sonar-reasoning-pro
Sonar Reasoning Pro is Perplexity’s premier reasoning model with search, powered by DeepSeek R1 with chain-of-thought. Its price includes Perplexity search fees.
料金： 入力：100 万トークンあたり 480 クレジット（約 $2.40）、出力：100 万トークンあたり 1920 クレジット（約 $9.60）。
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Perplexity のほかの AI モデル
Sonar Reasoning Pro API on ModelFold
Sonar Reasoning Pro is Perplexity’s premier reasoning model with search, powered by DeepSeek R1 with chain-of-thought. Its price includes Perplexity search fees. Try Sonar Reasoning Pro in the ModelFold Playground, then call it from your own code through an OpenAI-compatible chat completions API.
What Is the Sonar Reasoning Pro API
Sonar Reasoning Pro at a glance
Sonar Reasoning Pro is a chat model from Perplexity. It accepts text and images as input and returns text, with a context window of up to 128K tokens.
Use it without hosting anything
On ModelFold you call Sonar Reasoning Pro with a single API key — no model weights to download and no inference servers to run. The same key also works for the other chat, image, video and audio models on ModelFold.
Core Capabilities of Sonar Reasoning Pro
Up to 128K tokens of context
Keep long conversations, large documents and sizeable code in a single request, so the model can reason over the full material instead of fragments.
Understands images
Besides text, Sonar Reasoning Pro accepts images as input, so a single request can combine instructions with visual or other media.
Reasoning mode
Sonar Reasoning Pro can produce reasoning before its final answer; in the Playground you can switch reasoning on or off to compare results.
How to Use Sonar Reasoning Pro on ModelFold
- 1
Step 1: Try it in the Playground
Open the Playground at the top of this page, type a prompt and see how Sonar Reasoning Pro responds before writing any code.
- 2
Step 2: Create an API key
Sign in to ModelFold and create an API key in the console. Keep it secret and send it as a Bearer token.
- 3
Step 3: Send a request
Call POST https://modelfold.ai/v1/chat/completions with "model": "sonar-reasoning-pro" and your messages. Existing OpenAI-compatible SDKs work by changing the base URL and key.
- ✓
Step 4: Ship and monitor
Integrate the response into your product and check token usage and spend for every call in the console logs.
What You Can Build with Sonar Reasoning Pro
Analysis and complex reasoning
Work through research questions, data interpretation, planning and other problems that need careful step-by-step reasoning.
Long-document workflows
Feed in long reports, contracts, manuals or codebases and ask for summaries, comparisons and answers grounded in the material.
Enterprise workflows
Automate internal processes such as reporting, knowledge-base Q&A, ticket handling and document review.
Frequently Asked Questions
What is Sonar Reasoning Pro?⌄
Sonar Reasoning Pro is Perplexity’s premier reasoning model with search, powered by DeepSeek R1 with chain-of-thought. Its price includes Perplexity search fees.
Which inputs does Sonar Reasoning Pro support?⌄
Sonar Reasoning Pro accepts text and images and returns text. Through ModelFold you can send text and images (OpenAI-style image_url content); in the Playground you can also attach documents, which are converted to text.
How long is the context window of Sonar Reasoning Pro?⌄
Up to 128K tokens, shared between your input and the model’s output.
Does Sonar Reasoning Pro support function calling?⌄
Function calling is not listed for Sonar Reasoning Pro; requests that include tools will be rejected. Use plain prompts or JSON output instead.
How is Sonar Reasoning Pro billed on ModelFold?⌄
Pay as you go by tokens: input and output tokens are charged at the per-million-token prices shown on this page. There is no monthly fee, and failed requests are not charged.
How do I call Sonar Reasoning Pro through the API?⌄
Send a POST request to https://modelfold.ai/v1/chat/completions with "model": "sonar-reasoning-pro", using your ModelFold API key as the Bearer token.
| 入力 | 480 クレジット 1M tokens≈ $2.40 |
| 出力 | 1920 クレジット 1M tokens≈ $9.60 |
トークン単位で課金し、入力と出力は別料金です。思考トークンは出力に含まれます。Playground でも同じ計算を使います。
API ドキュメントを見る →AI Agents · Claude Code / Cursor / Trae →curl https://modelfold.ai/v1/chat/completions \
-H "Authorization: Bearer $MODELFOLD_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"sonar-reasoning-pro","messages":[{"role":"user","content":"Hello"}]}'