AI21 Labs
Advanced language models and developer platform for reasoning, writing and structured outputs with APIs tooling and enterprise controls for reliable LLM applications.
Pricing Free credits / Pay as you go
Category research
Difficulty Beginner
Type Web App
Status Active
K
Kagi
Kagi is a paid private search engine with no ads that offers fast results customization and an integrated assistant with multiple models plus lenses and privacy technologies like Privacy Pass.
Pricing Starts $5 per month
Category research
Difficulty Beginner
Type Web App
Status Active
Feature Tags Comparison
Only in AI21 Labs
llmapireasoningjsonguardrailsenterprise
Shared
None
Only in Kagi
searchprivacyassistantmodelslensesproductivity
Key Features
AI21 Labs
- • Reasoning models: Focused on multistep tasks that need planning consistency and better intermediate reasoning signals
- • Structured outputs: JSON mode function calling and extraction endpoints keep responses machine friendly
- • Grounding options: Hook models to documents or endpoints to reduce hallucinations and improve trust
- • Eval and tracing: Built in tooling to test variants measure quality and observe latency cost and failures
- • Controls and guardrails: Safety filters rate limits and sensitive content rules for responsible deployment
- • Customization: Fine-tuning and instructions to align outputs with domain style and policy constraints
Kagi
- • Ad free results with ranking you control via lenses site boosts and filters for faster trustworthy research
- • Assistant with many models selectable per thread for mixed tasks and budget control
- • Privacy Pass and onion access for anonymous requests where supported
- • Starter plan with 300 searches for light users and unlimited on Professional
- • Family and Team plans with central billing and allowances
- • No billing for months with zero use through fair pricing credits
Use Cases
AI21 Labs
- → Build assistants that return structured JSON for integrations
- → Create summarizers that cite sources and follow templates
- → Automate classification and triage workflows with high precision
- → Generate product descriptions with policy compliant phrasing
- → Design agents that call tools and functions deterministically
- → Run evaluations to compare prompts and models for quality control
Kagi
- → Academic research where forum or paper lenses speed discovery without sifting ads
- → Competitive analysis where site boosts prioritize trusted sources and docs
- → Daily browsing for professionals who want privacy speed and clean SERPs
- → Developers who need fast documentation searches across ecosystems
- → Writers who gather sources without ad clutter and trackable links
- → Students who need predictable costs and a distraction free engine
Perfect For
AI21 Labs
ML engineers platform teams data leaders and enterprises that need controllable language models tooling and governance for production features
Kagi
researchers developers writers analysts privacy conscious users and teams who want fast ad free search strong source control and an integrated assistant
Capabilities
AI21 Labs
JSON and Functions Professional
Eval and Tracing Professional
Docs and Knowledge Intermediate
Security and Policy Enterprise
Kagi
Ad Free Engine Intermediate
Multi Model Chat Intermediate
Privacy Pass Professional
Lenses and Boosts Intermediate
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