GLM 5.3 is Z.ai's open weight flagship, and GLM 5.3 Flash is its faster, cheaper sibling. Both are reasoning models with a context window of about a million tokens, and both rank among the strongest open models on hard reasoning benchmarks.
Uncensored versions of both are available, and on our rankings they hold the top spots. This page compares every uncensored GLM 5.3 and GLM 5.3 Flash version on Open Uncensored, measured on the same tests.
The originals
- GLM 5.3 Flash scores 40% on Humanity's Last Exam and 91% on GPQA Diamond (Artificial Analysis, reasoning mode).
- GLM 5.3 scores 42% on Humanity's Last Exam and 92% on GPQA Diamond (Artificial Analysis, reasoning mode).
Every uncensored version keeps that starting point. What differs is how much each edit costs in agent reliability, how much it still refuses, and the price.
Every uncensored GLM 5.3 on Open Uncensored
| Model | id | Rank (score) | Agent tasks | Loops | Answers edgy requests | Hard-line refusals | $ per 1M in + out | Context | Providers |
|---|---|---|---|---|---|---|---|---|---|
| GLM 5.3 Flash Uncensored | glm-5.3-flash-uncensored |
#2 (69.7) | 3/5 | 40% | 94% | 14% | $1.00 | 1049K | nanogpt |
| Apex Flash 1 Abliterated | glm-5.3-flash-apex-abliterated |
#8 (63.2) | 3/5 | 0% | 86% | 100% | $0.650 | 1049K | nanogpt |
| GLM 5.3 Uncensored | glm-5.3-uncensored |
#9 (63.0) | 2/5 | 20% | 92% | 0% | $3.50 | 1049K | nanogpt |
| Abliterated Large v2 | abliterated-large-v2 |
#11 (62.0) | 1/5 | 40% | 94% | 0% | $8.00 | 1049K | abliteration-ai, venice, nanogpt |
Which one to use
- Best overall: GLM 5.3 Flash Uncensored (rank #2, score 69.7).
- For agents and coding tools: Apex Flash 1 Abliterated, 3 of 5 agent tasks finished, 0% loops.
- Most open: Abliterated Large v2, answers 94% of edgy requests and refuses 0% of hard-line ones.
- Cheapest: Apex Flash 1 Abliterated at $0.650 per million input plus output tokens.
Agent tasks are five multi-step tool scenarios, one run each, so a one task gap is noise. Answers edgy requests counts 36 legitimate prompts that cautious models refuse. The live numbers, including speed on real traffic, are on the rankings page.
Call it
curl https://openuncensored.com/api/v1/chat/completions \
-H "Authorization: Bearer $OU_API_KEY" -H "Content-Type: application/json" \
-d '{"model": "glm-5.3-flash-uncensored", "messages": [{"role": "user", "content": "Hello"}]}'
If the providers for a version are down, the API falls back to the next best ranked uncensored GLM 5.3 built on
the same original, and the X-OU-Model header tells you which one answered.
Try any of them in a minute
No account and no sign up. Buy a prepaid key at openuncensored.com/credits, or hand your agent openuncensored.com/agents.md and let it get one for you. Then:
curl https://openuncensored.com/api/v1/chat/completions \
-H "Authorization: Bearer $OU_API_KEY" -H "Content-Type: application/json" \
-d '{"model": "deepseek-v4.1-flash-1017-uncensored", "messages": [{"role": "user", "content": "Hello"}]}'
The full, always current table is on the rankings page.