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Flagship — best answers, highest costCommercial API
Grok 4.20 Pricing
xAI · x-ai-grok-4-20
Input / 1M tokens
$1.25
Output / 1M tokens
$2.50
Context window
2M tokens
≈ 2,667 pages of text
Max output
—
What it costs in practice
Typical request (1,200 in + 400 out tokens)$0.0025
1,000 requests / month$2.50/mo10,000 requests / month$25.00/mo100,000 requests / month$250.00/moEstimate your own workloadOpens the calculator with Grok 4.20 preloaded — adjust volume and token counts there.
Price history
Only one price point recorded so far.
The staircase chart appears once a price change is detected.
What it excels at
Handles 2M-token contexts for long-document analysis, repository-scale code review, and multi-step reasoning chains.
The business tradeoff
Narrower third-party tooling and integration ecosystem than GPT or Claude; output pricing scales quickly on high-volume generation.
Cheaper from xAI
Head-to-head
Vendor list rates, as of Jun 15, 2026 · source: openrouter · per-request examples assume 1,200 input + 400 output tokens.