ERNIE 4.5 21B A3B Thinking vs Sonar Reasoning Pro
Baidu vs Perplexity — benchmarks, pricing, and capabilities side by side.
- •ERNIE 4.5 21B A3B Thinking is cheaper ($0.07 vs $2.00 per 1M input)
- •ERNIE 4.5 21B A3B Thinking has a larger context window (131K)
| ERNIE 4.5 21B A3B Thinking | Sonar Reasoning Pro | |
|---|---|---|
| Intelligence index | — | 95.7 |
| Developer | Baidu | Perplexity |
| Type | LLM | Multimodal |
| Access | Open weights | API only |
| Context window | 131,072 tokens | 128,000 tokens |
| Input price | $0.07 / 1M | $2.00 / 1M |
| Output price | $0.28 / 1M | $8.00 / 1M |
| Speed | — | — |
| Released | October 9, 2025 | March 7, 2025 |
| Parameters | — | — |
| Input modalities | Text | Text, Image |
| Output modalities | Text | Text |