Back to models
Model · xAI
xAI

Grok 4.20

xai/grok-4.20
Try in Agents

xAI's latest flagship model with 2M context and agentic tool calling

reasoningvisioncachinglegacy
Specs
Context
2M
Max output
16K
Provider
xAI
Input
$1.25/ 1M tokens
Output
$2.50/ 1M tokens
Cache read
$0.200/ 1M tokens
Try it
Chat with Grok 4.20Terramind API
⌘+Enter to run
Code
import { streamText } from "ai";
import { createOpenAICompatible } from "@ai-sdk/openai-compatible";

const terramind = createOpenAICompatible({
  name: "terramind",
  baseURL: "https://terramind.com/api/v1",
  apiKey: process.env.TERRAMIND_API_KEY!,
});

const result = streamText({
  model: terramind("grok-4.20"),
  prompt: "Why is the sky blue?",
});

for await (const chunk of result.textStream) {
  process.stdout.write(chunk);
}

Want to run this in your app? Grab an API key · Full chat reference

More by xAI
ModelContextInOutCapabilities
xAIxai/grok-4.1-fast1M$0.200$0.500
visioncaching
xAIxai/grok-4.5500K$2.00$6.00
reasoningvisioncaching
xAIxai/grok-4.6500K$2.00$6.00
reasoningvisioncaching
xAIxai/grok-4.7500K$2.00$6.00
reasoningvisioncaching
xAIxai/grok-build-0.1256K$1.00$2.00
reasoningvisioncaching
xAIxai/grok-imagine0$0$0
editreference images