Context.dev vs Kastor (2026)
A side-by-side comparison of Context.dev and Kastor on pricing, features, and fit, so you can decide which is right for you.
Quick answer
Context.dev and Kastor are both strong choices, but they fit different needs. Choose Context.dev if you mainly need building ai agents that require real-time web data as context for reasoning — its edge is single api eliminates the need to maintain multiple scraping tools or services. Choose Kastor if you need building multi-step research assistants that delegate subtasks to specialized sub-agents — its edge is completely free and open-source with no licensing fees or usage limits. Context.dev starts at approximately $49/month based on usage volume; Kastor starts at Free.
Features compared
- Unified scraping API that handles proxy rotation and bot bypass automatically
- Structured data extraction from any public web page or source
- Data enrichment capabilities to add context and metadata to raw results
- Scalable infrastructure designed to support high-volume API requests without downtime
- Multi-agent orchestration framework for coordinating multiple AI agents simultaneously
- Open-source codebase with full transparency and community-driven development
- Extensible architecture supporting custom LLM backends and tool integrations
- Agent communication and context-sharing protocols for collaborative task execution
Pros & cons
- Single API eliminates the need to maintain multiple scraping tools or services
- Developer-friendly design reduces time-to-integration for engineering teams
- Handles anti-bot measures and proxy rotation out of the box saving significant effort
- Pricing may scale quickly for very high-volume use cases making costs unpredictable
- Limited transparency around data freshness guarantees and coverage for niche or paywalled sites
- Completely free and open-source with no licensing fees or usage limits
- Gives developers full control over agent logic, memory, and integrations
- Active open-source community enables rapid iteration and community-contributed extensions
- Requires developer expertise to set up and configure compared to managed platforms
- Documentation and support may be limited compared to commercial multi-agent frameworks
The verdict
Choose Context.dev if
you mainly need to building ai agents that require real-time web data as context for reasoning. Its edge: single api eliminates the need to maintain multiple scraping tools or services.
Choose Kastor if
you mainly need to building multi-step research assistants that delegate subtasks to specialized sub-agents. Its edge: completely free and open-source with no licensing fees or usage limits.
Frequently asked questions
Is Context.dev better than Kastor?
Neither is universally better. Context.dev is stronger for building ai agents that require real-time web data as context for reasoning, with an edge in single api eliminates the need to maintain multiple scraping tools or services. Kastor is stronger for building multi-step research assistants that delegate subtasks to specialized sub-agents, with an edge in completely free and open-source with no licensing fees or usage limits. Pick based on your main task.
Which is cheaper, Context.dev or Kastor?
Context.dev starts at approximately $49/month based on usage volume and Kastor starts at Free. Free tier: Context.dev — Limited API calls available on a free plan for testing and evaluation; Kastor — Fully free and open-source.
What is Context.dev best for?
Context.dev is best for building ai agents that require real-time web data as context for reasoning, automating lead enrichment pipelines by pulling company and contact data from the web, powering competitive intelligence tools with up-to-date pricing and product information.
What is Kastor best for?
Kastor is best for building multi-step research assistants that delegate subtasks to specialized sub-agents, automating complex workflows where multiple ai agents must collaborate and hand off results, prototyping agentic pipelines for startups or research teams without incurring api or platform costs.
Do Context.dev and Kastor have free plans?
Context.dev: Limited API calls available on a free plan for testing and evaluation. Kastor: Fully free and open-source. Check each tool's pricing page for current limits, as plans change.