Heretic vs Spider Cloud

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

Analysis generated Live tool data as of 2026-11-13
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Heretic or Spider Cloud: which should you choose?

DimensionHereticSpider Cloud
PricingFreeFrom $6/mo
Best forAI safety researchers studying how refusal and censorship training shapes model behaviour, Developers running local open-weight inference who need unfiltered output from weights they already hostEngineering teams where pages-per-second throughput is the bottleneck, RAG and agent teams that want rendered pages back as markdown or structured JSON
Standout featuresRemove refusal and censorship behaviour from open-weight language models · Patch or wrap an existing model rather than replacing it · Preserve model performance and coherence during modificationScrape a single page into markdown, JSON, HTML, raw, or plain text · Crawl entire sites with each page streamed as one JSONL line in order · Web search endpoint returns SERP results plus the pages behind them
Viability score69/10085/100
APINoYes

Heretic is the stronger pick for ai safety researchers studying how refusal and censorship training shapes model behaviour; Spider Cloud fits better for engineering teams where pages-per-second throughput is the bottleneck.

Built from live tool data, last verified 2026-11-13.

Heretic
Heretic

Open-source tool that removes refusal behaviour from open-weight language models so they follow your instructions

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Spider Cloud
Spider Cloud

Web scraping, crawling and search API that returns clean markdown or JSON for RAG pipelines and AI agents.

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Pricing
Free
Paid
Plans
FreeFree
Pay as you go$1/GB
AI Studio AlphaFrom $6/mo
UnlimitedFrom $40/mo
EnterpriseCustom
Popularity
15 views
7.5k views
Skill Level
Advanced
Intermediate
API Available
Platforms
CLIAPI
WebAPIPlugin
Categories
🛡️ AI Governance & Guardrails
🌐 Web Scraping & Search APIs🖱️ Browser & Computer-Use Agents
FeaturesHereticSpider Cloud
Remove refusal and censorship behaviour from open-weight language models
Patch or wrap an existing model rather than replacing it
Preserve model performance and coherence during modification
Command-line interface: heretic Qwen/Qwen3.5-4B
Python API for scripted and pipeline use
Install via pip install -U heretic-llm
Documented Tutorial, Installation, Configuration and Security pages
Runs locally on your own machine
No telemetry or data collection
AGPLv3-or-later free software licence
Source code on GitHub, model artefacts on Hugging Face
Community support via Discord and Matrix
Works with open-weight models such as Qwen/Qwen3.5-4B
Scrape a single page into markdown, JSON, HTML, raw, or plain text
Crawl entire sites with each page streamed as one JSONL line in order
Web search endpoint returns SERP results plus the pages behind them
Browser rendering executes scripts, loads lazy images, reaches infinite scroll
Stealth mode loads protected pages through a native browser engine with geo checks, returning 200
Full browser sessions over WebSocket at browser.spider.cloud
Rotating residential and ISP proxy pool across 199 countries with proxy rotation on every request
Provider router routes scrape and crawl requests to outside providers on your own keys
Prompt-based extraction returns named fields as JSON from scrape or crawl
Browser AI commands: Act, Extract and Observe modes over the browser WebSocket
extraction_schema parameter makes AI output conform to a JSON schema
Relevance gate skips pages not matching your prompt before they are billed
/ai/search searches the web and scrapes results in one call
/ai/unblocker combines AI extraction with the Unblocker in a single endpoint
CLI picks HTTP or a browser per page and stops at your budget
IntegrationsHereticSpider Cloud
Hugging Face
GitHub
Discord
Matrix
LangChain
LlamaIndex
CrewAI
Agno
Dify
Flowise
Langflow
MCP
Claude Code
Codex
Cursor
Claude Desktop
Windsurf
Amazon S3
Google Cloud Storage

Frequently Asked Questions

Which is better, Heretic or Spider Cloud?

The best choice between Heretic and Spider Cloud depends on your specific use case — we compare them independently on features, current pricing, integrations, and real-world signals (with an on-demand sentiment scan available for each). See the side-by-side breakdown above to match them to your needs.

What are the main differences between Heretic and Spider Cloud?

The key differences include pricing model, feature set, platform support, and skill level requirements. Review the full comparison on RightAIChoice for a detailed breakdown.

Is there a free version of Heretic or Spider Cloud?

Check the pricing section in the comparison for the latest pricing details on both tools, including free tiers, trial options, and paid plans.

What else are Heretic and Spider Cloud compared with?

Where can you read more about Heretic and Spider Cloud?

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Analysis generated by our model pipeline from live data: