GPT-5.5 vs GLM-5.2
openai/gpt-5.5 · z-ai/glm-5.2
As of October 26, 2026, GLM-5.2 is the cheaper API on UberLLM: $0.0020 per million input tokens and $0.2640 per million output, versus $1.10 / $6.60 for GPT-5.5 — about 96% less on a blended 3:1 token mix. Both are reached through one OpenAI-compatible key and routed to the cheapest healthy seller, with no UberLLM fee added, so the price you see is the price you pay. Choose GLM-5.2 to cut cost; choose GPT-5.5 when its capabilities fit your task better.
GPT-5.5 vs GLM-5.2, side by side
| Spec | GPT-5.5 | GLM-5.2 |
|---|---|---|
| Price · input / 1M | $1.10 | $0.0020 |
| Price · output / 1M | $6.60 | $0.2640 |
| Context length | 1,000,000 | 1,048,576 |
| Max output tokens | 128,000 | 32,768 |
| Input modalities | text, image | text |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | — |
| Reasoning | — | Yes |
| Cheapest seller | UberLLM | UberLLM |
| % off list | 78% off | 94% off |
Live prices via UberLLM, routed to the cheapest healthy seller. The price shown has no UberLLM fee added. Updated October 26, 2026.
GPT-5.5 vs GLM-5.2 — FAQ
Is GPT-5.5 or GLM-5.2 cheaper?
GLM-5.2 is cheaper on a blended token mix, by about 96%. UberLLM routes every request to the cheapest healthy seller and bills the price shown, with no fee added.
What's the price difference between GPT-5.5 and GLM-5.2?
GPT-5.5: $1.10 in / $6.60 out per 1M tokens. GLM-5.2: $0.0020 in / $0.2640 out per 1M tokens. That's roughly a 96% blended difference. Prices are live; UberLLM adds no fee.
Can I use both GPT-5.5 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.