Gemini 3.8 Flash vs GLM 5.3
google/gemini-3.8-flash · z-ai/glm-5.3
As of November 4, 2026, GLM 5.3 is the cheaper API on UberLLM: $0.0003 per million input tokens and $0.0145 per million output, versus $0.0082 / $0.0412 for Gemini 3.8 Flash, about 67% 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 Gemini 3.8 Flash when context size wins. Gemini 3.8 Flash carries the larger context window (1,048,576 vs 1,000,000 tokens), which can matter for long-document work.
Gemini 3.8 Flash vs GLM 5.3, side by side
| Spec | Gemini 3.8 Flash | GLM 5.3 |
|---|---|---|
| Price · input / 1M | $0.0082 | $0.0003 |
| Price · output / 1M | $0.0412 | $0.0145 |
| Context length | 1,048,576 | 1,000,000 |
| Max output tokens | 65,536 | 131,072 |
| Input modalities | text, image, video, audio, file | text |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | — |
| Reasoning | Yes | Yes |
| % off list | 99% off | 99.6% off |
| First token, median (7 days) | — | 4.2 s (620 requests) |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 4, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Gemini 3.8 Flash vs GLM 5.3 — FAQ
Is Gemini 3.8 Flash or GLM 5.3 cheaper?
GLM 5.3 is cheaper on a blended token mix, by about 67%. 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 Gemini 3.8 Flash and GLM 5.3?
Gemini 3.8 Flash: $0.0082 in / $0.0412 out per 1M tokens. GLM 5.3: $0.0003 in / $0.0145 out per 1M tokens. That's roughly a 67% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Gemini 3.8 Flash 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.