Grok-4.20 API Pricing — $2.00/M input, $6.00/M output
High-speed variant of Grok-4.20: optimized for instant multimodal responses.
Speed
Tokens / sec
104
TTFT
290 ms
Rank
#16 of 31
$ / M ÷ t/s
$0.03
Measured with 5 runs on a fixed prompt — see the full methodology.
Cost at scale
| Tokens / month | Est. cost (blended 3:1) |
|---|---|
| 100,000 | $0.30 |
| 1,000,000 | $3.00 |
| 10,000,000 | $30.00 |
| 100,000,000 | $300.00 |
How Grok-4.20 compares
Grok-3 Mini — $0.26/MGrok 4.3 — $1.56/MGrok-3 — $2.50/MGrok-4.20 Reasoning — $3.00/MGrok-4.20 Reasoning — $3.00/MMistral Large 3 — $3.00/MQwen 3.8 Max — $2.80/M
FAQ
Is Grok-4.20 cheaper than Grok-4.20 Reasoning?
Grok-4.20 costs $3.00/M blended tokens, Grok-4.20 Reasoning costs $3.00/M — Grok-4.20 Reasoning is cheaper.
How much does 1 million tokens cost with Grok-4.20?
At a 3:1 input:output ratio, 1 million blended tokens costs approximately $3.00. Pure input costs $2.00/M; pure output costs $6.00/M.
Who provides Grok-4.20?
Grok-4.20 is served by xAI. Pricing was last verified on 2026-04-06 against https://docs.x.ai/docs/overview#pricing.