Side-by-side comparison
Sonar Reasoning Pro vs o3
Perplexity
Sonar Reasoning Pro
👁 Vision
Input / 1M
$2.0000
Output / 1M
$8.0000
| Sonar Reasoning Pro | o3 | |
|---|---|---|
| Provider | Perplexity | OpenAI |
| Context window Maximum tokens (input + output) the model can process in a single request. Glossary → | 128,000 | 200,000 |
| Capabilities Optional capabilities the model advertises: vision (images), tools (function calling), json_mode (structured output). | vision | vision, tools, json_mode |
| Input $ / 1M tokens Cost for tokens you send (prompt + context). Cheaper side highlighted. Glossary → | 2.0000 | 2.0000 |
| Output $ / 1M tokens Cost for tokens the model generates. Output is normally 3–5× pricier than input. Glossary → | 8.0000 | 8.0000 |
Frequently asked questions
Which is cheaper, Sonar Reasoning Pro or o3?
Sonar Reasoning Pro is cheaper than o3 on a 50/50 input/output blend by about $0 per 1M tokens. Exact savings depend on your input-vs-output ratio — use the cost calculator on this page for a workload-specific estimate.
Which has a larger context window, Sonar Reasoning Pro or o3?
o3 has the larger context window at 200k tokens versus 128k tokens for Sonar Reasoning Pro. That means o3 can ingest about 1.6x as much text per request.
What is the difference between Sonar Reasoning Pro and o3?
Sonar Reasoning Pro comes from Perplexity; o3 comes from OpenAI. They differ in pricing, context window, and supported capabilities — see the side-by-side table on this page for the exact figures, refreshed nightly.