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Add up to four models via ?models=slug-a,slug-b — or pick from any model page.
| Spec | StepFun |
|---|---|
| Params | 199B |
| Architecture | moe |
| Context | 262K |
| License | |
| License terms | Apache License 2.0 |
| 125.7 GBest | |
| Cheapest hosted (out/1M) | $0.30 · OpenRouter |
| Released | Feb 1, 2026 |
| Arena Coding | 1449 |
| Arena Creative Writing | 1345 |
| Arena Hard Prompts | 1413 |
| Arena Instruction Following | 1384 |
| Arena Maths | 1408 |
| Arena Text (overall) | 1393 |
