Browserbase vs Steel

Browserbase and Steel.dev both provide cloud browser infrastructure purpose-built for AI agents. They solve the same operational problem — running headless browsers at scale without managing the infrastructure yourself — but they come at it from different positions. Browserbase is the funded market leader with enterprise customers. Steel.dev is the open-source challenger focused on developer control and cost efficiency.

Architecture and approach

Browserbase provides fully managed cloud browsers accessible via API. You create a session, get a WebSocket URL, and connect with Playwright or Puppeteer. The infrastructure handles browser lifecycle, resource allocation, and scaling. Browserbase also developed the Stagehand SDK, a TypeScript framework that adds AI-powered automation primitives (act, extract, observe) on top of the browser.

Steel.dev takes a more developer-centric approach. It's an open-source browser API that you can self-host or use via their managed cloud service. The architecture emphasizes giving developers direct control over browser sessions while handling the operational complexity of running browsers at scale. Steel's key technical differentiator is an 80% LLM token reduction feature — it strips unnecessary DOM elements before passing page content to language models, which directly reduces inference costs.

The philosophical difference matters: Browserbase wants to be the platform you build on (with Stagehand creating some degree of SDK lock-in). Steel wants to be the infrastructure you control (with open source ensuring you can always self-host).

Playwright and Puppeteer support

Both platforms support Playwright and Puppeteer, the two dominant browser automation libraries.

Browserbase provides a connect URL that works with both libraries. You write standard Playwright or Puppeteer code, point it at Browserbase's endpoint, and it runs in the cloud. The integration is clean — existing automation scripts work with minimal changes. Browserbase also offers its own Stagehand SDK as an alternative to raw Playwright/Puppeteer, which adds AI-powered element selection and natural language commands.

Steel.dev similarly provides a connect endpoint compatible with Playwright and Puppeteer. The integration follows the same pattern — connect to a remote browser via WebSocket. Steel also provides its own SDK with helper methods for common operations, but it's lighter-weight than Stagehand and less opinionated about how you structure your automation.

For teams with existing Playwright or Puppeteer codebases, both platforms are drop-in compatible. The choice between them won't be decided by automation library support.

Session management and persistence

This is an area where both tools have invested heavily, because AI agents need browser sessions that persist across multiple interactions — logging in, navigating through multi-step workflows, maintaining cookies and state.

Browserbase offers session management with configurable timeouts, session recording for debugging, and the ability to resume sessions. Session recordings are particularly useful for understanding what an AI agent actually did in the browser — you can replay the visual session to debug agent behavior. The live view feature lets you watch sessions in real time.

Steel.dev provides session persistence with cookie and state management. Sessions can be paused and resumed, and Steel handles the session lifecycle so browsers don't consume resources when idle. Steel also offers stealth capabilities — browser fingerprint management and anti-detection features that help sessions avoid bot detection on target sites.

The stealth aspect is where Steel differentiates from Browserbase. If your agent needs to interact with sites that actively detect and block automated browsers, Steel's anti-detection features provide a meaningful advantage. Browserbase is better positioned for compliant, above-board automation where stealth isn't a requirement.

Pricing and scale

Browserbase's pricing reflects its enterprise positioning. Plans start with a free tier (limited sessions), with paid plans scaling based on concurrent sessions and compute time. The pricing is premium relative to the category — Browserbase is not the budget option. Specific pricing tiers are usage-based and designed for teams that need reliability guarantees.

Steel.dev is more cost-competitive. The managed cloud service is priced below Browserbase, and the self-hosted option eliminates cloud per-session costs entirely (you pay only for your own infrastructure). For high-volume use cases where browser sessions number in the thousands per day, the cost difference between the two platforms becomes significant.

The self-hosting option is Steel's structural cost advantage. Teams running their own Kubernetes clusters or dedicated servers can deploy Steel's open-source stack and pay nothing beyond compute. Browserbase's open-source components don't provide the same self-hosting path for the full platform experience.

Integration with AI agents

Both platforms are designed for the AI agent use case, but they integrate differently.

Browserbase's Stagehand SDK is the more opinionated integration. It provides high-level primitives — act() to perform actions, extract() to pull data, observe() to understand page state — that map naturally to how AI agents interact with web pages. This abstraction layer reduces the amount of Playwright boilerplate you write and makes agent code more readable. The tradeoff is coupling: Stagehand code is specific to the Browserbase ecosystem.

Steel.dev integrates at a lower level. You use standard Playwright or Puppeteer with Steel's session management and token reduction features. The 80% token reduction is particularly valuable for AI agent use cases — by stripping irrelevant DOM elements before the page content reaches an LLM, Steel reduces inference costs and improves response quality. There's no equivalent of Stagehand's high-level abstractions, but there's also no SDK-specific coupling.

Both platforms offer MCP server support, making them accessible from Claude, GPT, and other LLM-based agents that support the Model Context Protocol.

Maturity and traction

Browserbase is the more established platform. With a $300M valuation, 50M+ sessions served, and customers including Perplexity, 11x, and Vercel, it has proven enterprise traction. The Stagehand SDK has its own community (11.5K+ GitHub stars), and Browserbase has established itself as the default recommendation for cloud browser infrastructure.

Steel.dev is earlier in its trajectory. With approximately 6,500 GitHub stars and a growing but smaller customer base, it's still building the production case studies that enterprise buyers look for. The WebVoyager leaderboard hosting is a smart community-building move, and the open-source approach gives it a different growth vector than Browserbase's top-down enterprise sales.

For risk-averse enterprise teams, Browserbase's track record provides more confidence. For teams that prioritize open-source foundations and cost control, Steel's trajectory is promising.

When to choose which

Choose Browserbase if:

• You want the most proven, enterprise-grade cloud browser platform
• The Stagehand SDK's high-level agent primitives appeal to your development style
• You need session recording and live view for debugging agent workflows
• Your use cases are compliant and above-board — you don't need stealth or anti-detection
• You want the broadest ecosystem of integrations and community support

Choose Steel.dev if:

• Cost control is important, especially at high session volumes
• You want the option to self-host and own your browser infrastructure
• You need stealth capabilities and anti-detection for target sites that block bots
• The 80% LLM token reduction aligns with your need to minimize inference costs
• You prefer open-source tools that avoid SDK-level vendor lock-in

Verdict

Browserbase is the safer, more established choice. If you're building a commercial product that depends on reliable cloud browser infrastructure and you have the budget, Browserbase delivers. The Stagehand SDK genuinely improves developer productivity for agent workflows, and the enterprise customer list provides confidence in uptime and reliability.

Steel.dev is the more interesting choice for technical teams. The open-source foundation, self-hosting option, competitive pricing, and stealth capabilities give it structural advantages that Browserbase's managed-only model cannot match. The token reduction feature alone can meaningfully reduce LLM costs in agent pipelines.

The market is early enough that both platforms will evolve significantly. Teams that prioritize long-term flexibility may prefer Steel's open-source approach, even if Browserbase is the more polished product today. Teams that prioritize time-to-production and enterprise support will find Browserbase's premium justified.