Playwright vs Steel (2026)
Updated March 10, 2026
Overview
Playwright by Microsoft is an open-source browser automation framework.
Steel is an open-source browser API and sandbox designed for AI agents. It provides managed browser sessions with authentication persistence, anti-detection, and debugging tools, handling the infrastructure complexity of running browsers at scale for autonomous AI workflows.
Strengths and tradeoffs
What each tool does well, and the limitations to keep in mind.
Pros
- Completely free open-source framework with no hidden costs
- Auto-wait mechanism eliminates flaky tests from timing issues
- Ships with browsers included—no separate driver management
- Multi-language support with consistent APIs across platforms
Cons
- Async/await patterns create learning curve for beginners
- High memory usage (200-500MB per instance) limits scaling
- Emulated mobile testing only—no real device support
- Large test suites require 50 percent of team time for maintenance
Pros
- Production-ready
- Good performance
- Active development
Cons
- Pricing varies
- Setup required
Compare Playwright and Steel on your own traffic
Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 1,000+ models through one gateway.
Try Respan freeFrequently Asked Questions
Other popular comparisons
Anthropic Computer Use vs OpenAI Operator
Anthropic Computer Use vs Browser Use
Anthropic Computer Use vs Google Project Mariner
Anthropic Computer Use vs Browserbase
Browser Use vs OpenAI Operator
Google Project Mariner vs OpenAI Operator
Browserbase vs OpenAI Operator
Browser Use vs Google Project Mariner
Browser Use vs Browserbase