Kimi K3 vs GLM 5.3 Flash
moonshotai/kimi-k3 · z-ai/glm-5.3-flash
As of October 31, 2026, GLM 5.3 Flash is the cheaper API on UberLLM: $0.0008 per million input tokens and $0.0070 per million output, versus $0.0032 / $0.2475 for Kimi K3, about 97% less when output is 3 tokens for every input token. These are the median prices buyers paid over the last 24 hours. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose GLM 5.3 Flash to cut cost; choose Kimi K3 when its capabilities fit your task better.
Kimi K3 vs GLM 5.3 Flash, side by side
| Spec | Kimi K3 | GLM 5.3 Flash |
|---|---|---|
| Price · input / 1M | $0.0032 | $0.0008 |
| Price · output / 1M | $0.2475 | $0.0070 |
| Context length | 1,000,000 | 1,048,576 |
| Max output tokens | 131,072 | 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 | 98% off | 95% off |
| First token, median (7 days) | 2.9 s (937 requests) | 7.1 s (170 requests) |
Median prices buyers paid on UberLLM over the last 24 hours. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated October 31, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Kimi K3 vs GLM 5.3 Flash — FAQ
Is Kimi K3 or GLM 5.3 Flash cheaper?
GLM 5.3 Flash is cheaper on a blended token mix, by about 97%. 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 Kimi K3 and GLM 5.3 Flash?
Kimi K3: $0.0032 in / $0.2475 out per 1M tokens. GLM 5.3 Flash: $0.0008 in / $0.0070 out per 1M tokens. That's roughly a 97% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Kimi K3 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.