pull request, so verify the feature you need on your particular plan and surface. The current billing explanation uses GitHub AI Credits: one credit equals $0.01 USD, and usage varies with model and task complexity. Paid-plan code completions and next edit suggestions do not consume those credits. Unlimited completions therefore do not mean unlimited agent work. We deliberately avoid treating the page's variable flex allotments as a permanent entitlement.

For teams, Copilot review costs need an additional line in the budget. GitHub says reviews requested by unlicensed users on github.com can bill the organization in AI Credits when the required policies are enabled; this option is off by default and is not the same feature in an IDE. The page also says code review workflows consume GitHub Actions minutes from 1 June 2026. Include that possible second meter in your pilot rather than comparing seat prices alone. Confirm the actual allowance, additional-usage policy and billing dashboard for your organization.

Copilot privacy differs by account type. GitHub states that it does not use Copilot Business or Enterprise data to train its models. Its individual-plan explanation says interactions from Free, Pro and Pro+ users may be used for training unless they opt out in account settings. Do not extend that statement to every unnamed plan or infer that no data is retained. Retention, training and operational processing are different questions. Check the applicable product terms and account controls for the code you intend to use; this guide does not make a legal or compliance determination.

Cursor is a candidate if you want an agent-focused editor workflow and are willing to evaluate the move from your current setup. Its current pricing page lists Free, Plus, Premium, Super and Ultra individual tiers, alongside Teams and Enterprise. The FAQ says Plus offers Grok models only; Premium and higher make third-party models available in Cursor, but without an included third-party-model allowance. Do not choose a tier solely by its usage multiplier if your required model is billed separately. Test required extensions, language tooling and repository workflow before committing a team. Team-wide privacy settings and centralized administration are listed for Teams; Enterprise adds repository, model and MCP access controls, network controls and audit logs. These are tier-specific capabilities, not Individual-plan guarantees.

Cursor now describes a pool of AI usage shared with Grok that refreshes weekly. Usage varies by product; reaching the allowance means waiting for the refresh or buying a top-off. Third-party model usage in Cursor is separate, charged at API list price, and spending caps are available. Paid-plan Grok API access is another distinct meter: API usage is billed separately at standard model rates and does not draw from the shared plan pool. Do not add these together as one prepaid allowance. Displayed prices exclude applicable taxes. Cursor also says that enabled privacy mode prevents code data from being used for training by Cursor or its model providers. This conditional training promise is not proof of local-only processing or zero retention; check the effective setting and other data terms.

Claude Code is a candidate for repository work in a terminal, but the official overview also documents IDE, desktop and browser surfaces. It is not accurately described as terminal-only. Most surfaces require a Claude subscription or Anthropic Console account, while the terminal CLI, VS Code and JetBrains also support third-party providers. The cost documentation distinguishes subscription usage from API token billing: the local session dollar estimate is intended for API users and is not the subscription invoice. Use the authoritative billing page for your account, and do not turn a vendor's average enterprise spending figure into your own cost forecast.

Claude Code's permission mode matters as much as its model. The documented Manual mode asks for file changes and most shell commands, but in-workspace file reads and some read-only commands do not require approval. The acceptEdits mode automatically permits file edits and common filesystem commands within its documented directory scope. Auto mode uses a classifier for actions instead of routine human prompts. The docs distinguish deny, ask and allow rules, in that order, and say prompt instructions do not change the enforced permissions. Inspect the effective configuration; a sentence asking the model to be careful is not an access restriction. Avoid treating bypass mode as a normal production setup.

For Claude Code procurement, inspect extensions to the permission system as well as the visible mode. The current documentation says ordinary PreToolUse hook approvals do not override matching deny or ask rules. Installed mods that handle tool.check have different precedence and can replace some decisions; do not assume a hook and a mod are equivalent. In plan mode, their approval cannot authorize a file edit or another non-read-only call, apart from the documented ExitPlanMode exception for hooks. Add installed hooks, mods and managed policy to the pilot inventory, then verify the exact permitted actions with harmless fixtures before connecting a client repository. We have not independently tested these controls.

Devin now needs a broader comparison than cloud delegation alone. The current pricing page includes Devin Desktop and CLI alongside access to Devin Cloud. Paid-plan usage allowances refresh daily and weekly, and extra usage can be purchased at API pricing. The team offer lists an $80 monthly team-plan charge plus $40 per month per full developer seat. As an illustration, three full seats would mean $200 per month in those listed fixed charges, before any extra usage or applicable taxes; that is arithmetic from the listed structure, not a checkout quote. Confirm seat types and billing terms. Unlimited Tab completions are not unlimited cloud-agent work.

On 17 October 2026, Devin's pricing page still displays free SWE-2 use in Desktop and CLI through 16 October 2026. That stated end date has now passed; the unchanged page is not evidence of an extension. We have not verified an extension or the entitlement inside a paid account. The page does not specify an expiry hour or time zone, so this observation does not establish the precise technical cutoff. Do not treat the temporary benefit as available for a new purchase, applicable to Cloud, or guaranteed for your subscription term. Budget without it and verify the actual account entitlement before a paid workload. Unlimited Tab completions and the paid agent allowance are separate benefits.

For a purchase after the stated promotion date, separate four amounts in your worksheet: ordinary subscription fee, full-seat charges, included agent allowance and extra usage. Enter zero assumed promotional allowance until your account explicitly confirms otherwise. Record the execution surface (Desktop, CLI or Cloud), chosen model, billing period and displayed entitlement. Before an automated task, inspect its billing path and any available usage cap; an expired public offer is not a spending limit. Existing customers should check renewal and billing screens rather than assuming new-customer pricing changes their contract. This is a buying checklist, not a paid-account test or a promise that every provider offers the same controls.

Cline is no longer well described as only a VS Code extension with a provider key. Its overview lists desktop, CLI, VS Code, JetBrains and SDK paths, plus built-in usage billing, ClinePass and bring-your-own-key access to cloud providers or local runtimes. Pick the application and billing path together. A local interface does not establish local model processing, and an open-source application does not make a hosted model free. We do not repeat the page's model-value multiplier as a measured saving because no common workload was tested here.

Cline's overview emphasizes approval, but its dedicated Auto Approve documentation qualifies that headline. Settings can permit file reads, edits, commands, browser use or MCP actions without a prompt. The documentation says the model marks commands as safe or approval-required rather than using a fixed command allowlist; that label is not an independent security guarantee. Options for all files extend access outside the workspace when their base toggle is enabled. YOLO mode automatically approves actions broadly. Review these controls before testing, especially if you assumed every action always required a click.

Use the same small pilot for each serious candidate. Choose a non-sensitive repository and one bug fix, one test addition and one explanation task with written acceptance criteria. Record the account tier, model, usage before and after, elapsed time, human correction time, rejected changes and tests actually run. Inspect dependencies and the final diff, including unrelated edits. Keep production credentials out of the pilot, use a disposable branch or worktree, and verify the available rollback path. This is a proposed evaluation method, not a claim that YNIX has already performed those tests.

Make the purchase only when your worksheet answers six questions: does the exact editor and platform fit; which actions can run without you; which data settings apply; what is the included allowance; which extra meters can charge; and how much review is needed to accept the result? Shortlist Copilot for GitHub-centered work, Cursor for its editor workflow, Claude Code for repository and shell workflows, Devin for evaluating desktop and cloud delegation together, and Cline for its application and model-access choices. These are conditional starting points, not a universal winner or a promise of replacing code review. Recheck the linked sources and final checkout terms when you subscribe.