Kimi K2 Thinking vs Grok 4.20 Beta
moonshotai/kimi-k2-thinking · x-ai/grok-4.20-beta
As of November 3, 2026, Kimi K2 Thinking is the cheaper API on UberLLM: $0.0059 per million input tokens and $0.0248 per million output, versus $0.1750 / $0.3500 for Grok 4.20 Beta, about 93% 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 K2 Thinking to cut cost; choose Grok 4.20 Beta when context size wins. Grok 4.20 Beta carries the larger context window (2,000,000 vs 256,000 tokens), which can matter for long-document work.
Kimi K2 Thinking vs Grok 4.20 Beta, side by side
| Spec | Kimi K2 Thinking | Grok 4.20 Beta |
|---|---|---|
| Price · input / 1M | $0.0059 | $0.1750 |
| Price · output / 1M | $0.0248 | $0.3500 |
| Context length | 256,000 | 2,000,000 |
| Max output tokens | 65,536 | 128,000 |
| Input modalities | text | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | — | Yes |
| Reasoning | Yes | Yes |
| % off list | 99% off | 86% off |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 3, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Kimi K2 Thinking vs Grok 4.20 Beta — FAQ
Is Kimi K2 Thinking or Grok 4.20 Beta cheaper?
Kimi K2 Thinking is cheaper on a blended token mix, by about 93%. 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 K2 Thinking and Grok 4.20 Beta?
Kimi K2 Thinking: $0.0059 in / $0.0248 out per 1M tokens. Grok 4.20 Beta: $0.1750 in / $0.3500 out per 1M tokens. That's roughly a 93% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Kimi K2 Thinking and Grok 4.20 Beta 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.