GPT-OSS 120B vs GLM 4.5
openai/gpt-oss-120b · z-ai/glm-4.5
As of November 5, 2026, GPT-OSS 120B is the cheaper API on UberLLM: $0.0001 per million input tokens and $0.0003 per million output, versus $0.0059 / $0.0216 for GLM 4.5, about 99% 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 GPT-OSS 120B to cut cost; choose GLM 4.5 when its capabilities fit your task better.
GPT-OSS 120B vs GLM 4.5, side by side
| Spec | GPT-OSS 120B | GLM 4.5 |
|---|---|---|
| Price · input / 1M | $0.0001 | $0.0059 |
| Price · output / 1M | $0.0003 | $0.0216 |
| Context length | 128,000 | 128,000 |
| Max output tokens | 16,384 | 32,768 |
| Input modalities | text | text |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Reasoning | — | Yes |
| % off list | 99.9% off | 99% off |
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?
GPT-OSS 120B vs GLM 4.5 — FAQ
Is GPT-OSS 120B or GLM 4.5 cheaper?
GPT-OSS 120B is cheaper on a blended token mix, by about 99%. 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 GPT-OSS 120B and GLM 4.5?
GPT-OSS 120B: $0.0001 in / $0.0003 out per 1M tokens. GLM 4.5: $0.0059 in / $0.0216 out per 1M tokens. That's roughly a 99% blended difference. Prices are live; UberLLM adds no fee.
Can I use both GPT-OSS 120B and GLM 4.5 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.