About
Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
Related Models
Pricing
Input
$2.00
per 1M tokens
Output
$6.00
per 1M tokens
Blended
$3.00
per 1M tokens
Cheaper than 21% of models. Median price is $0.58/1M tokens.
Cost Calculator
Tokens per day1M
100K100M
Daily
$3.00
Monthly
$90.00
vs. Similar Models
Grok 4.20 0309 (Reasoning)
$3.000%
Mistral: Mistral Medium 3.5
$3.000%
Grok 4.20 0309 (Non-reasoning)
$3.000%
Grok 4.20 0309 v2 (Non-reasoning)
$3.000%
Performance
Context Window
500K
tokens
Larger than 80% of models
Context Window Comparison
xAI: Grok Latest
500KSame
OpenAI: GPT-5.3-Codex
400K1.3x smaller
OpenAI: GPT-5.2
400K1.3x smaller