AgentKey vs Katzilla: Which is Better in 2026?
Choosing between AgentKey and Katzilla comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
AgentKey
Unified API access to 1,800+ live data sources for AI agents
Best for you if:
- • You need API tools features specifically
- • Unified API gateway providing 1800+ live data sources through a single MCP connection for AI agents.
- • Covers search, web scraping, social media, finance, e-commerce, cryptocurrency, and business data in one subscription.
Katzilla
The data backbone for AI agents, providing trusted government data with built-in citation.
Best for you if:
- • You need AI agents features specifically
- • Provides a single API for over 250,000 US government datasets.
- • Ensures AI agent trustworthiness with built-in citation from primary sources.
| At a Glance |  AgentKey |  Katzilla |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | API Tools | AI Agents |
Rating | - | - |
Free plan | Yes | Yes |
Choose AgentKey or Katzilla?
Choose AgentKey if
Unified API access to 1,800+ live data sources for AI agents
- Eliminates the need to manage multiple API keys, quotas, and bills from different providers.
- Broad coverage of data sources including niche Chinese platforms like Douyin, WeChat, and Zhihu.
- Simple one-command setup and single MCP integration for any compatible AI agent.
- Your work is API tools-shaped, not AI agents-shaped
Choose Katzilla if
The data backbone for AI agents, providing trusted government data with built-in citation.
- Ensures high trustworthiness and reduces AI hallucinations with primary source citations.
- Consolidates a vast array of government data behind a single, easy-to-use API.
- Offers specialized tools for comprehensive data access, including web scraping and monitoring.
- Your work is AI agents-shaped, not API tools-shaped
| Feature | AgentKey | Katzilla |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | No ratings yet | No ratings yet |
| Categories | API ToolsAI Agents | AI AgentsData & Databases |
In-Depth Analysis
AgentKey
Unified API access to 1,800+ live data sources for AI agents
Strengths
- +Eliminates the need to manage multiple API keys, quotas, and bills from different providers.
- +Broad coverage of data sources including niche Chinese platforms like Douyin, WeChat, and Zhihu.
- +Simple one-command setup and single MCP integration for any compatible AI agent.
Weaknesses
- -Dependency on AgentKey's aggregation layer adds a potential single point of failure for data access.
- -Credit-based pricing may be less predictable than flat-rate API subscriptions for heavy users.
Key features
Katzilla
The data backbone for AI agents, providing trusted government data with built-in citation.
Strengths
- +Ensures high trustworthiness and reduces AI hallucinations with primary source citations.
- +Consolidates a vast array of government data behind a single, easy-to-use API.
- +Offers specialized tools for comprehensive data access, including web scraping and monitoring.
- +Supports critical applications where accuracy and verifiable sources are paramount.
- +Provides a generous free tier for evaluation and prototyping.
Weaknesses
- -Primarily focused on US government data, which may limit utility for international-only applications.
- -Higher usage tiers can become costly for very large-scale operations.
- -Reliance on API for core functionality means developers need to integrate it into their agents.
Key features
Pricing: AgentKey vs Katzilla
| Plan | AgentKey | Katzilla |
|---|---|---|
| Tier 1 | N/A | $0 Free |
| Tier 2 | N/A | $49/mo Pro |
| Tier 3 | N/A | $199/mo Business |
| Tier 4 | N/A | $499/mo Starter |
| Tier 5 | N/A | $1,499/mo Growth |
| Tier 6 | N/A | $4,999/mo Scale |
Pricing verified from each vendor's public pricing page. Compare in detail on AgentKey pricing and Katzilla pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: AgentKey
Want the highest-rated option?
Neither has ratings yet.
Too early to call on ratings — compare on features and pricing.
Value user reviews?
Neither has ratings yet.
Too early to call — neither has ratings yet.
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
AgentKey is a API tools tool. Katzilla is in AI agents. Pick the category that matches your needs.
How important are ratings?
Neither has ratings yet.
Key Takeaways
Katzilla
- Free tier available
- Our pick for this comparison
AgentKey
- Better fit for API tools
The Bottom Line
Katzilla is our pick.
Frequently Asked Questions
Is AgentKey or Katzilla better?
Katzilla is rated in our evaluation. Both are freemium.
What are AgentKey and Katzilla used for?
AgentKey: Unified API access to 1,800+ live data sources for AI agents. Katzilla: The data backbone for AI agents, providing trusted government data with built-in citation..
What does AgentKey cost vs Katzilla?
AgentKey is freemium (free tier + paid plans). Katzilla is freemium (free tier + paid plans). Visit their websites for detailed pricing.