Intelligence Index
0137.9
> 63% OF MODELS
xAI
Grok 4.3
Updated: September 2026
Grok 4.3 is a reasoning-focused model built for high-accuracy agentic workflows. It supports text and image inputs with configurable reasoning effort and a 1M context window.
Specifications
- Context
- 1M
- Input Modalities
- Image, Text, File
- Output Modalities
- Text
- Input
- $1.25/M
- Output
- $2.5/M
Capabilities
VISIONWEBTHINKINGCODING
Similarly Priced Models
| Model | Provider | Context | Input Price | Output Price |
|---|---|---|---|---|
| Chatgpt 5.1 Codex | OpenAI | 400K | $1.25/M | $10/M |
| Chatgpt 5.1 (Reasoning) | OpenAI | 400K | $1.25/M | $10/M |
| Chatgpt 5.1 (Reasoning) | OpenAI | 400K | $1.25/M | $10/M |
| Chatgpt 5.1 Codex | OpenAI | 400K | $1.25/M | $10/M |
| Chatgpt 5 (Reasoning) | OpenAI | 400K | $1.25/M | $10/M |
Performance Metrics
Coding Index
0242.2
> 42% OF MODELS
Agentic Index
0324.2
> 47% OF MODELS
Average Response Performance
- Output Speed
- 112.7 tok/s
- Time To First Token
- 18.46s
- Time To First Answer Token
- 18.46s
- End To End Response Time
- 22.89s
DATA SOURCE: Artificial Analysis