Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
| Provider | x-ai |
|---|---|
| Input price | $1.25 / 1M tokens |
| Output price | $2.50 / 1M tokens |
| Context window | 2000k tokens |
| Max output | Not specified |
| Modalities | text, image, file |
| Model ID | x-ai/grok-4.20 |
A 1,000-token prompt with a 500-token answer on SpaceXAI: Grok 4.20 costs roughly $0.00250. Use the OpenRouter cost calculator to price your own prompt across 400+ models, or the token counter to measure prompt length first.
PromNest stores your prompt library and lets you run any prompt on SpaceXAI: Grok 4.20 with your own OpenRouter key — including side-by-side comparison with other models. Browse 1,000+ ready-made prompt templates to start.