Grok 4.5
SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
ReasoningTool UseImplicit CachingFile InputVision (Image)Web Search
index.ts
import { streamText } from 'ai'
const result = streamText({ model: 'xai/grok-4.5', prompt: 'Why is the sky blue?'})More models by xAI
| Model |
|---|
| 256K | 0.6s | 162tps | $1/M | $2/M | Read: $0.2/M Write: — | $5/K + input costs | +2 |  | 05/20/2026 | |||
| 1M | 1.2s | 138tps | $1.25/M | $2.50/M | Read: $0.2/M Write: — | $5/K + input costs | +3 |  | 04/30/2026 | |||
| 2M | 0.3s | 118tps | $1.25/M | $2.50/M | Read: $0.2/M Write: — | $5/K + input costs | +2 | | 03/10/2026 | |||
| 2M | 0.4s | 198tps | $1.25/M | $2.50/M | Read: $0.2/M Write: — | $5/K + input costs | +3 | | 03/10/2026 | |||
| 1M | 0.3s | 152tps | $0.20/M | $0.50/M | Read:$0.05/M Write:— | — | +1 | | 11/19/2025 | |||
| 1M | 2.4s | 159tps | $0.20/M | $0.50/M | Read:$0.05/M Write:— | — | +2 | | 11/19/2025 |