Zhipu: glm-5.3
glm-5.3
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glm-5.3 appears to refer to a variant within the GLM (General Language Model) family, a series of large language models originally developed by the THUDM/Tsinghua-affiliated team and commercialized in various forms by Chinese AI vendors. GLM models are typically full-scale, general-purpose LLMs aimed at tasks like chat, code assistance, content generation, and analysis, competing with models such as GPT and LLaMA in capability. A 5.x-style designation usually indicates an internal or incremental generation/version rather than a small, edge-optimized model, so it is likely positioned as a relatively capable, general-use model rather than a tiny or highly specialized one. However, detailed public information about the specific “glm-5.3” variant (such as its exact size, training data mix, and benchmarks) is limited or not clearly documented under that exact name in widely accessible English-language sources.
Pricing
Current price per 1,000,000 tokens. Every request is billed automatically from its exact usage.
Included in plans
Statistics
Live performance and usage of this model, aggregated across all users.
Detailed statistics appear here as soon as this model starts receiving requests.
API
Call this model from any OpenAI-compatible client using your API token.
curl https://apiex.cloud/api/v1/chat/completions \
-H "Authorization: Bearer $NEW_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "glm-5.3",
"messages": [
{
"role": "user",
"content": "Explain quantum entanglement in one paragraph."
}
],
"temperature": 0.7
}'Authentication
Every request must include an Authorization: Bearer <TOKEN> header. Generate a token from your account's API Keys page — its access to models is set automatically from your active plans and redeemed codes, and you can set its rate limit and IP restrictions.
| Parameter | Type | Description |
|---|---|---|
model | string, required | This model's ID, exactly as shown above. |
messages | array, required | Conversation history as role/content objects (system, user, assistant). |
temperature | number, optional | Sampling randomness, typically 0–2. |
max_tokens | integer, optional | Upper limit on tokens generated in the reply. |
top_p | number, optional | Nucleus-sampling threshold, as an alternative to temperature. |
stream | boolean, ignored | Responses are always returned in full so the exact cost can be billed; streaming is not available. |
Replace YOUR_API_KEY with a token from your account, then see the full API reference for every parameter.
Frequently asked questions
What is glm-5.3?
glm-5.3 appears to refer to a variant within the GLM (General Language Model) family, a series of large language models originally developed by the THUDM/Tsinghua-affiliated team and commercialized in various forms by Chinese AI vendors. GLM models are typically full-scale, general-purpose LLMs aimed at tasks like chat, code assistance, content generation, and analysis, competing with models such as GPT and LLaMA in capability. A 5.x-style designation usually indicates an internal or incremental generation/version rather than a small, edge-optimized model, so it is likely positioned as a relatively capable, general-use model rather than a tiny or highly specialized one. However, detailed public information about the specific “glm-5.3” variant (such as its exact size, training data mix, and benchmarks) is limited or not clearly documented under that exact name in widely accessible English-language sources.
How much does glm-5.3 cost?
Input tokens are priced at $0,09 per 1,000,000 tokens and output tokens at $1,68 per 1,000,000 tokens. Pricing is billed automatically per request; no separate plan is required.
What is the context length of glm-5.3?
glm-5.3 supports a context window of up to 1,310,720 tokens.
Does glm-5.3 support image input?
glm-5.3 currently accepts text input only.
Which provider is glm-5.3 from?
glm-5.3 is developed by Zhipu and made available on this gateway through our routing infrastructure.
When was glm-5.3 added to this gateway?
glm-5.3 has been available on this gateway since September 23, 2026.
Is glm-5.3 currently available?
Yes, glm-5.3 is active and can be used right now through this gateway.
