Claude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/MClaude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/M
BETA
Subscribe
← Back to Index·All xAI models
xAI
xAIFrontierAUTO PROFILE

Grok 4.3

Frontier

Grok 4.3 is a general-purpose chat-tuned model. Available via xAI. 1M-token context. Mid-tier pricing.

Grok 4.3 is a frontier AI model from xAI. It costs $1.250 per million input tokens and $2.500 per million output tokens (blended $1.625/M), with a 1M-token context window.

Modalities textProvider pricing ↗API docs ↗Compare with another model →Estimate monthly cost →
INPUT
$1.250/M
per million input tokens
OUTPUT
$2.500/M
per million output tokens
BLENDED 70/30
$1.625/M
default reference rate · how it's calculated →
CONTEXT
1M
1,000,000 tokens
What it's good at
  • Solid general chat performance
  • Reasonable instruction following
Typical use cases
  • General chat
  • Drafting and rewriting
  • Personal productivity
Benchmarks
No published benchmark scores tracked for this model yet. Frontier and reasoning models from major providers have scores; smaller models and inference-host variants typically inherit the underlying open-weights score.
More from xAI
See all 8 →
Grok 4
Previous · 256K ctx
in $3.000/Mout $15.000/M
Grok 3
Frontier · 131K ctx
in $3.000/Mout $15.000/M
Grok 3 mini
Efficient · 131K ctx
in $0.300/Mout $0.500/M
Grok 3 Fast
Balanced · 131K ctx
in $5.000/Mout $25.000/M
Grok 2
Previous · 131K ctx
in $2.000/Mout $10.000/M
Grok 2 Vision
Vision · 32K ctx
in $2.000/Mout $10.000/M
Frequently asked questions

How much does Grok 4.3 cost?

Grok 4.3 costs $1.250 per million input tokens and $2.500 per million output tokens, for a blended reference rate of $1.625 per million tokens.

What is Grok 4.3's context window?

Grok 4.3 supports up to 1M tokens of context (1,000,000 tokens).

What is Grok 4.3 best for?

Grok 4.3 is well suited to Solid general chat performance, Reasonable instruction following and General chat.

Who makes Grok 4.3?

Grok 4.3 is developed and served by xAI.