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xAI: Grok 4.20

x-ai/grok-4.20
Mar 31, 20262M context$2.00/M in · $6.00/M outReasoning

Description

Grok 4.20 is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truthful responses.

Reasoning can be enabled/disabled using the reasoning enabled parameter in the API. Learn more in our docs

Specifications

Provider
x-ai
Context Length
2M
Max Output
—
Modality
Intextimagefile
Outtext

Pricing

Type≤200K>200K
Input$2.00$4.00
Output$6.00$12.00
Cache Read$0.20$0.40
Web Search$0.0050 / call

Quick Start

curl https://api.ominigate.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-omg-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "x-ai/grok-4.20",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'
xAI: Grok 4.20 — Pricing & API on OminiGate