SWE ReX 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

DimensionSWE ReXSpider Cloud
PricingFreePay-as-you-go from $1/GB bandwidth + compute; AI Studio add-on $6/mo
Primary Use CaseSandboxed code execution for AI agentsWeb crawling, scraping, and search API for AI agents
Key DifferentiatorMassively parallel, isolated execution environments with resource controlRust engine with 99.9% success rate, stealth anti-detection, and ready-made scraper catalog
Latest NewsNo recent news capturedBrowser AI commands, scraper catalog, data connectors, dashboard redesign (Feb-Mar 2026)
IntegrationsSWE-agent, LangChain, LangGraph, CrewAI, AutoGPTLangChain, LlamaIndex, CrewAI, FlowiseAI, AutoGen, Agno, Dify, Google Cloud Storage, Amazon S3, Supabase
Best ForAI agent developers needing safe, scalable code executionAI agents needing real-time web data for RAG and LLM context

If your AI agent needs to execute code safely at scale, SWE ReX is the free, purpose-built sandbox. If your agent needs to ingest fresh web data with high reliability and anti-detection, Spider Cloud's pay-as-you-go API with its Rust engine and ready-made scrapers is a better fit. They are complementary: you might use both in a pipeline.

Try SWE ReXTry Spider Cloud
SWE ReX
SWE ReX

Open-source, sandboxed code execution designed for AI agents.

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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
Free
Freemium
Plans
—
$1/GB + $0.001/min compute
$40/mo (2 concurrency)
$6/mo
Popularity
3 views
7.5k views
Skill Level
Advanced
Intermediate
API Available
Platforms
CLIAPIPlugin
WebAPICLI
Categories
🧠 Agent Memory & Runtimes
🌐 Web Scraping & Search APIs🖱️ Browser & Computer-Use Agents
Features
Sandboxed code execution for AI agents
Massively parallel execution
Local and cloud deployment
Isolated execution environments per session
Multi-language support (Python, JavaScript, Go, Java, Rust, TypeScript)
Resource control (CPU, memory, time limits)
Extensible tool system for custom actions
Detailed execution logs and traces
Integration with SWE-agent
Automatic cleanup of execution artifacts
File system isolation and network restrictions
Composable tools and workflows
Supports multi-language SWE tasks (Go, Java, Python, Rust, TypeScript)
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
SWE-agent
LangChain
LangGraph
CrewAI
AutoGPT
LlamaIndex
FlowiseAI
AutoGen
Agno

What real users say: SWE ReX 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.

SWE ReX

19 mentions across 3 sources · 40% positive — mixed

Bluesky, GitHub, Lemmy

What users praise

  • • Massive parallelism for agent code execution runs many tasks simultaneously.
  • • Sandboxed isolation prevents malicious code from affecting the host system.
  • • Simple default configuration gets agents running in cloud containers quickly.
  • • Integrates tightly with SWE-agent, enabling immediate deployment in agent workflows.

What frustrates them

  • • Windows compatibility broken – temp file deletion bug on Windows 10 + Docker.
  • • 5-minute default timeout kills long-running installation scripts.
  • • Small community means limited peer support and slow issue resolution.
  • • Peak adoption one year ago; current buzz is minimal beyond bug reports.

Researched Jul 6, 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 needing safe code execution
    Pick: SWE ReX

    SWE ReX provides free, massively parallel, isolated execution environments with resource control and multi-language support. It integrates directly with agent frameworks like LangChain, CrewAI, and AutoGPT.

  • Developer building a RAG pipeline that needs fresh web data
    Pick: Spider Cloud

    Spider Cloud's Rust engine offers fast, reliable web crawling with structured output, anti-detection, and new data connectors to cloud storage. The scraper catalog provides ready-made examples for common sites.

  • Researcher prototyping agentic systems
    Pick: SWE ReX

    SWE ReX is free and can be deployed locally, making it ideal for iterative testing of code execution within agent workflows without worrying about costs.

  • Team scraping high-volume e-commerce data
    Pick: Spider Cloud

    With pay-as-you-go pricing at $0.03 per 1,000 pages and a Rust engine, Spider Cloud offers high throughput at low cost. The unblocker and stealth features help bypass anti-bot measures.

Frequently Asked Questions

SWE ReX vs Spider Cloud: which should you choose?

If your AI agent needs to execute code safely at scale, SWE ReX is the free, purpose-built sandbox. If your agent needs to ingest fresh web data with high reliability and anti-detection, Spider Cloud's pay-as-you-go API with its Rust engine and ready-made scrapers is a better fit. They are complementary: you might use both in a pipeline.

Can I use SWE ReX to scrape websites?

SWE ReX is designed for sandboxed code execution, not web scraping. It can run Python/JS code, but for dedicated crawling and anti-detection, Spider Cloud is better suited.

Does Spider Cloud provide code execution sandboxes?

No, Spider Cloud is a web scraping and crawling API. It does not offer general-purpose code execution environments like SWE ReX.

Which tool integrates with LangChain?

Both integrate with LangChain. SWE ReX offers a code execution sandbox for agents; Spider Cloud provides a data retrieval tool for RAG pipelines.

Is SWE ReX truly free?

Yes, SWE ReX is free with no pricing tiers. It can be deployed locally or in the cloud at no cost beyond your own infrastructure.

What are the new Browser AI commands in Spider Cloud?

As of March 2026, Spider Cloud added Browser AI commands via WebSocket: Act (click, type, navigate), Extract (pull structured data), and Observe (describe screen). Requires AI add-on.

Can I use both tools together?

Absolutely. For example, use Spider Cloud to scrape relevant web data, then pass it to an agent that executes code safely in SWE ReX for processing.

Does Spider Cloud have a free tier?

Spider Cloud is pay-as-you-go with a starting balance; there is no free tier mentioned. Costs start at $1/GB bandwidth plus compute.

What languages does SWE ReX support?

SWE ReX supports multiple languages including Python and JavaScript, with resource control and isolated execution.

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Explore each tool further

SWE ReX
View SWE ReX reviewSWE ReX alternatives
Spider Cloud
View Spider Cloud reviewSpider Cloud alternatives

Browse these categories

Best AI Agent Memory & Runtimes toolsBest AI Web Scraping & Search APIs toolsBest AI Browser & Computer-Use Agents tools
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Last reviewed: July 6, 2026