Web-grounded Sonar for multi-step research questions that need cited reasoning
Sonar Reasoning Pro by perplexity is offered by 7 providers on this page. Public prices are shown for 6 of them. Its official list price is $2.00 per 1M input tokens and $8.00 per 1M output tokens.
Artificial Analysis rates it 11.8 on the Intelligence Index. Against its lowest blended price of $3.50 per 1M, that is roughly 3 index points per dollar, which is the value ratio the leaderboards rank on.
The context window is 128,000 tokens at the reference host, but hosts report different limits, from 127,000 to 128,000, so the usable window depends on the provider you pick. It supports reasoning. Accepted input modalities are Text and Image. Providers report the capability flags inconsistently, so verify a specific feature against the host you plan to use. Its training knowledge cuts off at 2025-09-01.
Quality is independently evaluated by Artificial Analysis. Speed/latency are model-level medians.
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| OpenRouter | Gateway | $2.00 | $8.00 | — | — | 128,000 | 115,200 | |
| PerplexityOfficial | First-party | $2.00 | $8.00 | — | — | 128,000 | 4,096 | |
| Opper | Gateway | $2.00 | $8.00 | — | — | 128,000 | 4,096 | |
| Eden AI | Gateway | $2.00 | $8.00 | — | — | 128,000 | 4,096 | |
| Kilo Gateway | Gateway | $2.00 | $8.00 | — | — | 128,000 | 115,200 | |
| Helicone | Gateway | $2.00 | $8.00 | — | — | 127,000 ⚠ | 4,096 | |
| AnyAPI | Gateway | — | — | — | — | 128,000 | 4,096 | hostTable.undisclosed |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Interleaved thinking (reasoning between tool calls) is declared by 1 of 7 providers.
2 / 7 providers expose no reasoning control (reasoning_options: []).
Individual evaluations run by Artificial Analysis, on the same reasoning tier as the intelligence score above. Each benchmark has its own task set and harness, so rows are not comparable with one another. The Intelligence Index above draws on a different, newer set of evaluations.