# Sonar Pro

> Perplexity's pro web-search model. Deeper multi-step search, 200K context, longer cited answers. Per-request search fee on top of tokens.

Human version: https://kymaapi.com/models/sonar-pro
Live JSON: `GET https://kymaapi.com/v1/models` (no auth required)

## Facts

- **Model ID**: `sonar-pro` — pass this as `model` in the request body
- **Creator**: Perplexity
- **Released**: 2025-02-19
- **Context window**: 200K tokens
- **Max output**: 8K tokens per response — a hard ceiling, not a default
- **Price**: $4.05 in / $20.25 out per 1M, cached input 10%
- **Capabilities**: vision, caching

## Call it

```bash
curl https://kymaapi.com/v1/chat/completions \
  -H "Authorization: Bearer $KYMA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "sonar-pro", "messages": [{"role": "user", "content": "Hello"}]}'
```

## Positioning

Sonar Pro is a web-search model built for deep, multi-step research and generating longer, cited reports. Reach for it when you need answers grounded in live web data rather than static training knowledge.

## About

Sonar Pro integrates live search directly into its generation pipeline. It performs multi-step queries to retrieve current information and returns detailed answers with explicit citations. The model accepts text and image inputs and outputs text only.

On Kyma, it runs with a 200,000-token context window and an 8,000-token maximum output. It does not support function calling, structured outputs, or reasoning traces, and it operates at a medium speed tier. It is classified as a premium tier model, and each request incurs a per-request search fee on top of standard token costs.

Kyma handles routing with automatic failover and includes exact request costs in the usage.cost field. Prompt caching is supported, and cached input prefixes are billed at 10% of the standard input rate. The X-Kyma-Model header confirms the active model for every response.

## Use cases

- **Deep web research** — Query complex topics and retrieve synthesized answers grounded in live sources.
- **Current events analysis** — Track recent developments and generate summaries based on up-to-date reporting.
- **Long-form cited reports** — Draft detailed documents with inline citations and multi-step information gathering.
- **Image-assisted research** — Analyze uploaded images alongside live web queries to contextualize visual data.

## Not ideal for

Do not use this model for low-latency conversational chat, function calling, or tasks requiring strict JSON formatting.

## Pick something else when

- You need function calling or tool use → `gpt-5.6-terra`, `qwen-3.7-max`
- You need fast, low-cost conversational responses → `gemini-3.5-flash-lite`, `deepseek-v4-flash`
- You require strict JSON or structured outputs → `qwen-3.7-plus`, `gemini-3.6-flash`

## See also

- All models: https://kymaapi.com/models.md
- Pricing: https://kymaapi.com/pricing.md
- Other models by Perplexity: https://kymaapi.com/models?q=Perplexity