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Z.ai: GLM 5.2 Thinking

glm-5.2:thinking

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GLM 5.2 Thinking costs $0.246 per million input tokens and $0.772 per million output tokens, supports 1.05M context, and is available through the OpenAI-compatible API.

GLM-5.2 with thinking enabled for harder long-horizon coding, autonomous agent workflows, complex engineering optimization, and real-world development tasks.

Modalities

Text → Text

Input / output price

$0.246 / $0.772 per 1M

Context

1.05M · max output 131K

Capabilities

ReasoningTool callingLong contextOpen weights

Pricing

Billed per token actually used and deducted from your credits.

ItemUSD per 1M tokens
Input$0.246
Output$0.772
Cached input$0.0456

Calculator

Drag the sliders to estimate what this model will cost.

Per request
$0.00135
Per day
$0.6774
Per month (30 days)
$20.32

GLM 5.2 Thinking: input $0.2457/M · output $0.7722/M · cached input $0.0456/M

Request with these settings
curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "glm-5.2:thinking", "max_tokens": 800,
       "messages": [{"role": "user", "content": "…"}]}'

Code samples

OpenAI-compatible. Set the base URL to https://api.geniusrelaygpt.com/v1 and the model to glm-5.2:thinking.

curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "glm-5.2:thinking",
    "stream": true,
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Use it in a client: Cursor · Cline · SillyTavern · Codex

Parameters

Common OpenAI parameters can be passed as-is.

temperaturetop_pmax_tokensstreamstoppresence_penaltyfrequency_penaltyseed

FAQ

How is GLM 5.2 Thinking billed?
Input is $0.246 and output is $0.772 per million tokens; cached input is $0.0456. The charge for every request is listed in Usage Logs in the console.
How long is the context window?
1.05M tokens. In a long conversation every turn is billed for the full input, so keep the history under control.
Does it support streaming?
Yes. Add "stream": true to the request to receive server-sent events in the OpenAI format.
GLM 5.2 Thinking API pricing · GeniusRelay