hy4-specs.json

{
  "name": "Hy4 Preview",
  "model_id": "tencent/hy4-preview",
  "provider": "Tencent (as described by the source website)",
  "context_window_tokens": 1048576,
  "maximum_output_tokens": 64000,
  "architecture": {
    "total_parameters": "770B",
    "active_parameters_per_token": "49B",
    "backbone_layers": 78,
    "moe_layers": 77,
    "routed_experts_per_moe_layer": 256,
    "shared_experts_per_layer": 1,
    "experts_activated_per_token": "top-8 routed + shared",
    "native_mtp": {
      "layers": 1,
      "total_parameters": "10B",
      "active_parameters": "0.7B"
    }
  },
  "pricing": {
    "input_usd_per_million_tokens": 0.834,
    "output_usd_per_million_tokens": 2.501,
    "source_context": "Pricing shown on the accompanying website; verify current provider pricing."
  },
  "access": {
    "api_compatibility": "OpenAI-compatible",
    "provider_urls": [
      "https://openrouter.ai/tencent/hy4-preview",
      "https://tokenra.io/"
    ]
  },
  "provenance": {
    "source_website": "https://hy4ai.com/",
    "last_reviewed": "2026-08-29",
    "status": "Independent compilation; not an official provider dataset.",
    "verification": "Treat all values as reference information and verify against official documentation and the current API provider before use."
  }
}