Sonar Reasoning Pro vs Gemini 3.5 Flash
74.6 overall · $3.38 / 1M
// perplexity
Sonar Reasoning Pro
perplexity/sonar-reasoning-pro
reasoningimage input
Sonar Reasoning Pro costs $2.00 per 1M input tokens and $8.00 per 1M output tokens with a 128K-token context window.
A reasoning model from perplexity, released Mar 7, 2025. LiveBench hasn't published a run for it, so this page carries measured price and specs only — no benchmark numbers.
- Input / 1M
- $2.00
- Output / 1M
- $8.00
- Context
- 128K
- LiveBench overall
- Not evaluated
Specs and pricing
| Input price USD per 1M prompt tokens | $2.00 |
|---|---|
| Output price USD per 1M completion tokens, reasoning included | $8.00 |
| Blended price 3:1 input:output — #60 most expensive of 343 listed models | $3.50 |
| Cached input read Blank means not priced separately — not free | — |
| Cache write | — |
| Context window | 128,000 tokens |
| Max output | 115,200 tokens |
| Input modalities | text, image |
| Tool calling | No |
| Extended reasoning | Yes |
| Knowledge cutoff | — |
| Listed | Mar 7, 2025 |
What Sonar Reasoning Pro costs to run
Monthly list cost across five workload shapes, using the published cached-input rate where there is one. A floor, not a quote — batch discounts and cache writes aren't included.
| Workload | Per month |
|---|---|
| Support chatbot 1.2K in / 400 out × 200K requests | $1,120/mo |
| RAG assistant 8K in / 600 out × 100K requests | $2,080/mo |
| Coding agent 40K in / 4K out × 20K requests | $2,240/mo |
| Document extraction 20K in / 1.5K out × 50K requests | $2,600/mo |
| Bulk classification 500 in / 20 out × 5M requests | $5,800/mo |
Compare Sonar Reasoning Pro with
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Sonar Reasoning Pro vs Claude Sonnet 5
76.0 overall · $4.00 / 1M
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Sonar Reasoning Pro vs SpaceXAI: Grok 4.6
78.0 overall · $3.00 / 1M
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Sonar Reasoning Pro vs SpaceXAI: Grok 4.5
75.8 overall · $3.00 / 1M
Sonar Reasoning Pro FAQ
How much does Sonar Reasoning Pro cost?
Sonar Reasoning Pro lists at $2.00 per 1M input tokens and $8.00 per 1M output tokens. A RAG assistant handling 100K requests a month (8K tokens in, 600 out) comes to about $2,080 at list price.
What is the context window of Sonar Reasoning Pro?
Sonar Reasoning Pro accepts up to 128,000 tokens of context and can return up to 115,200 output tokens per response.
Does Sonar Reasoning Pro support tool calling?
Sonar Reasoning Pro does not list tool (function) calling support and exposes extended reasoning. It accepts text, image input.
How does Sonar Reasoning Pro score on benchmarks?
LiveBench has not published a run for Sonar Reasoning Pro yet. Until it does, compare it on price and specs, or run your own evaluation on your own tasks.
What is the API model ID for Sonar Reasoning Pro?
On OpenRouter the model ID is "perplexity/sonar-reasoning-pro". It was listed on Mar 7, 2025.
More from perplexity
How these numbers are produced
- Price and specs — provider list data from OpenRouter, refreshed every 15 minutes. “Blended” is a 3:1 input:output mix.
- Scores and ranks — LiveBench release 2026-06-25. Ranks count only models that have a published run; a blank means “not evaluated”, never “bad”.
- Cost per point — the measured dollars LiveBench spent on the run, divided by the score it earned.
Published benchmarks rank models on someone else's tasks. Before committing, see LLM & agent evaluation for building an eval on your own.