Intelligence Index
0153.8
> 99% OF MODELS
xAI
Grok 4.5
Updated: July 2026
Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
Specifications
- Context
- 500K
- Input
- $2/M
- Output
- $6/M
Capabilities
VISIONTEXTWEBCODINGTHINKINGWRITING
Similarly Priced Models
| Model | Provider | Context | Input Price | Output Price |
|---|---|---|---|---|
| Claude Sonnet 5 | Anthropic | 1M | $2/M | $10/M |
| Grok 4.20 | xAI | 2M | $2/M | $6/M |
| Grok 4.20 | xAI | 2M | $2/M | $6/M |
| Gemini 3.1 Pro | Google | 1M | $2/M | $12/M |
| Gemini 3.1 Pro Preview | Google | 1M | $2/M | $12/M |
Performance Metrics
Coding Index
0272.4
> 97% OF MODELS
Agentic Index
0345.7
> 97% OF MODELS
Average Response Performance
- Output Speed
- 91.3 tok/s
- Time To First Token
- 17.42s
- Time To First Answer Token
- 17.42s
- End To End Response Time
- 22.9s
DATA SOURCE: Artificial Analysis