GLM 4.5 vs GLM 5.3
z-ai/glm-4.5 · z-ai/glm-5.3
As of November 5, 2026, GLM 5.3 is the cheaper API on UberLLM: $0.0011 per million input tokens and $0.0226 per million output, versus $0.0059 / $0.0216 for GLM 4.5, about 2% less when output is 3 tokens for every input token. These are the best prices on the market right now. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose GLM 5.3 to cut cost; choose GLM 4.5 when its capabilities fit your task better.
GLM 4.5 vs GLM 5.3, side by side
| Spec | GLM 4.5 | GLM 5.3 |
|---|---|---|
| Price · input / 1M | $0.0059 | $0.0011 |
| Price · output / 1M | $0.0216 | $0.0226 |
| Context length | 128,000 | 1,000,000 |
| Max output tokens | 32,768 | 131,072 |
| Input modalities | text | text |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 99% off | 99% off |
| First token, median (7 days) | — | 4.3 s (645 requests) |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 5, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
GLM 4.5 vs GLM 5.3 — FAQ
Is GLM 4.5 or GLM 5.3 cheaper?
GLM 5.3 is cheaper on a blended token mix, by about 2%. 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 4.5 and GLM 5.3?
GLM 4.5: $0.0059 in / $0.0216 out per 1M tokens. GLM 5.3: $0.0011 in / $0.0226 out per 1M tokens. That's roughly a 2% blended difference. Prices are live; UberLLM adds no fee.
Can I use both GLM 4.5 and GLM 5.3 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.