Step-1 8K

{
  "id": "step-1-8k",
  "object": "model",
  "created": null,
  "owned_by": "stepfun",
  "name": "Step-1 8K",
  "api": {
    "types": [
      "chat"
    ]
  },
  "limits": {
    "context": 8000,
    "input": null,
    "output": null
  },
  "modalities": {
    "input": [
      "text"
    ],
    "output": [
      "text"
    ]
  },
  "reasoning": {
    "supported": null,
    "efforts": []
  },
  "pricing": {
    "currency": "CNY",
    "unit": "1M_tokens",
    "input": 5,
    "output": 20,
    "cache_read": 1,
    "cache_write": null
  },
  "features": [],
  "info": {
    "status": "retired",
    "release_date": null,
    "knowledge_cutoff": null,
    "description": "Step-1 series classic-architecture language model with 8K context. Retired on 2026-07-08 per the official lifecycle page.",
    "docs": "https://platform.stepfun.com/docs/zh/guides/model-migration",
    "verified_at": "2026-10-11"
  }
}