LLM Comparison
Seed 1.6 Flash vs Sonar Reasoning Pro
Side-by-side specs, pricing & capabilities · Updated May 2026
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2/6 modelsSame tier:
| Organization | ||
| OpenTools Score | 44 8.8 | |
| Family | Seed | Sonar |
| Status | Current | Current |
| Release Date | Dec 2025 | Mar 2025 |
| Context Window | 262K tokens | 128K tokens |
| Input Price | $0.07/M tokens | $2.00/M tokens |
| Output Price | $0.30/M tokens | $8.00/M tokens |
| Capabilities | textvisionvideocode | textvisioncodeextended-thinking |
| Max Output | 33K tokens | — |
| API Identifier | bytedance-seed/seed-1.6-flash | perplexity/sonar-reasoning-pro |
| Benchmarks | ||
| GPQA Diamond | — | 62.3perplexity |
| MATH-500 | — | 92.1perplexity |
| AIME | — | 77perplexity |
| MMLU Pro | — | 79perplexity |
| View Seed 1.6 Flash | View Sonar Reasoning Pro | |
Cost Calculator
Enter your expected monthly token usage to compare costs.
| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| Seed 1.6 FlashCheapest | $0.08 | $0.15 | $0.22 | — |
| Sonar Reasoning Pro | $2.00 | $4.00 | $6.00 | +2567% |
ByteDance
Seed 1.6 Flash
Seed 1.6 Flash is a multimodal llm from ByteDance. Supports up to 262,144 token context window. Available from $0.07/M input tokens.
Perplexity AI
Sonar Reasoning Pro
Sonar Reasoning Pro is a multimodal llm from Perplexity AI. Supports up to 128,000 token context window. Achieves 83.0% on MMLU. Available from $2.00/M input tokens.
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