Claude Sonnet 4.5 vs R1 1776
Anthropic vs Perplexity — benchmarks, pricing, and capabilities side by side.
- •R1 1776 has the higher intelligence index (95.4 vs 80.4)
- •R1 1776 is cheaper ($0.00 vs $3.00 per 1M input)
| Claude Sonnet 4.5 | R1 1776 | |
|---|---|---|
| Intelligence index | 80.4 | 95.4 |
| Developer | Anthropic | Perplexity |
| Type | LLM | LLM |
| Access | API only | — |
| Context window | 1,000,000 tokens | — |
| Input price | $3.00 / 1M | $0.00 / 1M |
| Output price | $15.00 / 1M | $0.00 / 1M |
| Speed | 42 tok/s | — |
| Released | September 29, 2025 | February 18, 2025 |
| Parameters | — | — |
| Input modalities | Text, Image | — |
| Output modalities | Text | — |