GLM-5.3 Flash | Roten AI

Scoped billing reference

Price for the stated settings.

$0.15Input / 1M tokens$0.50Output / 1M tokens

Uncached input and output are priced separately per million tokens.

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Capabilities

Model capabilities.

Text

Text and reasoning through the text API.

Coding

Send code and instructions through the text API.

Input → output

text → text

Workload candidates.

Candidates for the stated workload and billing scope.

Text

Cost candidate

Text and reasoning through the text API.

View workload

Coding

Cost candidate

Send code and instructions through the text API.

View workload

Reference Arena scores.

Reference scores.

Reference Arena scores for GLM-5.3 Flash
Workload	Benchmark	Recorded score
Text	Arena	1475
Coding	Arena	1525
Vision	Arena	1273

Reference benchmark data is separate from API capability tests.

Read the methodology

Implementation

Test this model.

Copy a model request, replace the API key with your own, and run.

API model ID: glm-5.3-flash

Text and coding through the text API. Input format: text.

Copy the Python or cURL test for GLM-5.3 Flash. Replace the API-key placeholder with your own key and run.

Basic text test · Sends a basic text request. Vision input is not confirmed for this upstream model.

GLM-5.3 Flash · Python

import requests

response = requests.post(
    url="https://api.roten-ai.com/v1/chat/completions",
    headers={
        "Authorization": "Bearer YOUR_ROTEN_API_KEY",
    },
    json={
        "model": "glm-5.3-flash",
        "messages": [
            {
                "role": "user",
                "content": "Explain what an API key is in one short sentence."
            }
        ],
        "max_tokens": 128,
        "thinking": {
            "type": "disabled"
        },
        "stream": False
    },
    timeout=180,
)

print(response.json())
response.raise_for_status()

GLM-5.3 Flash · cURL

curl --fail-with-body 'https://api.roten-ai.com/v1/chat/completions' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer YOUR_ROTEN_API_KEY' \
  -d '{
  "model": "glm-5.3-flash",
  "messages": [
    {
      "role": "user",
      "content": "Explain what an API key is in one short sentence."
    }
  ],
  "max_tokens": 128,
  "thinking": {
    "type": "disabled"
  },
  "stream": false
}'

Python requires requests: install once with python3 -m pip install requests. cURL examples run directly in your terminal.

Consider an alternative.

Compare its input formats, capabilities and prices.

Claude Fable 5 High

Anthropic

Available

Alternative performance candidate for text. Alternative performance candidate for coding.

$7.00 input / $35.00 output · per 1M tokens

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