Step 2 (16K) vs Step 5 Preview
Step 5 Preview is cheaper on output tokens, while Step 5 Preview offers a larger context window. Choose Step 2 (16K) or Step 5 Preview based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Step 2 (16K) | Step 5 Preview |
|---|---|---|
| Provider | StepFun (Global) | StepFun (Global) |
| Input / 1M tokens | $5.21 | $1.00 |
| Output / 1M tokens | $16.44 | $2.70 |
| Context window | 16K | 1M |
| Parameters | — | — |
| Open weights | No | No |
| Released | Jan 2025 | Sep 2026 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.