R1 1776 vs Step 3.5 Flash
Perplexity vs StepFun — benchmarks, pricing, and capabilities side by side.
- •R1 1776 has the higher intelligence index (95.4 vs 83.1)
- •R1 1776 is cheaper ($0.00 vs $0.09 per 1M input)
| R1 1776 | Step 3.5 Flash | |
|---|---|---|
| Intelligence index | 95.4 | 83.1 |
| Developer | Perplexity | StepFun |
| Type | LLM | LLM |
| Access | — | Open weights |
| Context window | — | 262,144 tokens |
| Input price | $0.00 / 1M | $0.09 / 1M |
| Output price | $0.00 / 1M | $0.30 / 1M |
| Speed | — | 194 tok/s |
| Released | February 18, 2025 | January 29, 2026 |
| Parameters | — | — |
| Input modalities | — | Text |
| Output modalities | — | Text |