MiniMax M3 vs Grok 4.20 Beta
minimax/minimax-m3 · x-ai/grok-4.20-beta
As of November 4, 2026, MiniMax M3 is the cheaper API on UberLLM: $0.0170 per million input tokens and $0.0682 per million output, versus $0.1750 / $0.3500 for Grok 4.20 Beta, about 82% 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 MiniMax M3 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 200,000 tokens), which can matter for long-document work.
MiniMax M3 vs Grok 4.20 Beta, side by side
| Spec | MiniMax M3 | Grok 4.20 Beta |
|---|---|---|
| Price · input / 1M | $0.0170 | $0.1750 |
| Price · output / 1M | $0.0682 | $0.3500 |
| Context length | 200,000 | 2,000,000 |
| Max output tokens | 32,768 | 128,000 |
| Input modalities | text, image | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | — | Yes |
| % off list | 94.3% 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 4, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
MiniMax M3 vs Grok 4.20 Beta — FAQ
Is MiniMax M3 or Grok 4.20 Beta cheaper?
MiniMax M3 is cheaper on a blended token mix, by about 82%. 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 MiniMax M3 and Grok 4.20 Beta?
MiniMax M3: $0.0170 in / $0.0682 out per 1M tokens. Grok 4.20 Beta: $0.1750 in / $0.3500 out per 1M tokens. That's roughly a 82% blended difference. Prices are live; UberLLM adds no fee.
Can I use both MiniMax M3 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.