MoonshotAI: Kimi K3.1 Pro vs Grok 4.3
moonshotai/kimi-k3.1-pro · x-ai/grok-4.3
As of November 7, 2026, Grok 4.3 is the cheaper API on UberLLM: $0.0124 per million input tokens and $0.0248 per million output, versus $0.1357 / $0.6785 for MoonshotAI: Kimi K3.1 Pro, about 96% 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 Grok 4.3 to cut cost; choose MoonshotAI: Kimi K3.1 Pro when context size wins. MoonshotAI: Kimi K3.1 Pro carries the larger context window (1,048,576 vs 1,000,000 tokens), which can matter for long-document work.
MoonshotAI: Kimi K3.1 Pro vs Grok 4.3, side by side
| Spec | MoonshotAI: Kimi K3.1 Pro | Grok 4.3 |
|---|---|---|
| Price · input / 1M | $0.1357 | $0.0124 |
| Price · output / 1M | $0.6785 | $0.0248 |
| Context length | 1,048,576 | 1,000,000 |
| Max output tokens | 524,288 | 128,000 |
| Input modalities | text, image, video | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 93.2% off | 99% off |
| First token, median (7 days) | 5.0 s (167 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?
MoonshotAI: Kimi K3.1 Pro vs Grok 4.3 — FAQ
Is MoonshotAI: Kimi K3.1 Pro or Grok 4.3 cheaper?
Grok 4.3 is cheaper on a blended token mix, by about 96%. 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 MoonshotAI: Kimi K3.1 Pro and Grok 4.3?
MoonshotAI: Kimi K3.1 Pro: $0.1357 in / $0.6785 out per 1M tokens. Grok 4.3: $0.0124 in / $0.0248 out per 1M tokens. That's roughly a 96% blended difference. Prices are live; UberLLM adds no fee.
Can I use both MoonshotAI: Kimi K3.1 Pro and Grok 4.3 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.