OpenAI
Chatgpt 5.5
Updated: September 2026
GPT-5.5 is OpenAI's frontier model for complex professional workloads with stronger reasoning and reliability than 5.4. It supports text and image inputs with a 1M context window for long-horizon reasoning and coding.
Specifications
- Context
- 1M
- Input Modalities
- Image, Text, File
- Output Modalities
- Text
- Input
- $5/M
- Output
- $30/M
Capabilities
VISIONTHINKINGCODINGWRITING
Similarly Priced Models
| Model | Provider | Context | Input Price | Output Price |
|---|---|---|---|---|
| Claude Fable 5.1 (batch) | Anthropic | 1M | $5/M | $25/M |
| Claude Opus 5 | Anthropic | 1M | $5/M | $25/M |
| Claude Opus 5 | Anthropic | 1M | $5/M | $25/M |
| GPT-5.6 Sol | OpenAI | 1M | $5/M | $30/M |
| GPT-5.6 Sol | OpenAI | 1M | $5/M | $30/M |