LLM Comparison
Sonar Reasoning Pro vs Seed 1.6 Flash
Side-by-side specs, pricing & capabilities · Updated April 2026
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2/6 modelsSame tier:
S Sonar Reasoning Pro | S Seed 1.6 Flash | |
|---|---|---|
| Organization | Perplexity AI | ByteDance |
| OpenTools Score | ||
| Family | Sonar | Seed |
| Status | Current | Current |
| Release Date | Mar 2025 | Dec 2025 |
| Context Window | 128K tokens | 262K tokens |
| Input Price | $2.00/M tokens | $0.07/M tokens |
| Output Price | $8.00/M tokens | $0.30/M tokens |
| Capabilities | textvisioncodeextended-thinking | textvisionvideocode |
| Max Output | — | 33K tokens |
| API Identifier | perplexity/sonar-reasoning-pro | bytedance-seed/seed-1.6-flash |
| Benchmarks | ||
| MMLU | 83 | — |
| View Sonar Reasoning Pro | View Seed 1.6 Flash | |
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% |
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.
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.
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