Piramyd
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Tencent

Hy4 preview

hy4-preview

Tencent: Hy4 preview is a mixture-of-experts model from Tencent, with 49B active parameters out of 770B total.

Context window
1M

tokens

Max output
64K

tokens per response

Input
Text
Price per token
$0

included in your plan

Capabilities

  • Reasoning
  • Image input
  • File input
  • Tool calling
  • JSON output

Reasoning effort: low, medium, high, xhigh

API

  • OpenAI Chat CompletionsPOST /v1/chat/completions

Supported parameters

  • frequency_penalty
  • logit_bias
  • max_completion_tokens
  • max_tokens
  • min_p
  • presence_penalty
  • reasoning
  • reasoning_effort
  • repetition_penalty
  • response_format
  • seed
  • stop
  • temperature
  • tool_choice
  • tools
  • top_k
  • top_p

Quickstart

Any OpenAI-compatible client works; point it at Piramyd and use your key. In a coding agent, run npx piramyd instead.

curl https://api.piramyd.cloud/v1/chat/completions \
  -H "Authorization: Bearer $PIRAMYD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "hy4-preview",
  "messages": [
    {
      "role": "user",
      "content": "Refactor this function to be pure: ..."
    }
  ]
}'

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