Sapiens AI vs 
StepFun
Verdict
- StepFun's flagship leads: Step 5 Preview at 65.0 vs Agnes 3.0 Flash at 62.3.
- StepFun has the better model in 3 of 4 price bands.
- Sapiens AI's fastest ranked model (Agnes 2.5 Pro Alpha, 175 tok/s) beats StepFun's (Step 3.7 Flash, 154 tok/s).
- StepFun publishes more open-weights models (2 vs 1).
Best model per price band
Each provider’s highest-index model below the price ceiling. Purple marks the winner of the band.
| Price band | Sapiens AI | StepFun |
|---|---|---|
| Under $0.50/M | Agnes 3.0 Flash 62.3$0.075/M | Step 3.5 Flash 2603 54.6$0.150/M |
| Under $2/M | Agnes 3.0 Flash 62.3$0.075/M | Step 5 Preview 65.0$1.43/M |
| Under $10/M | Agnes 3.0 Flash 62.3$0.075/M | Step 5 Preview 65.0$1.43/M |
| Any price | Agnes 3.0 Flash 62.3$0.075/M | Step 5 Preview 65.0$1.43/M |
Line-up
| Metric | Sapiens AI | StepFun |
|---|---|---|
| Flagship index | 62.3 | 65.0 |
| Ranked models | 3 | 6 |
| Open-weights models | 1 | 2 |
| Cheapest ranked, $/M | $0.075 | $0.150 |
| Fastest ranked, tok/s | 175 | 154 |
| Release cadence, days | – | 406 |
| Last release | – | 29 May 2026 |
| Next expected | – | 27 Jan 2027 – 18 Dec 2027 |
Data as of 19 Sept 2026. See Sapiens AI and StepFun in full.