AI model comparison
Sonar Reasoning Pro vs Sonar Pro
Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.
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).
- Input / 1M
- $2
- Output / 1M
- $8
- Context
- 128K
Perplexity
Sonar Pro
Note: Sonar Pro pricing includes Perplexity search pricing.
- Input / 1M
- $3
- Output / 1M
- $15
- Context
- 200K
At a glance
Quick verdict
How the two models stack up on the things people ask about most.
Lower price
Sonar Reasoning Pro
1.7x cheaper for a typical chat
Higher intelligence score
Sonar Reasoning Pro
11.8 vs 7.6 on Artificial Analysis
Larger context window
Sonar Pro
200K vs 128K tokens
Newer release
Sonar Reasoning Pro
Released March 7, 2025
Benchmarks
Benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
Sonar Reasoning Pro11.8Sonar Pro7.6Coding index
Sonar Reasoning ProNot availableSonar ProNot availableAgentic index
Sonar Reasoning ProNot availableSonar ProNot availablePricing
Sonar Reasoning Pro vs Sonar Pro API pricing
Per-token API rates. Cheaper option highlighted.
| Metric | Sonar Reasoning Pro | Sonar Pro |
|---|---|---|
| Input tokensPer 1M tokens | $2 | $3 |
| Output tokensPer 1M tokens | $8 | $15 |
| Cached input (read)Per 1M tokens | Not available | Not available |
| Cache writePer 1M tokens | Not available | Not available |
| Web searchPer request | $0.005 | $0.005 |
What it costs in practice
Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.
Chat message
2K in, 500 out
Sonar Reasoning Pro$8Sonar Pro$13.50Coding task
30K in, 4K out
Sonar Reasoning Pro$92Sonar Pro$150Long document summary
150K in, 2K out
Sonar Reasoning Pro$316Sonar Pro$480Specs
Context window and capabilities
How much each model can read, how much it can write, and what it accepts as input.
| Metric | Sonar Reasoning Pro | Sonar Pro |
|---|---|---|
| Context window | 128K tokens | 200K tokens |
| Max output | 115K tokens | 8K tokens |
| Input types | Image, Text | Image, Text |
| Output types | Text | Text |
| Reasoning effort levels | Not available | Not available |
| Default reasoning effort | Not available | Not available |
| Release date | March 7, 2025 | March 7, 2025 |
Features
Supported features
API features available for each model.
| Metric | Sonar Reasoning Pro | Sonar Pro |
|---|---|---|
| Tool calling | Not supported | Not supported |
| Structured outputs | Not supported | Not supported |
| JSON mode | Not supported | Not supported |
| Reasoning | Supported | Not supported |
| Temperature | Supported | Supported |
| Stop sequences | Not supported | Not supported |
| Deterministic seed | Not supported | Not supported |
| Verbosity control | Not supported | Not supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
Sonar Reasoning ProView full model details- Sonar Reasoning Pro vs Claude Haiku 4.5
- Sonar Reasoning Pro vs Gemini 2.5 Pro
- Sonar Reasoning Pro vs Mistral Medium 3.5
- Sonar Reasoning Pro vs Command A
- Sonar Reasoning Pro vs GPT-4.1
- Sonar Reasoning Pro vs Qwen3 235B A22B Thinking 2507
- Sonar Reasoning Pro vs o3 Mini
- Sonar Reasoning Pro vs o3 Mini High
- Sonar Reasoning Pro vs Nova Premier 1.0
- Sonar Reasoning Pro vs GPT-4o (2024-11-20)
Our take
Sonar Reasoning Pro is 1.7x cheaper for a typical chat. Sonar Reasoning Pro scores higher on the Artificial Analysis Intelligence Index (11.8 vs 7.6). Sonar Pro has the larger context window (200K vs 128K tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.
FAQ
Frequently asked questions
Is Sonar Reasoning Pro or Sonar Pro cheaper?
Sonar Reasoning Pro is cheaper for a typical chat (2K input tokens and 500 output tokens). Sonar Reasoning Pro costs $2 per 1M input tokens and $8 per 1M output tokens, while Sonar Pro costs $3 per 1M input tokens and $15 per 1M output tokens.
Which has a bigger context window, Sonar Reasoning Pro or Sonar Pro?
Sonar Pro supports up to 200K tokens of context, compared with 128K for Sonar Reasoning Pro.
Is Sonar Reasoning Pro smarter than Sonar Pro?
On the Artificial Analysis Intelligence Index, Sonar Reasoning Pro scores 11.8 and Sonar Pro scores 7.6, putting Sonar Reasoning Pro ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.
Can I use Sonar Reasoning Pro and Sonar Pro at the same time?
Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Sonar Reasoning Pro and Sonar Pro answer side by side and keep the better response.
Why choose? Ask both.
Send one prompt to Sonar Reasoning Pro and Sonar Pro at the same time. Compare the answers side by side and keep the best one.