x-ai/grok-4.20

x-ai· 2M ctx

API onlytool callreasoningstructured quant: unknown

spread (output)

4.8×

$2.50 – $12.00 · 5 providers

5 providers priced

Provider	Input	Output	Cache rd	Blended
Kilo Gateway relay router	$1.25	$2.50	$0.200	$0.696
OpenRoutertiered unknown	$1.25	$2.50	$0.200	$0.696
Venice AItiered unknown	$1.42	$2.83	$0.230	$0.791
NanoGPT relay router	$2.00	$6.00	$1.00	$1.73
Ofoxoutlier relay router	$4.00	$12.00	$0.400	$2.44

Cheapest (output)

Kilo Gateway

$2.50 /M

opencode.json

{
  "provider": {
    "kilo": {
      "npm": "@ai-sdk/openai-compatible",
      "options": {
        "baseURL": "https://api.kilo.ai/api/gateway"
      },
      "models": {
        "x-ai/grok-4.20": {}
      }
    }
  }
}

Set KILO_API_KEY in your environment. Generated — verify against the OpenCode docs.

Output $/M over time7-day preview

Median line, min–max band. Pre-2026-09 points are catalog-recorded dates from models.dev git history, not provider effective dates.

Full price history & dynamics

This is a 7-day preview. Sign in for 30 days free; the full series and export are the API subscription.

Data: models.dev (MIT), snapshot 2026-09-20. Prices are vendor-published; verify before purchase. Methodology.