GPT-2 vs Sonar Reasoning Pro
OpenAI vs Perplexity — benchmarks, pricing, and capabilities side by side.
- •Sonar Reasoning Pro has a larger context window (128K)
| GPT-2 | Sonar Reasoning Pro | |
|---|---|---|
| Intelligence index | — | 95.7 |
| Developer | OpenAI | Perplexity |
| Type | LLM | Multimodal |
| Access | Open weights | API only |
| Context window | 1,024 tokens | 128,000 tokens |
| Input price | — | $2.00 / 1M |
| Output price | — | $8.00 / 1M |
| Speed | — | — |
| Released | February 14, 2019 | March 7, 2025 |
| Parameters | 1.5B | — |
| Input modalities | Text | Text, Image |
| Output modalities | Text | Text |