OpenAI
GPT-5.3 Chat (latest)
Chat-tuned GPT model for conversational assistance, writing, and tool workflows
openai/gpt-5.3-chat-latest
Context
128K
Output
16.4K
Released
2026-03-03
Knowledge cutoff
2025-08-31
Types
InputTextImage
OutputText
Reasoning
—
Tool use
Supported
Structured output
Supported
Attachments
Supported
Open weights
—
Provider pricing
Merge Gateway
InTextImagePDF
OutText
- Price
- $1.75 / $14.00
- Context
- 128K
- Status
- Stable