Burp Suite Professional combines hands-on investigation with automated scanning. ZAP gives you a free, open-source proxy and scanner that you can build into your own testing workflows. The choice depends on whether you want to direct investigations or operate repeatable scanning. For teams seeking a completed assessment rather than another toolkit, Aikido's AI pentesting adds a third option: code-informed attack testing with independently reproduced findings. This comparison focuses on Professional and ZAP, distinguishing Burp Community and Burp DAST where relevant.
This comparison uses published product documentation, not a hands-on accuracy benchmark. ZAP is now an independent project, rather than an OWASP project.
TL;DR
- Choose Burp Suite Professional when your testers want direct control over requests, payloads, and investigations, supported by an integrated scanner.
- Choose ZAP when a free scanner matters and your team can maintain authentication, scan plans, and result triage.
- Consider Aikido when you want application-aware logic testing, validated findings, and fix retesting within one assessment workflow.
Burp Suite vs ZAP vs Aikido at a glance
The table compares approaches to testing web applications and APIs, not three identical products. The Aikido column refers to its paid AI Pentesting product, not its routine DAST scanner. The Burp Suite alternatives guide explains the different testing models; the Aikido vs Burp Suite comparison covers the direct product alternative.
Manual testing: who directs the investigation?
Burp is the stronger fit when the person at the keyboard is driving the assessment. Its proxy, Repeater, Intruder, and Scanner let a tester move between inspecting traffic, changing requests, and running automated checks. The value is control over how an investigation develops, not a promise that pressing Scan will complete a pentest.
Burp Community and Professional should not be treated as interchangeable. Community includes manual tools but omits Burp Scanner and throttles Intruder. Professional adds automated scanning and the unrestricted attack tooling relevant to this comparison.
ZAP also supports interactive testing. Its Requester, Fuzzer, proxy, and scripting facilities mean it is not simply a free tool that runs unattended scans. However, its tools have a different workflow, and familiarity with Burp extensions does not transfer automatically. Evaluate the particular techniques your testers use rather than counting equivalent feature names.
Burp is also no longer adequately described as a manual-only option. Burp AT, currently in public beta for Professional users, plans and executes tasks using Burp tools and project context. Its working context includes captured traffic, issues, and earlier discoveries, with configurable approval boundaries.
The trade-off is therefore how you want to control testing, not whether you want AI. Choose Burp for direct investigation and agent-assisted work inside that toolkit. Choose ZAP when its open-source tooling fits the workflow you are prepared to operate. Aikido is relevant when you want to delegate the assessment while retaining control of scope and access.
Authentication and logic: reach the right workflows
A scanner reaching the login page is not the same as testing the application. Before comparing findings, check that each tool can reach the protected workflows and user roles that matter.
Burp supports application credentials and recorded login sequences. Its AI features can also help generate recorded logins. ZAP provides authentication auto-detection, browser-based login, and recorded client scripts. It would be inaccurate to claim that ZAP always requires hand-written authentication scripts.
The more important distinction appears after login: who tells the tool what access should be allowed?
Burp's access-control testing workflow gives testers tools to investigate privilege escalation, cross-user access, and insecure direct object references. ZAP's Access Control Testing add-on compares access across users, but you configure the users, authorization checks, and expected access rules.
For familiar endpoints with explicit permissions, those workflows can work well. For unusual business rules, the team still needs to supply the expectations and investigate behavior. ZAP's own active-scanning documentation warns against relying on general scan rules to cover logical vulnerabilities.
Illustrative evaluation: use two test accounts from different customer organizations. Check whether each tool reaches the same protected features and whether the assessment verifies that one account cannot access the other's private records. This is a proposed evaluation, not a claim about measured product performance.
Aikido's white-box approach is useful here because connected code provides additional evidence about intended application behavior. Its advantage is not merely authenticating successfully; it is using that context to plan and validate the subsequent tests.
Automation and evidence: what must your team maintain?
ZAP is flexible automation infrastructure, but your team owns how it is operated. Its Automation Framework uses a YAML plan to define environments, authentication, crawling, scanning, reporting, and exit conditions. It also supports API-definition imports and tests that check whether jobs behaved as expected.
That flexibility is valuable when you want security checks under version control. It also means assigning ownership for runners, scan scope, credentials, and broken plans. A successful CI job should not be mistaken for proof that an authenticated application was fully tested.
For scheduled, centrally managed scanning across applications, compare ZAP with Burp Suite DAST, not just the desktop Professional license. DAST is a separate product with portfolio scanning and development-pipeline integration. Buying Professional seats does not automatically buy that deployment model.
Reporting alone is not a useful differentiator. Burp supports scan reports, and ZAP has a Report Generation add-on. The useful question is what evidence sits behind each reported issue and what happens when developers say they have fixed it.
Burp's Explore Issue can autonomously investigate Scanner findings and attempt exploitation. Therefore, exploit investigation is not exclusive to Aikido. Aikido's more specific distinction is that separate validation agents reproduce findings as part of the assessment before they appear in its report.
For a pilot, ask for a finding with reproducible evidence, its stated impact, and the retest result after a fix. Those artifacts are more useful for judging the workflow than the number of alerts generated.
Pricing, packaging, and operating effort
A scanner license and an application assessment buy different things. Do not compare their sticker prices as though they include the same work.
PortSwigger lists Professional at $499 per user; its purchase form specifies subscriptions and individual-user licensing. Burp DAST requires a separate quote. ZAP has no software license fee. Aikido lists a typical white-box pentest at $4,000 for one application and its primary APIs, with rightsized assessments quoted separately.
For an internal team, compare the work remaining after purchase: authentication maintenance, application-specific test design, investigation, reporting, and fix verification. ZAP can minimize license spending without eliminating that work. Burp equips the testers doing it. Aikido charges for an automated assessment workflow that performs more of those steps within the pentest itself.
Before approving a budget, confirm the scope, retest window, AI usage terms, and any additional network or deployment requirements. Aikido's published typical price includes retesting initial findings for up to six months, while black-box and grey-box assessments cost more. This is a scope comparison, not a claim that Aikido is the lowest-cost scanner.
When Aikido is a better fit than Burp or ZAP
Aikido is the stronger choice when the requirement is a code-informed web or API pentest with reproduced findings, rather than a proxy for hands-on experimentation. Two parts of that workflow make the case.
Investigate logic flaws using the application's own code
In white-box mode, Aikido uses repositories and API specifications to inform tests against the running application. This gives its agents context about routes, roles, and workflow assumptions, rather than asking them to infer everything from visible requests.
Burp AT works with Burp's accumulated project context; ZAP's access-control add-on tests against rules you configure. Aikido offers a more direct fit when you want source context incorporated into an autonomous assessment, rather than maintaining all the application-specific test logic yourself.
There is a concrete example in Aikido's published pentesting demo: the agents identified an access-control flaw that exposed private notes through an API. That demonstrates the kind of behavior this approach investigates. It is not a head-to-head benchmark or proof that Burp and ZAP could not find the same flaw.
Take a finding through validation and fix retesting
Aikido's validation workflow uses separate agents to reproduce suspected vulnerabilities. Reported findings include impact, reproduction steps, and remediation guidance. The same assessment supports retesting after developers make changes.
In the published demo, Aikido also generated a pull request for a command-injection fix and offered a retest. AutoFix applies to supported findings with the required access, not every possible vulnerability.
Burp and ZAP can support evidence gathering and retesting too. Aikido's advantage is the connected sequence: investigation, independent reproduction, a documented finding, and verification of the repair. That is specialist depth inside web application testing, not an argument about having more scanners.
An interactive proxy remains preferable for testers who want to craft every request and explore protocol edge cases directly. Aikido can complement that work rather than forcing the team to abandon it.
Burp Suite vs ZAP: which should you choose?
Choose Burp Professional when you want to direct the investigation with dedicated pentesting tools. Choose ZAP when free, customizable scanning is the priority and someone owns its operation.
Choose Aikido when the requirement is to investigate application logic with code context and deliver findings that have been reproduced and can be retested. Its case rests on how the pentest works, not on replacing every tool in your security stack.
Start an Aikido AI pentest on one application with a defined scope, representative test accounts, and the relevant repository. Evaluate the evidence and fix-verification workflow before expanding coverage.
