x-aiVision
xAI: Grok 4.20
Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
Context
2M tokens
Input / 1M tokens
$1.25
Output / 1M tokens
$2.50
Benchmark
—
Pricing
Input tokens$1.25 per 1M tokens
Output tokens$2.50 per 1M tokens
Cache read$0.20 per 1M tokens
Technical details
Model IDx-ai/grok-4.20
Context window2M tokens
Input modalitiestext, image, file, pdf
Output modalitiestext
TokenizerGrok
Use with MegaBrain
import OpenAI from 'openai'
const client = new OpenAI({
baseURL: 'https://getmegabrain.com/api/gateway/v1',
apiKey: process.env.MEGABRAIN_API_KEY,
})
const response = await client.chat.completions.create({
model: 'x-ai/grok-4.20',
messages: [{ role: 'user', content: 'Hello!' }],
})