Last refreshed 2026-05-22. Next refresh: weekly.
Why use Sonar Reasoning Pro on Vercel AI Gateway?
Vercel AI Gateway offers Sonar Reasoning Pro with competitive pricing. Vercel AI Gateway is a unified AI proxy providing a single OpenAI-compatible API endpoint to 275+ models from 25+ providers including Anthropic, OpenAI, Google, Meta, Mistral, DeepSeek, xAI, Alibaba, Amazon, ByteDance, Cohere, MiniMax, MoonshotAI, KwaiPilot, Black Forest Labs, Recraft, Voyage AI, NVIDIA, and more.
Compare Sonar Reasoning Pro across 3 providers to find the best fit for your use caseSetup recipe
Python + curlpip install openaiexport AI_GATEWAY_API_KEY=...import os
from openai import OpenAI
client = OpenAI(
api_key=os.environ["AI_GATEWAY_API_KEY"],perplexity/sonar-reasoning-proRequest example
import os
from openai import OpenAI
client = OpenAI(
api_key=os.environ["AI_GATEWAY_API_KEY"],
base_url="https://ai-gateway.vercel.sh/v1"
)
response = client.chat.completions.create(
model="perplexity/sonar-reasoning-pro",
messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)Gotchas
- Use provider model ID "perplexity/sonar-reasoning-pro", not the LLMReference slug "sonar-reasoning-pro".
- creator/model-name e.g. kwaipilot/kat-coder-pro-v2
- The examples expect AI_GATEWAY_API_KEY; rename it only if your application config maps the new variable.
Compare Sonar Reasoning Pro Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| OpenRouter | $2.00 | $8.00 |
| Perplexity Labs | $2.00 | $8.00 |
| Vercel AI Gateway | — | — |
Capabilities
About Sonar Reasoning Pro
Perplexity's Chain-of-Thought reasoning search model. Replaced sonar-reasoning (deprecated December 2025). Request fees: $6-$14/1K requests (Low/Medium/High).
FAQ
What is the context window for Sonar Reasoning Pro on Vercel AI Gateway?
Sonar Reasoning Pro supports a 127,000 token context window on Vercel AI Gateway.
How does Vercel AI Gateway compare to other Sonar Reasoning Pro providers?
Sonar Reasoning Pro is available from 3 providers. The cheapest input pricing is $2/1M tokens from OpenRouter.
What API model ID do I use for Sonar Reasoning Pro on Vercel AI Gateway?
Use the model ID perplexity/sonar-reasoning-pro when calling Vercel AI Gateway's API.
Who created Sonar Reasoning Pro?
Sonar Reasoning Pro was created by Perplexity Labs as part of the Sonar model family.
Is Sonar Reasoning Pro open source?
Sonar Reasoning Pro is not open source; the seed data lists it as proprietary.