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Sonar Reasoning Pro

Perplexity · released March 2025

Sonar Reasoning Pro is a Perplexity model with a 128K token context window — about 180 pages of text. It reads Text and Images and replies in Text. It can show its reasoning before it answers.

$2.30

input / 1M tokens

$9.20

output / 1M tokens

128K

context — about 180 pages

1.9¢

a client proposal

Pricing

Input
$2.30 per million tokens
Output
$9.20 per million tokens
Web search
0.57¢ per search

Billed from your Alyph wallet. Prices can change when the provider changes theirs — last checked August 9, 2026.

The numbers

Provider
Perplexity
Released
March 2025 (2025-03-07)
Context window
128K tokens — about 180 pages
Max output
Not specified
Input
Text and Images
Output
Text
Reasoning
Shows its thinking before answering

Cost vs Token Amount

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80% Input20% Output
free$1.84$3.680 tokens250k500k750k1000k
Sonar Reasoning Pro

Adjust the ratio slider to change how output tokens influence the final price for equivalent workloads.

What a task costs

2K tokens in · 500 tokens out.

Sonar Reasoning Pro

Perplexity

0.92¢

for this task

50% input · 50% output

Full pricing →

Your $5 welcome credit covers about 543 of these.

Compare Sonar Reasoning Pro

Closest in price on a typical task:

Sonar Reasoning Pro vs GPT-4.1 →Sonar Reasoning Pro vs Jamba Large 1.7 →Sonar Reasoning Pro vs o3 →Sonar Reasoning Pro vs Sonar Deep Research →Any other combination →

Questions, answered

How much does Sonar Reasoning Pro cost on Alyph?

Sonar Reasoning Pro costs $2.30 per million input tokens and $9.20 per million output tokens on Alyph. A typical task — 5K tokens in, 800 out — works out to about 1.9¢. Billed from your Alyph wallet, with hard spending limits. Prices can change when the provider changes theirs; this page was last checked on August 9, 2026.

What is Sonar Reasoning Pro's context window?

128K tokens — about 180 pages.

Can Sonar Reasoning Pro read images and files?

Sonar Reasoning Pro reads Text and Images. Drop a file onto the canvas and it becomes part of the context — the only limit is the context window.

Does Sonar Reasoning Pro show its reasoning?

Yes. Sonar Reasoning Pro can expose its thinking before the final answer, so you can watch how it got there.

Test Sonar Reasoning Pro against GPT-4.1

One prompt, both models at the same time, the better answer wins. Free to start, with $5 of credit.

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