Perplexity
Sonar Reasoning Pro
Note: Sonar Pro pricing includes Perplexity search pricing. See [details here](https://docs.perplexity.ai/guides/pricing#detailed-pricing-breakdown-for-sonar-reasoning-pro-and-sonar-pro) Sonar Reasoning Pro is a premier reasoning model powered by DeepSeek R1 with Chain of Thought (CoT).
At a glance
- Input / 1M
- $2
- Output / 1M
- $8
- Context
- 128K
- Max output
- 115K
- Intelligence
- 11.8
- Released
- Mar 2025
Pricing
Sonar Reasoning Pro API pricing
Per-token rates, plus what common tasks actually cost.
| Input tokensPer 1M tokens | $2 |
|---|---|
| Output tokensPer 1M tokens | $8 |
| Cached input (read)Per 1M tokens | Not available |
| Cache writePer 1M tokens | Not available |
| Web searchPer request | $0.005 |
Chat message
2K in, 500 out
$8
per 1,000 requests
Coding task
30K in, 4K out
$92
per 1,000 requests
Long document summary
150K in, 2K out
$316
per 1,000 requests
Benchmarks
Sonar Reasoning Pro benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
11.8
Coding index
Not available
Agentic index
Not available
Specs
Context window and capabilities
What it can read, what it can write, and which API features it supports.
- Context window
- 128K tokens
- Max output
- 115K tokens
- Input types
- Image, Text
- Output types
- Text
- Reasoning effort
- Not available
- Release date
- March 7, 2025
- Tool calling
- Structured outputs
- JSON mode
- Reasoning
- Temperature
- Stop sequences
- Deterministic seed
- Verbosity control
Compare
Sonar Reasoning Pro vs other models
See how Sonar Reasoning Pro stacks up head to head on price, benchmarks, and features.
VS
Sonar Reasoning Pro vs Claude Haiku 4.5
Perplexity vs Anthropic
See comparisonVS
Sonar Reasoning Pro vs Gemini 2.5 Pro
Perplexity vs Google
See comparisonVS
Sonar Reasoning Pro vs Mistral Medium 3.5
Perplexity vs Mistral
See comparisonVS
Sonar Reasoning Pro vs Command A
Perplexity vs Cohere
See comparisonVS
Sonar Reasoning Pro vs GPT-4.1
Perplexity vs OpenAI
See comparisonVS
Sonar Reasoning Pro vs Qwen3 235B A22B Thinking 2507
Perplexity vs Qwen
See comparisonAlternatives
Sonar Reasoning Pro alternatives
Similar models worth considering, and where each one has the edge.
Anthropic
Claude Haiku 4.5
Gemini 2.5 Pro
Mistral
Mistral Medium 3.5
Want to learn about other models? Browse all models
FAQ
Frequently asked questions
How much does Sonar Reasoning Pro cost?
Sonar Reasoning Pro costs $2 per 1M input tokens and $8 per 1M output tokens through the API. A typical chat message costs about $8 per 1,000 messages.
What is the context window of Sonar Reasoning Pro?
Sonar Reasoning Pro accepts up to 128K tokens of input and can write up to 115K tokens in a single response.
What is the best alternative to Sonar Reasoning Pro?
Claude Haiku 4.5 from Anthropic is a strong alternative. It offers: 1.6x cheaper output, higher intelligence score, larger 200k context.
Can I use Sonar Reasoning Pro alongside other models?
Yes. Shortcut Chat sends one prompt to Sonar Reasoning Pro and any other models you pick at the same time, so you can compare answers side by side.
Try Sonar Reasoning Pro next to every other model.
Use Sonar Reasoning Pro alongside all the other models. Use one at a time, or multiple together. Get the best answer from every AI.