Z.ai · Open weights

GLM 5.3 Uncensored

Added Sep 26, 2026Open weights

An experimental uncensored version of the full GLM 5.3 reasoning model for chat, creative writing, coding, and tool use. It may show unusual behavior or inconsistent response quality.

Reasoning
Tools

Input: Text
Output: Text
Reasoning effort: low · high · max
Discovery tier: Open weights

Pricing

USD per 1M tokens

Input: $1.25
Output: $2.25
Cache read: $0.30

Reference prices as published by the model provider. API example

Specifications

Context window: 1M
Max output: 131.1K
Average output (7 days): 1.1K tokens; Longer than 74% of 465 models

Side by side

Compare models

Put GLM 5.3 Uncensored next to up to three other models. The comparison stays in the link, so you can share it.

TryKimi K3 Qwen: QvQ Max DeepSeek R1 Qwen Abliterated All 3

Public evaluations

Benchmarks

Independent evaluation results, with how each score ranks among the models in the Noumen catalog.

#8Usage Share4.8%

Ranks among Noumen catalog models on Usage leaderboards. Only top-20 placements are listed.

Live routing data

Performance and reliability

Recent averages across requests routed for this model. Your own speed depends on prompt length, reasoning effort and load.

Throughput: 31.5 tok/s; Faster than 21% of 251 models
Time to first token: 26.0 s; Quicker than 0% of 251 models
Prompt cache hits: 94.5%; About $0.35 per 1M input tokens with caching
Request success (24h): 98.8%; Reliable

Cache hits are the share of input tokens recently served from a prompt cache across all requests. They are not a forecast of your own hit rate.

Hourly request success · last 72 hoursLowest hour 90.1%

Healthy (98% or more)
Degraded (90–98%)
Down (under 90%)
No requests

Developers

Use it through the API

Noumen’s API is OpenAI-compatible: any Chat Completions client works with a base URL and a key.

Read the quickstart

curl https://www.noumen.xyz/api/v1/chat/completions \
  -H "Authorization: Bearer $NOUMEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "z-ai/glm-5.3-uncensored",
    "reasoning_effort": "low",
    "messages": [{ "role": "user", "content": "Explain this stack trace." }]
  }'

import os
from openai import OpenAI

client = OpenAI(base_url="https://www.noumen.xyz/api/v1", api_key=os.environ["NOUMEN_API_KEY"])
reply = client.chat.completions.create(
    model="z-ai/glm-5.3-uncensored",
    messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)

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