Route difference
The first layer is not brand size. It is user market, protocol entry, model-family coverage, and real call stability.
- Baidu Wenxin: China route, 5 Models
- Perplexity: global route, 5 Models
Provider comparison
Baidu Wenxin vs Perplexity
Start with the provider route, compare model coverage, then use read-only key checking to verify what is actually callable.
Region
China route / global route
china / global
Models
5 / 5
56 providers indexed
Baidu Wenxin
ERNIE 4.5 21B A3B · ERNIE 4.5 21B A3B Thinking · ERNIE 4.5 300B A47B
Sample models
Perplexity
Sonar · Sonar Deep Research · Sonar Pro
Sample models
Left provider
Baidu Wenxin
baidu
Regionchina
Models5
Sample models
ERNIE 4.5 21B A3B
ERNIE 4.5 21B A3B Thinking
ERNIE 4.5 300B A47B
Right provider
Perplexity
perplexity
Regionglobal
Models5
Sample models
Sonar
Sonar Deep Research
Sonar Pro
Comparison summary
How to judge first
Baidu Wenxin and Perplexity are cross-region routes. Start with the user's market, then verify whether the key can call reliably across regions.
When model coverage is close, move the decision to price, rate limits, interface compatibility, and stability.
In production, one key should reveal provider identity, callable models, balance or quota signals, limits, and risk notes.
Key checking value
A key may expose only part of the models, interfaces, or regions, so the final call must rely on detection results, not the catalog alone.
- Baidu Wenxin: ERNIE 4.5 21B A3B · ERNIE 4.5 21B A3B Thinking · ERNIE 4.5 300B A47B
- Perplexity: Sonar · Sonar Deep Research · Sonar Pro
Procurement and distribution
For procurement, agency, and marketplace listing, provider comparison must end in supply stability, pricing, monitoring, and model updates.
- Do not treat catalog coverage as real sellability.
- Key checking and continuous monitoring are the final commercial loop.