Grok 4.3 vs Grok 4.20
Side-by-side API pricing comparison · xAI vs xAI
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Grok 4.3 is 113.3% cheaper on blended cost ($1.88 vs $4.00/Mtok)
Grok 4.3
by xAI
Current flagshipInput
$1.25/Mtok
Output
$2.50/Mtok
✓ Cheaper
| Blended avg | $1.88/Mtok |
|---|---|
| Context | 1M tokens |
| Modality | text, image |
| Parameters | Proprietary |
| Released | Apr 1, 2026 |
Grok 4.20
by xAI
Current mid tierInput
$2.00/Mtok
Output
$6.00/Mtok
| Blended avg | $4.00/Mtok |
|---|---|
| Context | 256K tokens |
| Modality | text, image |
| Parameters | Proprietary |
| Released | Oct 1, 2025 |
Cost at scale — 1M tokens (50/50 input/output)
| Volume | Grok 4.3 | Grok 4.20 | Savings |
|---|---|---|---|
| 1M tokens | $1.88 | $4 | $2.13 (53.3%) |
| 10M tokens | $18.75 | $40 | $21.25 (53.1%) |
| 100M tokens | $187.5 | $400 | $212.5 (53.1%) |
| 1000M tokens | $1875 | $4000 | $2125 (53.1%) |
Summary
Grok 4.3 by xAI costs $1.25/Mtok input and $2.50/Mtok output, with a 1M-token context window. It supports text, image input.
Grok 4.20 by xAI costs $2.00/Mtok input and $6.00/Mtok output, with a 256K-token context window. It supports text, image input.
On a blended cost basis, Grok 4.3 is 113.3% cheaper than Grok 4.20. It also has a larger context window.
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.