Reka Flash vs Sonar Reasoning Pro
Reka AI vs Perplexity — benchmarks, pricing, and capabilities side by side.
- •Sonar Reasoning Pro has the higher intelligence index (95.7 vs 52.9)
- •Reka Flash is cheaper ($0.20 vs $2.00 per 1M input)
| Reka Flash | Sonar Reasoning Pro | |
|---|---|---|
| Intelligence index | 52.9 | 95.7 |
| Developer | Reka AI | Perplexity |
| Type | LLM | Multimodal |
| Access | — | API only |
| Context window | — | 128,000 tokens |
| Input price | $0.20 / 1M | $2.00 / 1M |
| Output price | $0.80 / 1M | $8.00 / 1M |
| Speed | 85 tok/s | — |
| Released | October 4, 2024 | March 7, 2025 |
| Parameters | — | — |
| Input modalities | — | Text, Image |
| Output modalities | — | Text |
Shared benchmarks
Reka Flash
Sonar Reasoning Pro
MATH-500
52.9
95.7