Sonar Small Online API pricing
Sonar Small Online from Perplexity costs $0.20 per 1M input tokens and $0.20 per 1M output tokens.
That puts it 11th cheapest of the 60 models tracked here on a blended 3:1 input-to-output rate, or $0.200 per 1M blended tokens. Verified 2026-08-16.
- Input
- $0.20per 1M tokens
- Output
- $0.20per 1M tokens
- Cached input
- None not published
- Batch discount
- None not published
- Price rank
- #11of 60, cheapest first
- Tokens per $1
- 5,000,000at a 3:1 mix
What Sonar Small Online costs on a real workload
Per-million-token rates are hard to reason about, so here is the same model priced against four concrete monthly workloads. Each row uses this model's own input and output rates against a fixed token mix, with no caching or batch discount applied.
| Workload | Assumption | Monthly cost | Annual |
|---|---|---|---|
| Support chatbot | 50,000 conversations/month at 3K input and 500 output tokens each | $35.00 | $420.00 |
| RAG document search | 200,000 queries/month at 6K retrieved-context input and 400 output tokens | $256.00 | $3,072 |
| Coding agent | 5,000 runs/month at 60K input and 8K output tokens per run | $68.00 | $816.00 |
| Bulk classification | 5,000,000 items/month at 400 input and 20 output tokens each | $420.00 | $5,040 |
Your mix will differ. The API cost calculator takes your own token counts, and the cost per request calculator scales a single call up to per-1,000 and per-month totals.
Cheaper alternatives to Sonar Small Online
These are the closest cheaper options from other providers, ordered by how near they sit to Sonar Small Online on the blended rate. Closer is usually a more realistic swap: the further down this list you go, the more capability you are likely trading away.
| Model | Provider | Input / 1M | Output / 1M | Cheaper by |
|---|---|---|---|---|
| DeepSeek V4 Flash | DeepSeek | $0.14 | $0.28 | 1.1x |
| Gemini 2.5 Flash-Lite | $0.10 | $0.40 | 1.1x | |
| GPT-4.1 nano | OpenAI | $0.10 | $0.40 | 1.1x |
| Step 3.5 Flash | StepFun | $0.10 | $0.30 | 1.3x |
| Llama 4 Scout | Meta | $0.08 | $0.30 | 1.5x |
Before switching, price the move properly: the model switching savings calculator puts two models against the same workload and shows the annual difference.
Models priced near Sonar Small Online
If cost is roughly fixed and you are choosing on capability instead, these are the models sitting closest to Sonar Small Online on price.
| Model | Provider | Input / 1M | Output / 1M | Blended |
|---|---|---|---|---|
| GPT-4.1 nano | OpenAI | $0.10 | $0.40 | $0.175 |
| Gemini 2.5 Flash-Lite | $0.10 | $0.40 | $0.175 | |
| DeepSeek V4 Flash | DeepSeek | $0.14 | $0.28 | $0.175 |
| Step 3.5 Flash | StepFun | $0.10 | $0.30 | $0.150 |
About Perplexity
Perplexity's Sonar models are search-grounded, which means token rates tell only half the story: per-request search fees are a real part of the bill.
See every Perplexity model and how the lineup is tiered on the Perplexity pricing page, or put Sonar Small Online against all 60 models from all 17 providers on the comparison table.
Sonar Small Online pricing FAQ
How much does Sonar Small Online cost per 1M tokens?
Sonar Small Online costs $0.20 per 1M input tokens and $0.20 per 1M output tokens. There is no published cached-input rate for this model.
Is Sonar Small Online expensive compared to other models?
It ranks 11 of 60 on a blended rate that weights input and output 3:1, so 10 tracked models are cheaper and 49 are more expensive. That works out to 3.6x the blended rate of Qwen3.7 Flash, the cheapest model tracked here.
What does a real workload cost on Sonar Small Online?
A support chatbot handling 50,000 conversations a month at 3K input and 500 output tokens each comes to about $35.00 a month. A coding agent doing 5,000 runs at 60K input and 8K output per run comes to about $68.00. Run your own numbers in the API cost calculator.
Why is Sonar Small Online output more expensive than input?
Output on this model is 1.0x the input rate. Every output token needs its own forward pass through the model, while input tokens are processed in parallel, so output costs more to serve across essentially every provider. It also means a workload's input:output mix, not just its total token count, drives the bill.
What is a cheaper alternative to Sonar Small Online?
DeepSeek V4 Flash from DeepSeek is the closest cheaper option at $0.14 / $0.28, roughly 1.1x cheaper on a blended basis. Whether it is a real substitute depends on whether your task actually needs the extra capability.