Sonar Pro
Access Sonar Pro through one API key. Search-augmented AI with citations built in.
Perplexity's premium search-augmented model. Every response includes citations and source URLs. Ideal for research, fact-checking, and grounded answers.
No credit card required. Takes 30 seconds.
2,400+
Developers
1.2M+
API calls served
100+
Endpoints
$0.01
Per call
Yep, that's it.
Try it live
Send a message and see Sonar Pro respond in real time.
Maximum tokens in the response.
Real-time tokens
Context Window
200K tokens
Max Output
8K tokens
Input Price
$4.20 / 1M tokens
Output Price
$21.00 / 1M tokens
Strengths
Perplexity's premium model answers by searching the live web first, grounding every response in current information rather than static training data.
Every response includes citations and source URLs, so answers are verifiable and traceable back to the pages they came from — built for research and fact-checking.
Pulls in up-to-the-moment information, making it suited to questions about recent events, current data, and fast-changing topics, with a 200K-token context window.
Grounding plus source attribution sharply reduces hallucination on factual queries compared with ungrounded models, with up to 8,192 output tokens.
Quick start
Copy this snippet and start making calls with Sonar Pro.
const res = await fetch('https://api.yepapi.com/v1/ai/chat', {
method: 'POST',
headers: {
'x-api-key': 'YOUR_API_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({
"model": "perplexity/sonar-pro",
"messages": [
{
"role": "user",
"content": "Explain API gateways in 2 sentences."
}
],
"maxTokens": 256
}),
});
const { data } = await res.json();
console.log(data.message.content);Why use Sonar Pro through YepAPI?
Sonar Pro API — pricing, context window & access
Sonar Pro is Perplexity's premium search-augmented model: it answers questions by searching the live web and returns citations and source URLs with every response. It carries a 200K-token context window and up to 8,192 output tokens, built for research and grounded answers.
YepAPI serves Sonar Pro over an OpenAI-compatible endpoint with one key that also reaches the cheaper Sonar, Claude, Gemini, Grok, Qwen, and Mistral, plus dedicated SEO, SERP, and web-scraping endpoints.
What is Sonar Pro?
Sonar Pro is Perplexity's premium search-augmented model. Unlike a standard chat model that answers from training data, Sonar Pro searches the live web for each query and synthesizes an answer grounded in what it finds, attaching citations and source URLs. It has a 200,000-token context window and returns up to 8,192 output tokens. Because every answer is grounded and cited, it is built for tasks where freshness and verifiability matter — research, fact-checking, and any question about current information.
Build with Sonar Pro via YepAPI
Call Sonar Pro through YepAPI's OpenAI-compatible /v1/ai/chat endpoint with the model set to sonar-pro; responses include citation data alongside the answer. Existing OpenAI SDK code works after a base-URL and model-name change. You can route fact-grounded queries to Sonar Pro and creative or coding work to Claude or Devstral with a one-string switch — and the same key also unlocks YepAPI's SEO, SERP, and scraping APIs for fuller research pipelines.
Sonar Pro API pricing — $4.20 / $21.00 per 1M tokens
Sonar Pro costs $4.20 per 1M input tokens and $21.00 per 1M output tokens on YepAPI. That premium over the standard Sonar model buys deeper, higher-quality web grounding and more thorough citations. For research and fact-checking workloads where source quality matters, the rate is reasonable; for high-volume, simpler lookups, the cheaper Sonar may fit better. Billing is per token with no minimums.
Sonar Pro for research and fact-checking
Sonar Pro is the model for grounded, citable answers: market and competitive research, due diligence, news monitoring, fact-checking generated content, and any assistant that must show its sources. Because it searches live and cites every claim, it sidesteps the staleness and hallucination problems of ungrounded models. Paired with YepAPI's SERP and scraping endpoints, it anchors research pipelines that need both reasoning and verifiable sourcing.
Try Sonar Pro free
New YepAPI accounts get $5 in free credit with no card required. It is enough to run real research queries through Sonar Pro and judge the quality of its answers and citations against your needs before paying.
Start generating in 30 seconds
$5 free credit on signup. No credit card required. Pay per call.
What developers say
“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Frequently asked questions
Perplexity's premium search-augmented model. Every response includes citations and source URLs. Ideal for research, fact-checking, and grounded answers.
Input tokens cost $4.20 per 1M tokens and output tokens cost $21.00 per 1M tokens through YepAPI. No monthly minimums — you only pay for what you use.
Sign up for a free API key, then send requests to the /v1/ai/chat endpoint.
Sonar Pro supports a 200K token context window with up to 8K output tokens per request.
Ready to use Sonar Pro?
$5 free credit on signup. No credit card required. Pay per call.
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