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Grok 4.3 API Pricing — $1.25/M input, $2.50/M output

xAI general purpose flagship: highly capable, extremely fast, 1M context.

Input
$1.25/M
Output
$2.50/M
Blended
$1.56/M
Provider
Verified 2026-05-19source

Speed

Tokens / sec
98
TTFT
320 ms
Rank
#17 of 31
$ / M ÷ t/s
$0.02
Measured with 5 runs on a fixed prompt — see the full methodology.

Cost at scale

Tokens / monthEst. cost (blended 3:1)
100,000$0.16
1,000,000$1.56
10,000,000$15.63
100,000,000$156.25

How Grok 4.3 compares

Grok-3 Mini$0.26/MGrok-3$2.50/MGrok-4.20 Reasoning$3.00/MGrok-4.20$3.00/MGPT-5.4 Mini$1.69/MGemini 3.1 Flash$1.69/MAmazon Nova Pro$1.40/M
See all xAI models →

Head-to-head comparisons

Grok 4.3 vs GPT-5.6 SolGrok 4.3 vs Claude Opus 4.8Grok 4.3 vs Gemini 3.1 ProGrok 4.3 vs Grok-3

FAQ

Is Grok 4.3 cheaper than GPT-5.4 Mini?

Grok 4.3 costs $1.56/M blended tokens, GPT-5.4 Mini costs $1.69/M — Grok 4.3 is cheaper.

How much does 1 million tokens cost with Grok 4.3?

At a 3:1 input:output ratio, 1 million blended tokens costs approximately $1.56. Pure input costs $1.25/M; pure output costs $2.50/M.

Who provides Grok 4.3?

Grok 4.3 is served by xAI. Pricing was last verified on 2026-05-19 against https://docs.x.ai/docs/overview#pricing.

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