What is Thunders used for?

Thunders is an AI-powered test automation platform that helps teams generate, run, and maintain tests using natural language, across web, API, mobile, SAP, and desktop. Instead of writing scripts, teams describe user flows or connect their own tools (Jira, Notion, Linear, or any MCP server), and Thunders generates executable tests grounded in real specifications. AI testing personas simulate specialists, like QA engineers, accessibility reviewers, and SEO auditors, to validate applications and detect regressions before releases.

How much does Thunders cost?

Thunders offers a free trial and paid plans starting at €300 per month. Pricing is volume based and scales with your usage: you pay for the test steps you run. Visit the official Thunders website for the most up-to-date pricing information.

What platforms does Thunders support?

Thunders tests web applications, APIs, and native mobile apps on real iOS and Android devices, SAP applications running in the browser (SAP WebGUI), and desktop applications via virtualization, with EU or US data residency options. Tests can validate complex user flows across multiple applications within the same product environment.

What programming languages does Thunders support?

Thunders does not require programming languages. Tests are written in natural language, allowing QA engineers, developers, and product managers to create automated tests without writing code.

What are the key features of Thunders?

Key features include natural-language test generation, AI test plans that generate and run test cases, AI testing personas for functional, accessibility, and SEO testing, visible self-healing with proactive step suggestions, mobile testing on real iOS and Android devices, SAP testing in the browser (WebGUI), desktop testing via virtualization, scheduled test runs, breakpoints, Authenticated Profiles that let tests skip login steps, test case branching, data-driven testing, project-level access control, live run streaming, and two-way integrations with Jira, Linear, Notion, ClickUp, Azure DevOps, and any MCP server.

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Thunders

Thunders is an end-to-end testing automation platform. Write your tests in natural language, not scripts, and Thunders AI builds them from your own product context: specs in Jira, Linear, Notion, or any MCP server. AI Personas execute and maintain them across web, mobile, API, and SAP. When a run fails, Thunders AI explains why and files the bug in Jira or Linear, ready to reproduce. Tests self-heal when your UI changes, and you can see every fix. Trusted by Microsoft, Allianz, Cegid, and Sopra Steria. ISO 27001, GDPR, and SOC 2 compliant.

0.0

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Volume based, starts at 0.80€/100 test steps

Pricing

beginner

Complexity

Small to Enterprise

Solo to enterprise teams

Team Fit

Features

Visit Website

Quick Info

Primary Category

AI Test Automation

Secondary Categories

ai-test-generationself-healing-teststest-analysis-insightstest-managementweb-testing

Programming Languages

None required: All Natural Language

Supported Platforms

WebMobileAPI

Official Website

Visit Thunders

Key Features

Natural-language test generation

AI test plans that generate and run test cases

Test recorder

AI testing personas (QA; accessibility; SEO)

Cross-application testing including API and mobile steps combined in one test

Continuous AI test execution

Visible self-healing: every healed step is shown in the run with what changed; a failures-avoided score in Analytics; plus pre-run and post-run step suggestions

AI test execution analysis and debugging

Test analytics and coverage

Test management and collaboration (ownership; Inbox notifications; full activity history)

CI/CD pipeline integration with live run streaming

Two-way tool integrations: read specs and file bugs in Jira; Linear; Notion; ClickUp; Azure DevOps; and Shortcut

Thunders MCP server plus custom MCP connectors to connect any tool

Enterprise security and compliance

Multi-team workflow support

Mobile testing on real iOS and Android devices: generally available; AI-written tests; Mobile App Browse; runs start in about two seconds; EU or US data residency

Authenticated Profiles: capture a login once then inject the saved session at the start of any test so it skips login steps

Test case branching: edit tests in a branch without touching the main version

Data-driven testing: per-test-case data files; variables across test sets; writable variables that a step can update everywhere mid-run; JavaScript steps

Accessibility summary reports (WCAG and RGAA) on web; iOS; and Android using native platform scanners

AI triage and debugging: Thunders AI investigates failed runs; pinpoints the failing step; separates real product bugs from test issues; and drafts a bug report ready to file in your issue tracker

AI coaching: Thunders AI acts as a testing coach; suggesting step improvements before and after runs; flagging fragile steps; and recommending fixes as your product evolves

Scheduled test runs: Test Sets run on a recurring schedule per environment and persona with pause and resume

Breakpoints: pause a run on any step; inspect; edit steps or record new ones; then resume

Project-level access control: scope each user's access to specific projects including a read-only role

Environment-level default run settings: configure browser; device; resolution; and advanced settings once per environment so every new test picks them up

SAP testing: add a SAP application to a project and test SAP WebGUI flows in the browser like any other app

Desktop app testing via virtualization: test desktop applications through virtualization solutions such as Azure Virtual Desktop as another app type in your project

Pros

Tests can be created without writing automation scripts
Much less time spent fixing broken tests
Faster understanding of why a test failed
Simple way to turn requirements into test cases
Makes automated testing accessible to non-developers
Covers functional, accessibility, and SEO testing across web, API, and mobile in one tool
Reads specs and files bugs directly in the tools teams already use (Jira, Linear, Notion, and more)

Cons

Some advanced scenarios require prompt tuning
Teams used to code-based automation may need time to adapt
Free trial available, ongoing use requires a paid plan

Limitations

Focused on functional end-to-end testing; load and performance testing are not covered
Natural-language prompts may need refinement for complex flows

What Can You Do With Thunders?

Real-world use cases and scenarios where Thunders excels

🔄

AI-Powered Regression Testing

Run every release, or a recurring schedule, through a team of AI testing personas that simulate real users and specialized testers. Automatically detect regressions before they reach production.

📝

Generate Tests from Requirements

Turn product specifications into complete test plans and executable test cases, helping teams move from requirements to test coverage quickly.

🔐

Test Behind Login, Reliably

Authenticated Profiles capture and reuse a logged-in browser state, so tests start past the login wall instead of replaying credentials on every run.

🐛

From Spec to Bug Report, In Your Tools

Connect Jira, Linear, Notion, or any MCP server. Thunders AI reads your specs to generate grounded tests, then files bugs back following your team's triage rules.

📱

Test Mobile Apps Without a Device Lab

Thunders AI writes the test, real iOS and Android devices run it with runs starting in about two seconds, and self-healing keeps it passing as your app changes.

Getting Started with Thunders

Follow these steps to start testing with Thunders

Create a project

Create a project for the product you want to test. Projects organize the applications, environments, and tests for your product.

Add the applications to test

Define the applications that make up your product: customer-facing web apps, admin dashboards, APIs, or mobile apps. Tests can span multiple applications within a single project.

Connect your tools

Connect Jira, Confluence, Notion, Linear, ClickUp, Azure DevOps, or any MCP server. Thunders reads from them to generate relevant test plans, and writes back when filing bugs.

Generate tests in natural language

Create test plans and test cases from requirements or write them directly using natural language. Thunders converts them into executable tests automatically.

Run tests with AI personas, CI/CD, and schedules

Execute tests using specialized AI personas (QA, accessibility, SEO) on web or mobile devices, integrate with your CI/CD pipeline, or put Test Sets on a recurring schedule. Follow any run live, even ones triggered from CI.

Get Started with Thunders →

Pricing & Plans

USAGE-BASED

Volume-Based Pricing

Thunders offers a usage-based pricing model that starts at €0.80 per 100 test steps, with options to scale as your test volume grows.

💡 Recommendation: Try the free version first, then upgrade as your testing needs grow.

View Pricing Details →

Frequently Asked Questions About Thunders

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Final Verdict

Try It Yourself

Thunders rethinks test automation around AI. Instead of writing and maintaining complex test frameworks, teams generate tests in natural language and run them with AI testing personas that continuously validate the product and detect regressions before releases.

✅ Best For:

• Teams that want to create automated tests without writing scripts
• Teams that want broader test coverage across functionality, accessibility, and SEO
• Teams that want to spend less time maintaining fragile automation
• Teams that want one platform for web, API, and mobile testing

⚠️ Consider If:

• You believe writing and maintaining large automation frameworks may not be the future
• You want to move faster by letting AI generate and run tests
• You want confidence that regressions will be detected before users experience them

Try Thunders Now →Compare Alternatives

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TestGuild Expert Coverage

AI Test Automation: Ship Twice as Fast

Most AI testing tools still generate fragile code that breaks with every UI change. In this TestGuild podcast episode, Karim Jouini (Founder of Thunders) shares a different approach: running automated tests directly in plain English—no Selenium or Playwright code required. Learn how teams are shipping faster, achieving 10× coverage, and cutting regression cycles from weeks to days with AI-driven testing. Real case studies included.