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Perplexity: sonar:free
sonar:free
128K context128K outWeb search
Released Jan 27, 2025Updated Jun 20, 2026
Sonar is lightweight, affordable, fast, and simple to use — now featuring citations and the ability to customize sources. It is designed for companies seeking to integrate lightweight question-and-answer features optimized for speed.
Mode chatTokenizer Other
All providers for this model are busy right now
Every upstream provider has hit its rate limit. The model comes back automatically once limits lift, usually within hours. Try again in a little while or switch to another model.
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Input price
$0.00/ 1M tokens
Output price
$0.00/ 1M tokens
Context window 128K tokensCompatible endpoints openaiVendor Perplexity
Uptime
Performance
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Usage & Ranking
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Supported parameters
All providers = every upstream serving this model supports it. Some providers = depends on which upstream handles the request. Default = the value sent when you leave the parameter unset.
| Parameter | Providers | Default |
|---|---|---|
| frequency_penalty | All providers | - |
| max_tokens | All providers | - |
| presence_penalty | All providers | - |
| temperature | All providers | - |
| top_k | All providers | - |
| top_p | All providers | - |
| web_search_options | All providers | - |