Kimi K3 vs GPT 5.4 Nano
moonshotai/kimi-k3 · openai/gpt-5.4-nano
As of November 1, 2026, Kimi K3 is the cheaper API on UberLLM: $0.0017 per million input tokens and $0.0781 per million output, versus $0.0390 / $0.2437 for GPT 5.4 Nano, about 69% 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 Kimi K3 to cut cost; choose GPT 5.4 Nano when its capabilities fit your task better.
Kimi K3 vs GPT 5.4 Nano, side by side
| Spec | Kimi K3 | GPT 5.4 Nano |
|---|---|---|
| Price · input / 1M | $0.0017 | $0.0390 |
| Price · output / 1M | $0.0781 | $0.2437 |
| Context length | 1,000,000 | 400,000 |
| Max output tokens | 131,072 | 128,000 |
| Input modalities | text, image | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 99.3% off | 80.5% off |
| First token, median (7 days) | 2.9 s (937 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?
Kimi K3 vs GPT 5.4 Nano — FAQ
Is Kimi K3 or GPT 5.4 Nano cheaper?
Kimi K3 is cheaper on a blended token mix, by about 69%. 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 GPT 5.4 Nano?
Kimi K3: $0.0017 in / $0.0781 out per 1M tokens. GPT 5.4 Nano: $0.0390 in / $0.2437 out per 1M tokens. That's roughly a 69% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Kimi K3 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.