Seed 1.6 Flash vs Sonar Reasoning Pro
ByteDance vs Perplexity — benchmarks, pricing, and capabilities side by side.
- •Seed 1.6 Flash is cheaper ($0.08 vs $2.00 per 1M input)
- •Seed 1.6 Flash has a larger context window (262K)
| Seed 1.6 Flash | Sonar Reasoning Pro | |
|---|---|---|
| Intelligence index | — | 95.7 |
| Developer | ByteDance | Perplexity |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 262,144 tokens | 128,000 tokens |
| Input price | $0.08 / 1M | $2.00 / 1M |
| Output price | $0.30 / 1M | $8.00 / 1M |
| Speed | — | — |
| Released | December 23, 2025 | March 7, 2025 |
| Parameters | — | — |
| Input modalities | Image, Text, Video | Text, Image |
| Output modalities | Text | Text |