xAI · mid
Grok 4.3: API pricing 2026
xAI's published general-purpose API tier at $1.25/$2.50 for prompts under 200K tokens (rates step up above that threshold). Distinctive low output cost makes it attractive for output-heavy tasks like summarisation. x.ai/api is bot-blocked to automated fetch; the $1.25/$2.50 rate was re-confirmed still listed as of Sept 2026 via current pricing aggregators (secondary). xAI has since released a newer flagship above this tier.
Input $/M tokens
$1.25
Output $/M tokens
$2.50
Cost / task
$0.0063
3k in + 1k out
Tier
mid
xAI
Cost at common task volumes
| 1,000 tasks / yr | $6.25 |
| 10,000 tasks / yr | $62.50 |
| 100,000 tasks / yr | $625 |
| 1,000,000 tasks / yr | $6,250 |
Token shape: 3,000 input + 1,000 output per task. No prompt caching. Real cost varies with your actual prompt shape.
Source
↗ https://x.ai/apiVerified 2026-09-15.
Compare with other LLMs