GPT-5 Pro vs Reka Flash
OpenAI vs Reka AI — benchmarks, pricing, and capabilities side by side.
- •GPT-5 Pro has the higher intelligence index (88.4 vs 52.9)
- •Reka Flash is cheaper ($0.20 vs $15.00 per 1M input)
| GPT-5 Pro | Reka Flash | |
|---|---|---|
| Intelligence index | 88.4 | 52.9 |
| Developer | OpenAI | Reka AI |
| Type | LLM | LLM |
| Access | API only | — |
| Context window | 400,000 tokens | — |
| Input price | $15.00 / 1M | $0.20 / 1M |
| Output price | $120.00 / 1M | $0.80 / 1M |
| Speed | — | 85 tok/s |
| Released | October 6, 2025 | October 4, 2024 |
| Parameters | — | — |
| Input modalities | Text, Image | — |
| Output modalities | Text | — |