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, and mobile. 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 depends on usage and team needs. Visit the official Thunders website for the most up-to-date pricing information.

What platforms does Thunders support?

Thunders tests web applications, APIs, and mobile apps (currently in private beta on iOS and Android). 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, self-healing tests with proactive step suggestions, mobile testing (private beta), Authenticated Profiles that let tests skip login steps, test case branching, data-driven testing, live run streaming, and two-way integrations with Jira, Linear, Notion, ClickUp, Azure DevOps, and any MCP server.

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Thunders

AI test automation platform where teams write tests in natural language and AI Personas generate, execute, and maintain them across web, API, and mobile. Thunders AI connects to your tools (Jira, Linear, Notion, or any MCP server) to write tests grounded in your specs and file bugs where you work. No scripts. Less maintenance. Trusted by Microsoft, Allianz, Cegid, and Sopra Steria. ISO 27001, GDPR, SOC 2 compliant.

0.0

•0 reviews•0 upvotes

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

Continuous AI test execution

Self-healing tests with 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 (private beta, iOS and Android, device catalog, device control steps)

Authenticated Profiles: reuse a logged-in browser state so tests skip 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, JavaScript steps

Accessibility summary reports (one report per test case, WCAG)

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

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

Deepest coverage today is web and API; mobile device coverage is expanding across iOS and Android
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 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.

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 and CI/CD

Execute tests using specialized AI personas (QA, accessibility, SEO) on web or mobile devices, and integrate with your CI/CD pipeline. 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.