AgentKey vs Katzilla: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for AgentKey and Katzilla side by side. This page compares data; it is not a hands-on review.
On the data: On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
AgentKey
Unified API access to 1,800+ live data sources for AI agents
Best for you if:
- • You want eliminates the need to manage multiple API keys, quotas, and bills from different providers
Katzilla
The data backbone for AI agents, providing trusted government data with built-in citation.
Best for you if:
- • You want ensures high trustworthiness and reduces AI hallucinations with primary source citations
| At a Glance | AgentKey | Katzilla |
|---|---|---|
Starts at | Free plan | Free plan, paid from $49/mo, billed monthly Pro plan |
Category | AI Agents API Tools | AI Agents API Tools |
Rating | n/a | n/a |
Free plan | Yes | Yes |
Watch out for | Overage charges if usage exceeds limit | Overage fees apply on Pro and Business plans |
Choose AgentKey or Katzilla?
Choose AgentKey if
- You want eliminates the need to manage multiple API keys, quotas, and bills from different providers
- You want broad coverage of data sources including niche Chinese platforms like Douyin, WeChat, and Zhihu
Choose Katzilla if
- You want ensures high trustworthiness and reduces AI hallucinations with primary source citations
- You want consolidates a vast array of government data behind a single, easy-to-use API
In-Depth Analysis
AgentKey
Unified API access to 1,800+ live data sources for AI agents
Watch out
Overage charges if usage exceeds limit
Strengths
- Pro: Eliminates the need to manage multiple API keys, quotas, and bills from different providers.
- Pro: Broad coverage of data sources including niche Chinese platforms like Douyin, WeChat, and Zhihu.
- Pro: Simple one-command setup and single MCP integration for any compatible AI agent.
Weaknesses
- Con: Dependency on AgentKey's aggregation layer adds a potential single point of failure for data access.
- Con: 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.
Katzilla offers a generous Free tier for basic exploration.
Watch out
Overage fees apply on Pro and Business plans
Strengths
- Pro: Ensures high trustworthiness and reduces AI hallucinations with primary source citations.
- Pro: Consolidates a vast array of government data behind a single, easy-to-use API.
- Pro: Offers specialized tools for comprehensive data access, including web scraping and monitoring.
- Pro: Supports critical applications where accuracy and verifiable sources are paramount.
- Pro: Provides a generous free tier for evaluation and prototyping.
Weaknesses
- Con: Primarily focused on US government data, which may limit utility for international-only applications.
- Con: Higher usage tiers can become costly for very large-scale operations.
- Con: Reliance on API for core functionality means developers need to integrate it into their agents.
Key features
Plans and prices: AgentKey vs Katzilla
| Tool | Plans and prices | Source |
|---|---|---|
| AgentKey | No plan prices on file | agentkey.app/pricing read Oct 3, 2026 |
| Katzilla |
| katzilla.dev/pricing read Oct 18, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on AgentKey pricing and Katzilla pricing.
Key Takeaways
AgentKey
- Choose if you want unified API access to 1,800+ live data sources for AI agents
Katzilla
- Choose if you want the data backbone for AI agents, providing trusted government data with built-in citation
What the data shows
On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
- Katzilla starts at $49/mo, billed monthly; AgentKey has no public paid plan price on file.
- Both have a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do AgentKey and Katzilla compare in 2026?
On the data below the two are close or not directly comparable, so we do not name a winner for this pair. Katzilla starts at $49/mo, billed monthly; AgentKey has no public paid plan price on file. Both have a free plan.
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 has no public paid-plan price on file. Katzilla's cheapest paid plan is Pro at $49/mo, billed monthly; it also has a free plan. Prices read on the vendors' pricing pages, latest check Oct 18, 2026.
What's the main difference between AgentKey and Katzilla?
AgentKey's main strength: eliminates the need to manage multiple API keys, quotas, and bills from different providers. Katzilla's main strength: ensures high trustworthiness and reduces AI hallucinations with primary source citations.