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OpenKey

GLM 4.5V

Z.aiReleased Aug 11, 2025

GLM-4.5V is a vision-language foundation model for multimodal agent applications. Built on a Mixture-of-Experts (MoE) architecture with 106B parameters and 12B activated parameters, it achieves state-of-the-art results in video understanding,...

Try in playground
Context window
66K tokens
Max output
16K tokens
Input
text, image
Output
text
Tokenizer
Other
Knowledge cutoff
Dec 31, 2024
Released
Aug 11, 2025
Reasoning
optional

Pricing

Per 1M tokens. The provider price and our flat 3% fee are separate columns — what you pay is their sum.

Per 1M tokensProvider+ 3% feeYou pay
Input$0.600$0.018$0.618
Output$1.80$0.054$1.85
Cache read$0.110$0.0033$0.113

Supported parameters

  • frequency_penalty
  • include_reasoning
  • max_tokens
  • presence_penalty
  • reasoning
  • repetition_penalty
  • response_format
  • seed
  • stop
  • temperature
  • tool_choice
  • tools
  • top_k
  • top_p

Call it

OpenAI-compatible: point your SDK at api.openkey.ai/v1 and use model z-ai/glm-4.5v.

Code sample language
curl https://api.openkey.ai/v1/chat/completions \
  -H "Authorization: Bearer $OPENKEY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "z-ai/glm-4.5v",
    "messages": [{"role": "user", "content": "Hello"}]
  }'
import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.openkey.ai/v1",
    api_key=os.environ["OPENKEY_API_KEY"],
)

completion = client.chat.completions.create(
    model="z-ai/glm-4.5v",
    messages=[{"role": "user", "content": "Hello"}],
)
print(completion.choices[0].message.content)
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.openkey.ai/v1",
  apiKey: process.env.OPENKEY_API_KEY,
});

const completion = await client.chat.completions.create({
  model: "z-ai/glm-4.5v",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

Questions

How much does GLM 4.5V cost via API?
Through OpenKey, GLM 4.5V costs $0.618 per 1M input tokens and $1.85 per 1M output tokens. That is the provider price ($0.600 / $1.80) plus a flat 3% fee — nothing else.
What is GLM 4.5V's context window?
GLM 4.5V accepts up to 66K tokens of context and returns up to 16K tokens per request.
Is GLM 4.5V OpenAI-compatible?
Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "z-ai/glm-4.5v" using any OpenAI SDK — only the base URL and API key change.
What inputs does GLM 4.5V support?
GLM 4.5V accepts text, image input and produces text output. Its knowledge cutoff is Dec 31, 2024.

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