Today's price · per 1M tokens
Input
$1.25
per 1M tokens
Output
$2.50
per 1M tokens
Blended
$1.56
blended $/1M — 3:1 weighted input:output
Cached input
$0.200
16% of input — prompt caching
Price receipt
We read xAI's own pricing page on and found Grok 4.20 listed with a price on the same card — that read is where the number above comes from. We keep the page text we read; its content hash is 2946271551.
Overview
Older Grok SKU still available. $1.25/$2.50 per 1M tokens (cached input $0.20).
Capabilities
struck through = not supportedBenchmark performance
accuracy % · higher is betterEvery per-benchmark score we hold for this model is reported by its own vendor, so none is counted toward an accuracy average or any ranking. The percentile above is its standing across the independent composites below.
- LMSYS Chatbot Arena: 1474.5 ELO (Human preference)
- Ranks #27 of 181 comparably-measured models by percentile score, across 1 independent measurement
- Ranks #56 of 181 comparably-tested models by normalized performance per dollar
120 tokens/sec output
Source: LMSYS Chatbot Arena (UC Berkeley), xAI model card · updated · See full rankings →
Specifications
- Provider
- xAI
- Context window
- 1M tokens
- Modality
- text, image
- Parameters
- Proprietary
- Open source
- No — proprietary
- Released
- Status
- Current
- Last updated
- Tags
Availability verified: — listed on xAI's own page