xAI: Grok 4.5
x-ai/grok-4.5
ReasoningToolsJSONVision
Intelligence
—
Design Elo
—
Speed
78
101st fastest
Latency
844ms
first token
Input price
$2.00
243rd cheapest
Context
500K
How it compares
Faster than68%
of all ranked models
Cheaper than20%
of all ranked models
Overview
Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
Providers & pricing (2)
| Provider | In $/M | Out $/M | Context | Uptime |
|---|---|---|---|---|
| xAI | $2.00 | $6.00 | 500K | 97.3% |
| xAI | $2.00 | $6.00 | 500K | 96.9% |
Specifications
Context window500K
Max output—
Knowledge cutoff—
Input modalitiestext, image, file
Output modalitiestext
Prompt caching—
Cache read price$0.500/M
ModeratedNo
Grok 4.5 FAQ
How much does Grok 4.5 cost?
Grok 4.5 costs $2.00 per million input tokens and $6.00 per million output tokens via OpenRouter, making it 243rd cheapest of 304 paid models.
How fast is Grok 4.5?
Grok 4.5 generates around 78 tokens per second with 844ms time-to-first-token (p50), the 101st fastest tracked model.
What is Grok 4.5's context window?
Grok 4.5 supports a 500K-token context window. It accepts text, image, file input.