Sonar Reasoning Pro

Ask a question that has to be worked through, not just looked up, and get a step-by-step answer backed by web search.

POST https://api.aisa.one/apis/v1/perplexity/sonar-reasoning-pro

Sonar Reasoning Pro — chain-of-thought reasoning with search

cURL

curl --request POST \
  --url https://api.aisa.one/apis/v1/perplexity/sonar-reasoning-pro \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "sonar-reasoning-pro",
  "messages": [
    {
      "role": "user",
      "content": "Analyze whether Tesla stock is overvalued based on current P/E ratio compared to industry averages"
    }
  ]
}
'

200

{
  "id": "<string>",
  "model": "<string>",
  "object": "chat.completion",
  "created": 123,
  "choices": [
    {
      "index": 123,
      "message": {
        "role": "<string>",
        "content": "<string>"
      },
      "finish_reason": "stop"
    }
  ],
  "citations": [
    "<string>"
  ],
  "search_results": [
    {
      "title": "<string>",
      "url": "<string>",
      "snippet": "<string>",
      "date": "<string>",
      "source": "<string>"
    }
  ],
  "usage": {
    "prompt_tokens": 123,
    "completion_tokens": 123,
    "total_tokens": 123,
    "search_context_size": "<string>"
  }
}

Ask a question that has to be worked through, not just looked up, and get a step-by-step answer backed by web search. Same shape as the other Perplexity endpoints — model (required, sonar-reasoning-pro) and messages in; choices[0].message.content, citations, search_results[] and usage out. Measured at about 5 seconds, flat $0.012 per request. Use it for comparison, causation and analysis. When the question is simply what is the case, post_perplexity_sonar is faster; when you need a long report over many sources rather than an answer, post_perplexity_sonar_deep_research.

Example

curl -X POST "https://api.aisa.one/apis/v1/perplexity/sonar-reasoning-pro" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "sonar-reasoning-pro",
    "messages": [
      {"role": "user", "content": "Analyze whether Tesla stock is overvalued based on current P/E ratio compared to industry averages"}
    ]
  }'

Authorizations

Authorization · string · header · required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json

model · enum<string> · required

The Sonar model to use.

Available options: sonar, sonar-pro, sonar-reasoning-pro, sonar-deep-research

messages · object[] · required

A list of messages comprising the conversation so far.

Show child attributes

max_tokens · integer

The maximum number of tokens to generate in the response.

temperature · number · default: 0.2

Sampling temperature between 0 and 2. Lower values make output more focused and deterministic.

Required range: 0 <= x <= 2

top_p · number · default: 0.9

Nucleus sampling parameter. The model considers tokens with top_p probability mass.

Required range: 0 <= x <= 1

top_k · integer · default: 0

The number of tokens to keep for top-k filtering.

Required range: 0 <= x <= 2048

stream · boolean · default: false

Whether to stream the response using server-sent events.

search_context · enum<string> · default: low

Controls how much search context to use. Affects per-request cost.

Available options: low, medium, high

frequency_penalty · number · default: 1

Penalizes new tokens based on their existing frequency in the text so far. Positive values decrease the likelihood of repeating the same line verbatim.

Required range: 0 <= x <= 2

presence_penalty · number · default: 0

Penalizes new tokens based on whether they appear in the text so far. Positive values increase the likelihood of talking about new topics.

Required range: -2 <= x <= 2

return_citations · boolean · default: true

Whether to return citations and search results in the response.

search_recency_filter · enum<string>

Filter search results by recency.

Available options: month, week, day, hour

search_domain_filter · string[]

Limit search to specific domains.

Response

200 - application/json

Successful response with AI answer and citations

id · string

Unique identifier for the completion.

model · string

The model used for the completion.

object · string

Example:

"chat.completion"

created · integer

Unix timestamp of when the completion was created.

choices · object[]

Show child attributes

citations · string[]

List of source URLs referenced in the answer.

search_results · object[]

Detailed search results with titles, snippets, and URLs.

Show child attributes

usage · object

Show child attributes