reroute

SpaceXAI: Grok 4.20

x-ai/grok-4.20
Compare API Try this model

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...

Modalities
In / Out Price
$1.25 / $2.50 per 1M
Context
2M
Released
Mar 31, 2026
Knowledge Cutoff
Sep 2025

API

Reroute speaks the OpenAI Chat Completions format. Point any OpenAI SDK at https://reroute.wtf/api/v1 and use x-ai/grok-4.20 as the model.

You need an API key
Keys start with sk-rr-v1- and are shown once.
Create API key
curl https://reroute.wtf/api/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $REROUTE_API_KEY" \
  -d '{
  "model": "x-ai/grok-4.20",
  "messages": [
    { "role": "user", "content": "What is the meaning of life?" }
  ]
}'

Streaming

Set stream: true to receive server-sent events. The final chunk carries usage and cost.

curl -N https://reroute.wtf/api/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $REROUTE_API_KEY" \
  -d '{ "model": "x-ai/grok-4.20", "stream": true,
        "messages": [{ "role": "user", "content": "Count to five" }] }'