Lightpanda vs act101

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Lightpanda compared with act101
Detail	Lightpanda	act101
What it does	The AI-native web browser built from scratch for machines	Quality infrastructure for AI-written code with deterministic refactoring and a merge gate
Stage	Not given	Startup
Founded	Not given	2026
Based in	Not given	US
Pricing model	Freemium	Freemium
Pricing	Explorer: Free with 10 browser hours per month and 5 concurrent sessions. Builder: $19/month with 300 browser hours per month and 30 concurrent sessions, then $0.08/hour. Enterprise: Custom volume pricing with dedicated support and SLA guarantees.	Builder Edition: Free forever for personal, non-commercial, and open-source use. Engineering Edition: $29/month or $299/year (save 14%). Architecture Edition: $59/month or $599/year (save 15%). Elite Edition: $99/month or $999/year (save 16%). Enterprise: Custom pricing, contact sales. All editions
Key features	True headless without CSS, images, layout or GPU compositing Full JavaScript execution via V8 CDP-compatible with Playwright and Puppeteer Multi-client concurrent CDP connections in a single process Request interception to block, modify or mock HTTP requests Robots.txt compliance via obey_robots flag 9x faster execution than Chrome headless 16x less memory usage than Chrome headless Built in Zig for performance and efficiency Purpose-built for headless operation without rendering overhead	182 AST-aware refactor operations for code transformation 42 codebase analyzers for code analysis Support for 163 programming grammars Deterministic merge gate with signed receipts MCP server and CLI interfaces Cross-file import updates and automatic checkpointing 10 cross-language porting operations Instant undo for all operations ~88% token savings on query operations Native binary with zero dependencies and no supply chain risk
What makes it different	Not a fork or patch of existing browsers but built completely from scratch Designed specifically for cloud environments rather than adapted from desktop browsers 10x faster execution and 10x less RAM than Chrome headless Isolated environments without persistent state for secure automation Open source under AGPL-3.0 license with production-ready 1.0 release	Deterministic verdicts and signed receipts for every code change ensure reproducible quality gates Built by engineer with decades of production experience in correctness-critical domains
Community votes	0	0
DR (Domain Rating by Ahrefs)	46 +1 (up) since last check	27 no change since last check
Trust Flow (Majestic)	28	8
Citation Flow (Majestic)	36	31
Referring domains (Majestic)	784	182

5 details filled in for both companies.

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