Grok 4.3 vs GLM 5.3 Flash
x-ai/grok-4.3 · z-ai/glm-5.3-flash
As of November 7, 2026, GLM 5.3 Flash is the cheaper API on UberLLM: $0.0020 per million input tokens and $0.0067 per million output, versus $0.0124 / $0.0248 for Grok 4.3, about 75% 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 Flash to cut cost; choose Grok 4.3 when its capabilities fit your task better.
Grok 4.3 vs GLM 5.3 Flash, side by side
| Spec | Grok 4.3 | GLM 5.3 Flash |
|---|---|---|
| Price · input / 1M | $0.0124 | $0.0020 |
| Price · output / 1M | $0.0248 | $0.0067 |
| Context length | 1,000,000 | 1,048,576 |
| Max output tokens | 128,000 | 131,072 |
| Input modalities | text, image | text, image, video |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 99% off | 99.2% off |
| First token, median (7 days) | — | 4.2 s (11,388 requests) |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 7, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Grok 4.3 vs GLM 5.3 Flash — FAQ
Is Grok 4.3 or GLM 5.3 Flash cheaper?
GLM 5.3 Flash is cheaper on a blended token mix, by about 75%. 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 Grok 4.3 and GLM 5.3 Flash?
Grok 4.3: $0.0124 in / $0.0248 out per 1M tokens. GLM 5.3 Flash: $0.0020 in / $0.0067 out per 1M tokens. That's roughly a 75% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Grok 4.3 and GLM 5.3 Flash 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.