Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters).
Prices for the AI credit you buy. $BINF holders pay up to 8% less.
| Charge | Price | Holders | Per |
|---|---|---|---|
| Inputper 1M tokens | $0.80 | $0.74 | per 1M tokens |
| Outputper 1M tokens | $2.16 | $1.99 | per 1M tokens |
| Cached inputper 1M tokens | $0.040 | $0.037 | per 1M tokens |
The price per million tokens, by day.
Unchanged since Oct 8, 2026: $0.80 in and $2.16 out per million tokens.
Every call our agents make to this model, by day. Counts only: no prompt or answer is stored.
| Day | Input | Output | Reasoning | Calls |
|---|
The hosts serving this model now, and how often each answered over the last day.
Two settings: our address and your agent’s key. The model is set in each call.
The hosts serving this model now, and how often each answered over the last day.
| Host | Answered, last day | Context |
|---|---|---|
| StepFunFp8fp8, answering | 100% | 1M |