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Models / xAI

Grok 4.3

GA

Current flagship/recommended model for chat and coding per docs.x.ai/developers/models. Aliases: grok-4.3-latest, grok-latest. Modality 'text, image -> text' per official model page. Reasoning model (supports function calling, structured outputs, reasoning). Cached input $0.20/M confirmed on official model page. Max output tokens not published on the docs page (third-party sources describe 'no output token limit' but this is not officially stated). Knowledge cutoff not explicitly stated on the 4.x model page; the main models page only states the Nov 2024 cutoff for 'Grok 3 and Grok 4'. Release

Provider
xAI
Status
GA
Input price
$1.25 / 1M tokens
Output price
$2.50 / 1M tokens
Cached input
$0.2 / 1M tokens
Blended price
$1.56 / 1M tokens
Context window
1,000,000 tokens (1M)
Max output
—
Modality
text-in, image-in, text-out
Knowledge cutoff
—
Released
30 Apr 2026
API string
grok-4.3

Source: xAI official documentation ↗

See also

Compare Grok 4.3 with…

Grok 4.3 vs Claude Opus 4.8→

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