Sonar Reasoning Pro vs Step 3.7 Flash
Cost and capability comparison. For a sample workload of 1,000 input and 500 output tokens across 100,000 requests/month, Step 3.7 Flash is cheaper by about $526.00/month.
| Sonar Reasoning Pro | Step 3.7 Flash | |
|---|---|---|
| Provider | perplexity | stepfun |
| Input / 1M | $2.00 | $0.1850 |
| Output / 1M | $8.00 | $1.11 |
| Per request (sample) | $0.00600 | $0.000740 |
| Monthly (sample) | $600.00 | $74.00 |
| Context window | 128,000 | 256,000 |
| Vision | No | No |
| Reasoning | Yes | Yes |
Compare on your own workload
Sonar Reasoning Pro and Step 3.7 Flash are pre-loaded. Adjust the tokens and monthly volume to see which is cheaper for your usage.
Used unless you set active users below.
Results update automatically as you type.
Result
Cheapest: Step 3.7 Flash at $74.00/month
Workload: 1,000 in / 500 out × 100,000 requests/month
| Step 3.7 Flash | StepFun | $0.000740 | $74.00 | $888.00 | 256,000 |
| Sonar Reasoning Pro | Perplexity | $0.00600 | $600.00 | $7,200.00 | 128,000 |
FAQ
Which is cheaper, Sonar Reasoning Pro or Step 3.7 Flash?
For a workload of 1,000 input and 500 output tokens over 100,000 requests/month, Step 3.7 Flash is cheaper, costing about $74.00/month versus $600.00/month.
What is the context window of Sonar Reasoning Pro and Step 3.7 Flash?
Sonar Reasoning Pro supports 128,000 tokens, while Step 3.7 Flash supports 256,000 tokens.
Estimates for planning only. Verify current pricing with each provider.