Intelligence Index
0134.7
> 75% OF MODELS
OpenAI
Chatgpt 5.1 Codex
Updated: July 2026
GPT-5.1 variant tuned for code and multimodal inputs.
Specifications
- Context
- 400K
- Input
- $1.25/M
- Output
- $10/M
Capabilities
CODINGVISION
Similarly Priced Models
| Model | Provider | Context | Input Price | Output Price |
|---|---|---|---|---|
| Grok 4.3 | xAI | 1M | $1.25/M | $2.5/M |
| Chatgpt 5.1 (Reasoning) | OpenAI | 400K | $1.25/M | $10/M |
| Chatgpt 5.1 | OpenAI | 128K | $1.25/M | $10/M |
| Chatgpt 5 (Reasoning) | OpenAI | 400K | $1.25/M | $10/M |
| Chatgpt 5 Codex | OpenAI | 400K | $1.25/M | $10/M |
Performance Metrics
Average Response Performance
- Output Speed
- 194.8 tok/s
- Time To First Token
- 7.67s
- Time To First Answer Token
- 7.67s
- End To End Response Time
- 10.24s
DATA SOURCE: Artificial Analysis