GLM 5.1 vs GLM-5.2
z-ai/glm-5.1 · z-ai/glm-5.2
As of October 31, 2026, GLM-5.2 is the cheaper API on UberLLM: $0.0005 per million input tokens and $0.0990 per million output, versus $0.0693 / $0.2178 for GLM 5.1, about 59% less when output is 3 tokens for every input token. These are the median prices buyers paid over the last 24 hours. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose GLM-5.2 to cut cost; choose GLM 5.1 when its capabilities fit your task better.
GLM 5.1 vs GLM-5.2, side by side
| Spec | GLM 5.1 | GLM-5.2 |
|---|---|---|
| Price · input / 1M | $0.0693 | $0.0005 |
| Price · output / 1M | $0.2178 | $0.0990 |
| Context length | 200,000 | 1,048,576 |
| Max output tokens | 24,000 | 131,072 |
| Input modalities | text | text |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 95% off | 98% off |
Median prices buyers paid on UberLLM over the last 24 hours. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated October 31, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
GLM 5.1 vs GLM-5.2 — FAQ
Is GLM 5.1 or GLM-5.2 cheaper?
GLM-5.2 is cheaper on a blended token mix, by about 59%. A request costs what its provider charged, UberLLM adds no fee, and every request is listed with its cost in Activity.
What's the price difference between GLM 5.1 and GLM-5.2?
GLM 5.1: $0.0693 in / $0.2178 out per 1M tokens. GLM-5.2: $0.0005 in / $0.0990 out per 1M tokens. That's roughly a 59% blended difference. Prices are live; UberLLM adds no fee.
Can I use both GLM 5.1 and GLM-5.2 with one API?
Yes. Both are served through a single OpenAI-compatible endpoint — set the base URL to https://api.uberllm.dev/v1 and your UberLLM key, then switch between them by changing the model id. Anthropic SDKs work via https://api.uberllm.dev/v1/messages.