Kimi K3 vs GLM 5.1
moonshotai/kimi-k3 · z-ai/glm-5.1
As of October 31, 2026, Kimi K3 and GLM 5.1 cost about the same through UberLLM: $0.0032/$0.2475 and $0.0714/$0.2244 per million input/output tokens, the median buyers paid over the last 24 hours. Both work with one OpenAI-compatible key and UberLLM adds no fee, so pick on capabilities and context rather than price. Kimi K3 carries the larger context window (1,000,000 vs 200,000 tokens), which can matter for long-document work.
Kimi K3 vs GLM 5.1, side by side
| Spec | Kimi K3 | GLM 5.1 |
|---|---|---|
| Price · input / 1M | $0.0032 | $0.0714 |
| Price · output / 1M | $0.2475 | $0.2244 |
| Context length | 1,000,000 | 200,000 |
| Max output tokens | 131,072 | 24,000 |
| Input modalities | text, image | text |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | — |
| Reasoning | Yes | Yes |
| % off list | 98% off | 95% off |
| First token, median (7 days) | 2.9 s (937 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 5.1 — FAQ
Is Kimi K3 or GLM 5.1 cheaper?
GLM 5.1 is cheaper on a blended token mix. 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 5.1?
Kimi K3: $0.0032 in / $0.2475 out per 1M tokens. GLM 5.1: $0.0714 in / $0.2244 out per 1M tokens. Prices are live; UberLLM adds no fee.
Can I use both Kimi K3 and GLM 5.1 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.