Compare Seed-2.0-Lite from bytedance-seed and Sonar Reasoning Pro from Perplexity on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.


Seed-2.0-Lite and Sonar Reasoning Pro are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Seed-2.0-Lite, from bytedance-seed, has a 262,144-token context window and is priced at $0.25/M tokens input, $2/M tokens output on OpenRouter.
Sonar Reasoning Pro, from Perplexity, has a 128,000-token context window and is priced at $2/M tokens input, $8/M tokens output on OpenRouter.
| Attribute | Seed-2.0-Lite | Sonar Reasoning Pro |
|---|---|---|
| Input price | $0.25/M tokens | $2/M tokens |
| Output price | $2/M tokens | $8/M tokens |
| Context window | 262,144 tokens | 128,000 tokens |
| Intelligence Index | Not available | 11.8 |
| Coding Index | Not available | Not available |
| Agentic Index | Not available | Not available |
| Latency (p50) | 1.18 s | 22.48 s |
| Throughput (p50) | 45.0 tok/s | 18.0 tok/s |
Benchmark data updated
Seed-2.0-Lite has the longer context window at 262,144 tokens, compared with 128,000 tokens for Sonar Reasoning Pro.
Seed-2.0-Lite is faster on OpenRouter, generating a median 45.0 tokens per second compared with 18.0 tokens per second for Sonar Reasoning Pro.