MoonshotAI: Kimi K3.1 Pro vs GPT 5.4 Nano
moonshotai/kimi-k3.1-pro · openai/gpt-5.4-nano
As of November 1, 2026, GPT 5.4 Nano is the cheaper API on UberLLM: $0.0390 per million input tokens and $0.2437 per million output, versus $0.1000 / $0.5000 for MoonshotAI: Kimi K3.1 Pro, about 52% 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 GPT 5.4 Nano 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 400,000 tokens), which can matter for long-document work.
MoonshotAI: Kimi K3.1 Pro vs GPT 5.4 Nano, side by side
| Spec | MoonshotAI: Kimi K3.1 Pro | GPT 5.4 Nano |
|---|---|---|
| Price · input / 1M | $0.1000 | $0.0390 |
| Price · output / 1M | $0.5000 | $0.2437 |
| Context length | 1,048,576 | 400,000 |
| Max output tokens | 943,718 | 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 | 95% off | 80.5% off |
| First token, median (7 days) | 8.3 s (514 requests) | — |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 1, 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 GPT 5.4 Nano — FAQ
Is MoonshotAI: Kimi K3.1 Pro or GPT 5.4 Nano cheaper?
GPT 5.4 Nano is cheaper on a blended token mix, by about 52%. 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 GPT 5.4 Nano?
MoonshotAI: Kimi K3.1 Pro: $0.1000 in / $0.5000 out per 1M tokens. GPT 5.4 Nano: $0.0390 in / $0.2437 out per 1M tokens. That's roughly a 52% blended difference. Prices are live; UberLLM adds no fee.
Can I use both MoonshotAI: Kimi K3.1 Pro and GPT 5.4 Nano 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.