Gelt.dev vs Spider Cloud

Side-by-side comparison of features, pricing, and ratings

Analysis reviewed Live tool data as of 2026-09-01
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At a glance

DimensionGelt.devSpider Cloud
Core FunctionNatural language app builder to deploymentWeb scraping & crawling API for AI agents
PricingFreemium, pay-per-messageFreemium, ~$0.03/1k pages, AI Studio $6/mo add-on
Target UserNon-technical founders, product managersDevelopers, AI agents, RAG pipelines
Key IntegrationsStripe, VercelLangChain, LlamaIndex, S3, GCS, Supabase
Latest FeatureNo recent newsBrowser AI commands via WebSocket (2026-03-05)
Best ForOne-shot app prototypingHigh-volume web data extraction

Choose Spider Cloud if you need a high-performance, cost-efficient web scraping API for AI agents and RAG pipelines, with recent additions like Browser AI commands. Choose Gelt.dev if you want to build a full-stack web app from a natural language description without coding. They solve different problems—Spider Cloud gets you data, Gelt.dev gets you a deployable app.

Try Gelt.devTry Spider Cloud
Gelt.dev
Gelt.dev

Fixa (formerly Gelt.dev) is an AI software builder that turns plain-language descriptions into production-ready, deployable web apps.

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Spider Cloud
Spider Cloud

AI web scraping API: crawl, scrape, search any site into markdown or JSON at 10k req/min.

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Pricing
Freemium
Freemium
Plans
$0/month
$/month
Custom
$1/GB + $0.001/min compute
$40/mo (2 concurrency)
$6/mo
Popularity
0 views
7.5k views
Skill Level
Beginner-friendly
Intermediate
API Available
Platforms
Web
WebAPICLI
Categories
🚀 AI App & Website Builders
🌐 Web Scraping & Search APIs🖱️ Browser & Computer-Use Agents
Features
Natural language app description to deployment
Multi-agent planning and execution in cloud workspace
Start from scratch or import GitHub repository
Chat-based guidance and iteration
Connect MCP tools
Command palette for quick actions
One-click deploy to Vercel (via pricing page)
Stripe payment integration via chat
Full codebase download
Pay-per-message billing
Free tier includes GPT-5.6 Luna and Fixa Small
Premium models: Opus 5, Sol, Terra, Grok 4.6
Priority sandboxes on Starter
Ad-free experience on paid plans
Custom domains on Enterprise
Scrape any website into markdown, JSON, or raw HTML
Full-site crawling at 100K+ pages/sec
10,000 core API requests per minute default
Web Search API: SERP + scraping + extraction in one call
/ai/search endpoint with relevance gate to skip irrelevant pages
Silk AI model: HTML-to-structured data and captcha solving on GPUs
Browser Cloud: full browser sessions over CDP
AI commands (Act, Extract, Observe) via WebSocket with AI Studio
Multiple output formats: HTML, raw, plain text, markdown, JSON, JSONL, CSV, XML
Stealth browser layer and Unblocker for anti-bot sites
Proxy pool with 215M+ residential and ISP IPs across 199+ countries
Robots.txt compliance on by default, disable per-request
data_connectors parameter: pipe results to S3, GCS, Google Sheets, Azure Blob, Supabase
extraction_schema parameter: AI output conforms to JSON schema
1,000+ ready-made scraper examples across 32 categories
Integrations
Stripe
Vercel
LangChain
LlamaIndex
CrewAI
FlowiseAI
AutoGen
Agno

What real users say: Gelt.dev vs Spider Cloud

Not marketing copy and not our opinion — a structured sweep of public discussion (reviews, forums, communities and video comments), showing what people praise and what they complain about for each tool.

Gelt.dev

24 mentions across 3 sources · 63% positive — mixed

Hacker News, YouTube, Product Hunt

What users praise

  • • Natural language to full-stack app in minutes – no coding needed.
  • • Pay-per-message billing – only pay for what you generate.
  • • One-click deploy to Vercel with built-in Stripe integration.
  • • Multi-model AI support (Claude, GPT-5, Gemini) gives flexibility.

What frustrates them

  • • Very limited real user feedback – mostly just launch buzz.
  • • Support depends on a single teenage founder – risky for uptime.
  • • Stripe and Vercel integrations only – no external API support.
  • • Not suitable for complex or data-heavy applications.

Researched Jul 27, 2026

Spider Cloud

41 mentions across 2 sources · 0% positive — critical

YouTube, Lemmy

What users praise

  • • Competitive pay-as-you-go pricing at $1/GB with no expiry.
  • • Default rate limit of 10,000 requests per minute is generous.
  • • Broad output formats (HTML, markdown, JSON, CSV) cover diverse needs.
  • • Integrated Web Search API bundles SERP and extraction for AI agents.

What frustrates them

  • • No community feedback to confirm reliability or performance.
  • • Self-reported metrics lack independent verification.
  • • Stealth browser success may vary across real sites.
  • • Potential legal risks from scraping; compliance is user's responsibility.

Researched Aug 26, 2026

Who should pick which

  • AI agent developer
    Pick: Spider Cloud

    Spider Cloud provides a fast web crawling API with Rust engine, plus recent Browser AI commands for real-time interaction, ideal for feeding data to LLMs.

  • Non-technical founder
    Pick: Gelt.dev

    Gelt.dev lets you describe an app idea in natural language and deploys it to Vercel with Stripe integration, perfect for testing a business concept quickly.

  • Data engineer for RAG pipeline
    Pick: Spider Cloud

    Spider Cloud offers structured output, cloud connectors, and integrates with LangChain/LlamaIndex, directly feeding RAG pipelines.

  • Product manager prototyping
    Pick: Gelt.dev

    Gelt.dev enables rapid iteration of app ideas without coding, helping PMs validate features before development.

  • Freelancer scraping data for clients
    Pick: Spider Cloud

    The 1,000+ scraper catalog and low per-page cost make Spider Cloud efficient for client data extraction projects.

Frequently Asked Questions

Gelt.dev vs Spider Cloud: which should you choose?

Choose Spider Cloud if you need a high-performance, cost-efficient web scraping API for AI agents and RAG pipelines, with recent additions like Browser AI commands. Choose Gelt.dev if you want to build a full-stack web app from a natural language description without coding. They solve different problems—Spider Cloud gets you data, Gelt.dev gets you a deployable app.

What is the main difference between Spider Cloud and Gelt.dev?

Spider Cloud is a web scraping API for extracting data at scale; Gelt.dev is an AI app builder that generates deployable web apps from natural language.

Which tool is better for AI agents?

Spider Cloud, because it provides real-time web data, structured output, and recently added Browser AI commands (Act, Extract, Observe) via WebSocket.

Can I use Gelt.dev to scrape websites?

No, Gelt.dev is designed for building apps, not extracting data from other sites.

Does Spider Cloud offer a free tier?

Yes, it's freemium with usage credits; details are not fully specified but failed requests are not billed.

Can I build a Stripe-integrated app with Spider Cloud?

No, Spider Cloud is an API for crawling/scraping; it does not build apps or integrate Stripe.

How does pricing compare?

Spider Cloud charges ~$0.03 per 1k pages; Gelt.dev charges per message. Both have free tiers, but Spider Cloud offers more predictable scaling costs.

Which tool has more integrations?

Spider Cloud integrates with LangChain, LlamaIndex, S3, GCS, Supabase, etc. Gelt.dev integrates with Stripe and Vercel.

Is there a self-hosted version?

Spider Cloud has an open-source core on GitHub for self-hosting; Gelt.dev is cloud-only.

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Explore each tool further

Gelt.dev
View Gelt.dev reviewGelt.dev alternatives
Spider Cloud
View Spider Cloud reviewSpider Cloud alternatives

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Best AI AI App & Website Builders toolsBest AI Web Scraping & Search APIs toolsBest AI Browser & Computer-Use Agents tools
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Last reviewed: July 3, 2026