Tabstack

Tabstack targets tinkerers, hobbyists, and teams that need to connect their systems to the internet for advanced data extraction, web research, or browser automation. Its tiered offerings are designed to support users from individual projects to production workloads requiring efficient scaling and predictable costs.

Tabstack operates on a freemium model, offering 10,000 free credits to all new accounts. Beyond the free tier, it provides Individual (pay-as-you-go), Team, and Pro plans, which are subscription-based with included credits and decreasing per-credit overage rates. An Enterprise plan is also available for custom requirements.

• Backed by Mozilla, emphasizing privacy, transparency, and data control where user data is never sold or used to train models.
• Provides a single API call for complex tasks like structured data extraction, autonomous web research with citations, and browser automation.
• Utilizes an open-source browser engine, Pilo, which is more token-efficient than screenshot-based methods for automation.
• Delivers schema-matched JSON and reasoned output directly from user instructions, streamlining development by removing LLM and browser infrastructure management.
• Offers a generous free tier (10,000 credits) with no credit card required to start, and transparent pay-as-you-go pricing.
• Features like inline citations on research claims and the ability to navigate, click, and fill forms on JS-heavy pages.

• Updated pricing plans were announced on April 6, 2026, indicating ongoing product and business model adjustments.
• The company is actively hardening AI web agents against indirect prompt injection, as highlighted in a blog post on June 12, 2026.
• Pilo, their open-source browser engine, was upgraded to support human-in-the-loop browser automation on April 16, 2026.
• Actively hiring for senior roles including Machine Learning Engineer (AI Platform), 0->1 Engineer (Open Source AI), and Strategic Account Executives, signaling growth and focus on AI and enterprise markets.
• A recent GitHub release (v2.6.1) and commits were made on May 5, 2026, alongside ongoing open issues and pull requests, indicating active development.

Extract data and automate the web in one API call

Get structured output from one API call. Run extraction, web research, and browser automation without managing LLM orchestration, browser infra, or pipelines.

Mozilla-backed, includes 10,000 free credits, quoted testimonial from Developer Experience Researcher at Tech Stackups.

• 10,000 free credits
• Never trained on
• No credit card required
• Clean Markdown from any URL
• Schema-matched JSON returned inside the call
• Reasoned output from your instructions, not just field extraction
• Streams results over SSE
• Inline citations on every claim
• Answers from the live web, not a pre-indexed cache
• Pauses for human input with interactive mode
• Navigates, clicks, and fills forms on JS-heavy pages
• Powered by Pilo, our open-source browser engine that uses 60-80% fewer tokens than screenshots
• Private by default. Requests and retrieved pages are used to complete your call and support you, then purged. Never sold, never used to train models.
• Transparent by design. Mozilla-documented data practices and robots.txt compliance by default. See exactly how every endpoint sources and handles your data.
• Yours to control. You set the scope and depth of every call. No retained corpus, no lock-in, just clean data you own.

1. 2026-06-12Hardening AI Web Agents: How We're Securing Tabstack Against Indirect Prompt Injection
2. 2026-04-16Upgrading Pilo to Support Human-in-the-Loop Browser Automation
3. 2026-04-06Tabstack's New Pricing Plans
4. 2026-03-17Not Every Page Needs a Browser
5. 2026-02-24Scaling Web Automation with Pilo and Agentic AI
6. 2026-02-03Tabstack Research: Verified Answers from the Open Web
7. 2026-01-14Tabstack: Browsing Infrastructure for AI Agents