Grok 4.3
xAI · released 2026 · proprietary API
- 1M context
- Text + image in
xAI's widest context at 1M tokens and its cheapest reasoning tier; native real-time X / web search.
Context window
1M
1,000,000 tokens
Input price
$1.25
per 1M tokens
Output price
$2.50
per 1M tokens
Blended
$1.56
3:1 in:out mix
Weights
Proprietary
API only
Released
2026
xAI
Long-context / tier pricing — Doubles above 200K prompt tokens, to $2.50 in / $5.00 out; cached input $0.20/1M. 20% batch discount, which Grok 4.6 does not get. Listed prices are the base rate for prompts up to ~200K tokens.
Where it ranks
Of 40 models tracked.
Cost to run
#15
of 40
Input price
#17
of 40
Context window
#9(tied)
of 40
Compare with
The nearest models by blended cost to run.
Put it to work
Specs from BitByteCore's hand-verified Frontier Ledger (v2026-09-26), this row verified 3 Sep 2026 against xAI's official pricing ↗. Model pricing moves fast, so confirm with xAI before you rely on a figure.