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Grok 4.20 API price
xai/grok-4.20
The cheapest Grok 4.20 API is $1.25/M input at LiteLLM index (community) - all 2 providers compared below, per 1M tokens.
MidxAI1M context2 sellers
Input
$1.25
per 1M tokens · LiteLLM index (community)
up to $2.50
Output
$2.50
per 1M tokens · LiteLLM index (community)
up to $5.00
Where to buy it
Cheapest Grok 4.20 API providers compared - 2 sellers, from $1.25/M.
Cost calculator
| Provider | Input $/M | Output $/M | Cached in | Uptime | Your cost |
|---|---|---|---|---|---|
| LiteLLM index (community) | 1.25cheapest | 2.50 | 0.200 | - | |
| > 200k tokens ctx | 2.50 | 5.00 | 0.400 | - | |
| xAI (via OpenRouter) (zdr) | 1.25 | 2.50 | 0.200 | 99.6% | |
| Priority | 2.50 | 5.00 | 0.400 | 100% |
2.0× between the cheapest and the dearest of 2 sellers.
Against its tier
- This model$3.75
- Cheapest · Nemotron 3 Super 120B A12B$0.485
- Tier median · Grok 4.20$3.75
- Dearest · GPT 5.5 Cyber$87.50
#17 of 32 mid · cheaper than 48%
Details
- Context window
- 1M1,000,000 tokens
- Developer
- xAI
- Intelligence
- 38.0Reasoning
- Sellers
- 22.0× spread
- Cached input
- $0.20where the source publishes one
- Cheapest at
- LiteLLM index (community)
- Combined
- $3.75in + out per 1M
- Last checked
- 2026-08-30
- Availability
- 99.79%median of 4 OpenRouter endpoints, last 30 min