Z.ai · Open weights
GLM 5.3 Uncensored
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
GLM 5.3 Uncensored compared
Specifications, prices, speed and benchmark scores next to each other. Benchmarks below show every compared model too.
| GLM 5.3 UncensoredZ.aiThis model | Apex Flash 1Z.aiRemove | |
|---|---|---|
| Provider | Z.ai | Z.ai |
| Discovery tier | Open weights | Open weights |
| Added | Sep 26, 2026 | Oct 5, 2026 |
| Limits | ||
| Context window | 1.05M | 1.05M |
| Max output | 131.07KBest | 32.77K |
| Average output | 1.1K tokens | 672 tokens |
| Pricing, USD per 1M tokens | ||
| Input | $1.25 | $0.15Best |
| Output | $2.25 | $0.50Best |
| Cache read | $0.30 | $0.075Best |
| Performance | ||
| Throughput | 37.0 tok/sBest | 14.5 tok/s |
| Time to first token | 7.6 s | 4.1 sBest |
| Request success (24h) | 98.8%Best | 94.6% |
| Capabilities | ||
| Reasoning | Yes | Yes |
| Tools | Yes | Yes |
| Vision | No | Yes |
| Reasoning effort | low, high, max | low, high, max |
Public evaluations
Benchmarks
Independent evaluation results, with how each score ranks among the models in the Noumen catalog.
- GLM 5.3 Uncensored
- Apex Flash 1
| Leaderboard | GLM 5.3 Uncensored | Apex Flash 1 |
|---|---|---|
| Usage Share | #8 · 4.8% | Not in top 20 |
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
- 37.0 tok/s
- Faster than 27% of 251 models
- Time to first token
- 7.6 s
- Quicker than 19% of 251 models
- Prompt cache hits
- 94.7%
- 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.
- 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.
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)Z.ai
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