The Perplexity API gives developers programmatic access to Perplexity's search-augmented language models, enabling applications to query real-time web information through an LLM-style interface. The API uses an OpenAI-compatible format for easy integration, supports model selection, and returns sourced responses with citations. It is ideal for building research assistants, factual Q&A systems, or any application requiring current information retrieval paired with natural language generation.
Perplexity API
API for building AI apps with real-time web search.
Best for: Developers building AI applications that need up-to-date information and web search without integrating a separate search API.
- Free plan
- From $0.2 / 1M tokens
4.5/5 ratingEditorial score 87/100docs.perplexity.ai
Starts at
From $0.2 / 1M tokens
Get started free
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Editorial score87/100
The editorial note
What to know about Perplexity API
Is it right for you?
Who Perplexity API suits
Choose it if
- Developers building AI applications that need up-to-date information and web search without integrating a separate search API.
Look elsewhere if
- Applications needing advanced reasoning, code generation, or creative writing — OpenAI or Anthropic APIs provide better quality models for those use cases
What you get
Key features
- OpenAI-compatible REST API
- Real-time web search responses
- Citation support in outputs
- Sonar model family
- Streaming support
- Structured output support
- Conversation history
- Multiple search focus modes
Works with
Integrations6
What it costs
Pricing
| Plan | Price | What it includes |
|---|---|---|
| Pay-as-you-go | From $0.2 / 1M tokensBilled monthly | Sonar (online) $1/1M tokens, Sonar Pro $3/1M tokens — real-time web search API |
Prices are recorded from the vendor's public pricing page and can change. Check before you buy.
The trade-off
Pros and cons
Pros
- OpenAI-compatible API format reduces integration friction for existing OpenAI users
- Returns citations with responses enabling downstream source verification in applications
- Real-time web search capabilities without building a custom RAG pipeline
- Multiple model options including sonar-small and sonar-large for cost vs. quality tradeoffs
- Pay-per-use pricing with no monthly minimums for low-volume use cases
Cons
- Less versatile than OpenAI API for non-search tasks like code generation and creative writing
- Smaller model lineup compared to OpenAI and Anthropic APIs
- Limited fine-tuning options — cannot customize models on your own dataset
- Rate limits and latency can vary during peak usage periods
Quick read
At a glance
- Category
- Development & Coding
- Pricing model
- Freemium
- Entry plan
- From $0.2 / 1M tokens
- Free plan
- Available
- Free trial
- Not listed
- Website
- docs.perplexity.ai
The verdict
Our take on Perplexity API
The best API for real-time web search — current information in API responses without building a separate search integration.
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