What Checksum is
Checksum calls its product a continuous quality platform that runs alongside CI/CD. As of September 2026, its agents work in a loop described in its documentation:
- Detect and generate. The E2E Agent maps your app, finds the user journeys worth testing and writes standard Playwright tests, each with a plain-language story file, and delivers them as pull requests.
- Run and heal. Tests run in CI on every commit. When a selector or flow changes, Checksum fixes the test and opens a pull request for review; its home page says about 70% of failures resolve this way without human involvement.
- Test APIs. The API Agent turns your API specs into journey-based API tests, written as standard Python with pytest, on the Enterprise plan.
Checksum sells this as Results as a Service: every test passes verification by Checksum's engineers before it reaches your repository, and a dedicated solutions engineer works with you on Slack. In August 2026 Checksum launched its Continuous Quality Loop, which generates and maintains tests as soon as a pull request opens, through GitHub, CI and an MCP server. Its platform page lists SOC 2 and ISO 27001, with a data processing agreement available.
Why teams look for a Checksum alternative
Checksum takes much of the effort out of owning an end-to-end suite. Teams look for a Checksum alternative when a suite, however well kept, is not what they are missing.
- A growing suite to review. New tests and heals arrive as pull requests, and Checksum's FAQ says most teams start by reviewing everything. The suite is yours, and so is the review.
- A heal needs a judgement. When the agent updates a test to match a changed flow, someone still decides whether that change was intended or a bug.
- Journeys are not the whole picture. End-to-end tests check the journeys and assertions someone chose to encode. Whether a release matches all your requirements and business rules is a wider question.
- Evidence for the release decision. Videos, screenshots and Playwright traces suit engineers. A product owner deciding whether to ship needs a plain account of what was checked, what failed, what is unclear and what was not covered.
In fairness, human verification, reviewable heals and a Proof of Value answer many usual worries about AI-written tests. The question is whether a maintained suite is what your release decision needs.
Checksum vs ShipperAG at a glance
Checksum builds and maintains a test suite that you keep; ShipperAG checks each release against your requirements. Here is how they compare as of September 2026.
| Aspect | Checksum | ShipperAG |
|---|---|---|
| Built for | Engineering and QA teams that want coverage without writing or maintaining tests | Product and engineering teams that need evidence to approve each release |
| Approach | AI agents detect user journeys, write Playwright tests and heal them as the app changes | AI QA specialists check each release against your requirements, design system and business rules |
| Who writes and maintains tests | Checksum's agents, with human engineers verifying each test; your team reviews pull requests | No suite to write: a coordinator picks the specialists each change needs, within your limits |
| How results are checked | Tests verified before delivery; a triage agent separates real bugs from flaky tests | An independent verifier re-runs every finding in a fresh session |
| Evidence and sign-off | Test runs with videos, screenshots and Playwright traces, plus a health dashboard | Verified, Issue found, Needs input and Not covered, sealed in an evidence ledger, plus a shareable report for sign-off |
| Browsers | Playwright, which Checksum describes as powering its cross-browser execution | Chromium only, with phone and tablet sizes by emulation. Firefox, Safari and real devices are not covered |
| Pricing model (as published) | By workflows maintained (50, 200 or 400+); no per-seat or per-run fees; prices not listed | From $149 a month, after a free 45-day trial |
| Availability | Available now: free 30-day trial and a Proof of Value before signing | Private pilot (waitlist) |
Want release evidence you can check alongside your Checksum coverage? Start with a free 45-day trial, no card.
Work email only. We keep your email, team size, plan choice and the page you joined from, only to contact you about the ShipperAG pilot. No spam.
Checksum pricing, as published
As of September 2026, the Checksum pricing page shows no prices. Checksum charges by the number of end-to-end workflows it maintains, not by seats or runs; every tier includes unlimited runs, auto-healing and users:
- Emerging: 50 workflows.
- Scaling: 200 workflows, adding custom style guides, parallel execution and integration with existing test infrastructure.
- Enterprise: 400 or more workflows, adding the API testing agent, a custom SLA and security review support.
A workflow is one end-to-end test of up to 30 actions. Each tier lists a free 30-day trial, and new customers go through a structured Proof of Value before signing. If Checksum pricing is why you are looking elsewhere, ShipperAG starts at $149 a month for 20 release checks, after a free 45-day trial.
Where ShipperAG is different
As a Checksum alternative, ShipperAG builds no suite: it checks each release against what your product is supposed to do, and the output is evidence, not test code. Here is how it works:
- Connect a preview or staging URL and add the context: requirements, the design system or brand tokens, business rules and API docs.
- The coordinator reads the change and picks the AI QA specialists it needs, within your limits: business rules, user journeys, accessibility, API contracts, security and more.
- Specialists run real checks: a real Chromium browser, HTTP and API calls, automated accessibility rules, and visual comparison against design tokens.
- The independent verifier re-runs every finding in a fresh session, and the results are sealed in a hash-chained evidence ledger.
- A person signs off, or shares the report with the stakeholders who approve the release.
Every item ends as Verified, Issue found, Needs input (the requirements were unclear, so it asks instead of guessing) or Not covered. A model's opinion alone never marks anything verified.
When Checksum is the better choice
Not every team needs a Checksum alternative. Checksum is the better fit when you want a maintained end-to-end suite without the maintenance work:
- Tests you own. You want standard Playwright tests in your repository that you can run anywhere and keep if you leave.
- Maintenance handed over. You want the vendor to own test upkeep, with human engineers verifying each test.
- Every commit gated. You want regression tests on each commit and pull request, with sharded runs to keep CI fast.
- API journeys. You need multi-step API tests that verify state across calls, not only status codes.
- Other browsers. Checksum describes Playwright as the engine behind its cross-browser test execution. ShipperAG checks in Chromium only; Firefox, Safari and real devices are not covered.
- You need to start now. Checksum is available today, with a trial or Proof of Value before you sign; ShipperAG is a private pilot.
The two can also sit side by side, a Checksum suite on every commit and ShipperAG on each release, as we explain in agentic QA vs test automation.
What ShipperAG does not do
ShipperAG is new, and it is not right for every job:
- It is not generally available or self-serve. It is a private pilot with a waitlist: teams start with a free 45-day trial with up to 20 release checks, and paid plans start at $149 a month.
- It runs in Chromium only, with phone and tablet sizes by emulation. Firefox and Safari (WebKit) rendering and real devices are not covered, and reports list them under Not covered. See browsers, engines and devices.
- It does not replace a maintained regression suite on a long-lived product. It is designed to run alongside one.
- It only tests targets you own or have written permission to test, inside the hosts you allow.
Other Checksum alternatives
ShipperAG is not the only Checksum alternative. Depending on the job, compare:
- QA Wolf is a hybrid platform and service: its AI turns prompts into Playwright and Appium tests, and its Coverage as a Service team can build and maintain the suite for you (QA Wolf pricing). See our QA Wolf alternative comparison.
- Meticulous records sessions of your web app and replays them on each pull request, with no tests to write (how it works). See our Meticulous alternative comparison.
For the wider market, read our guide to AI testing tools or browse all alternatives and comparisons.
Sources: Playwright, playwright.dev; Checksum home page, platform, E2E Agent, Results as a Service, pricing and integrations; Checksum docs: overview and generated API tests; Checksum, Checksum launches the Continuous Quality Loop (4 August 2026); QA Wolf pricing; Meticulous how it works. Competitor details change, so check their websites for the latest. Checked 20 September 2026.