API price
Grok 4.20 API price
By SpaceXAI. $1.25 per million input tokens, $2.50 per million output tokens on OpenRouter. Collected November 12, 2026.
- $1.25
- $2.50
- 2,000,000
- —
- March 31, 2026
- August 22, 2026
Last 90 days
Price changes
No price change in this window.
What the numbers say
- Input costs less than 27% of the 443 paid models we track.
- It has the largest context window of the 459 models we track.
Closest in price
- Gemini 2.5 Pro$1.25 / $10.00
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- Muse Spark 1.1$1.25 / $4.25
- Muse Spark 1.2$1.25 / $4.25
- Muse Spark 1.3$1.25 / $4.25
- Muse Spark Open$1.25 / $4.25