Grok 4.20 Reasoning
$1.25
Input / MTok
$2.5
Output / MTok
Prices double for requests at or above 200k tokens.
API identifier grok-4.20-0309-reasoning · Context 1,000,000 tokens
· vendor pricing page
Full price sheet
| Metric | USD / million tokens |
|---|---|
| Input | $1.25 |
| Output | $2.5 |
Price history
| Observed | Metric | Price |
|---|---|---|
| 2026-08-07 12:23:04 | Input | $1.25 |
| 2026-08-07 12:23:04 | Output | $2.5 |
Current prices are free and always will be. The full series — every observation since we started watching, which nobody can reconstruct after the fact — is the part Pro pays for.
Changes affecting this model
launch
Grok 4.20 Reasoning launched
first observation
2026-08-07Compare with
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