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AlterLab vs String

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

AlterLab compared with String
DetailAlterLab logo AlterLabString logo String
What it doesWeb scraping API that automatically routes requests through five tiers, from simple HTTP to full browser rendering, billing only for successful requests starting at $0.0002 per page. Web scraping API that reliably accesses any page, even those protected by anti-bot systems
StageStartup Not given
Founded2026 Not given
Based inUS US
Pricing modelPaid Freemium
PricingFree tier: up to 5,000 free requests with no credit card required. Pay-as-you-go after that: Light tier $0.0002 per request, Standard tier $0.0003 per request, Protected tier $0.002 per request, Dynamic tier $0.004 per request (or $0.0005 when page loads via direct egress), Fortress tier $0.02 per r Not given
Key features
  • Five-tier smart router automatically selects optimal tier for each request, from static HTTP to full browser rendering
  • JavaScript rendering with full browser support for React, Vue, Angular, Next.js and infinite scroll pages
  • Multiple output formats: markdown, JSON, HTML, and text with optional RAG chunking
  • Hosted MCP server for AI agents with Claude Code, Cursor, Codex and Windsurf integration
  • Automatic CAPTCHA solving and TLS fingerprint compatibility
  • Python and Node.js SDKs with machine-readable docs (llms.txt, OpenAPI)
  • Page change monitoring with webhooks and cron scheduler support
  • Batch processing up to 100 URLs per call with async jobs and webhook delivery
  • Handles Cloudflare, DataDome, PerimeterX, Akamai, Kasada, and CAPTCHA anti-bot systems automatically
  • 98.6% success rate on hard-to-scrape sites
  • 0.41s median latency, 0.9s at p95
  • Supports up to 10,000 concurrent fetches and 5,000 browser sessions
  • AI agent integration via MCP protocol
  • Automatic request escalation from lightweight to premium routing
  • Full browser rendering for JavaScript-heavy pages
  • CAPTCHA solving available with opt-out for compliance
What makes it different
  • Balance never expires with no monthly resets or use-it-or-lose-it policies
  • Built by experienced developers at RapierCraft Studios focused on long-term reliability over growth metrics
  • Fast human support from people who understand the product, usually within hours not days
  • Lowest mean latency of 4.24s per target among all providers tested
  • No infrastructure to manage - single HTTP call instead of proxy rotation and browser babysitting
  • Ready integration with AI agents via MCP protocol without additional setup
Community votes00
DR (Domain Rating by Ahrefs)17 +1 (up) since last check26 +1 (up) since last check
Trust Flow (Majestic)213
Citation Flow (Majestic)2929
Referring domains (Majestic)93129

5 details filled in for both companies.

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