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Serpbit vs ISBNLab

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

Serpbit compared with ISBNLab
DetailSerpbit logo Serpbit ISBNLab
What it doesNot given Book metadata database and API for searching, converting and using ISBN data
StageNot given Not given
FoundedNot given Not given
Based inNot given US
Pricing modelFreemium Freemium
PricingFree plan with 1,000 credits per month. Starter $25/month for 25,000 credits. Developer $75/month for 100,000 credits. Production $150/month for 300,000 credits. Scale $350/month for 800,000 credits. Custom pricing available for 10M+ credits. Per-credit rates: $1.00 per 1,000 credits (Starter), $0.7 Free: $0/mo with 1,000 Daily Calls; Standard: $5/mo with 5,000 Daily Calls; Pro: $15/mo with 15,000 Daily Calls. Custom plans available.
Key features
  • Search results with AI Overview, knowledge panels and related questions
  • AI Mode with sources and places
  • Shopping with products, prices, stores and filters
  • Maps with places, ratings, hours and coordinates
  • News articles with source, date and story
  • Images with originals
  • Videos with duration, platform and channel
  • Autocomplete search suggestions
  • Cached queries free within one hour
  • MCP server for AI agents
  • REST and GraphQL API
  • ISBN validation and conversion
  • Multiple response formats: JSON-LD, JSON and CSV
  • OpenAPI and Swagger documentation
  • Official client libraries for PHP, Python, TypeScript/JavaScript and Go
  • Catalog of 102.1M book editions
  • Groups every edition of a book together
  • Comprehensive book data: ISBN-10, ISBN-13, EAN, ASIN, title, authors, publishers
  • Author information including names, birth and death dates, biography and photos
What makes it different
  • Every search checked for poisoned pages for clean results
  • Ten APIs on one key with unified credits system
  • Results available in JSON, Markdown for LLMs, or raw HTML
  • Drop-in replacement for Google Custom Search API with no daily cap
  • One consistent schema for every book keyed by ISBN
  • Catalog of 102.1M book editions
  • ISBN validation and conversion for any valid ISBN, not just books in the catalog
  • Suitable for beginner, intermediate and advanced users
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check4 no change since last check
Trust Flow (Majestic)01
Citation Flow (Majestic)032
Referring domains (Majestic)06

4 details filled in for both companies.

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