OpenAI
GPT-5.3 Codex Spark
Coding-optimized GPT model for repository edits, reviews, and agentic software work
openai/gpt-5.3-codex-spark
Context
128K
Output
32K
Released
2026-02-05
Knowledge cutoff
2025-08-31
Types
InputTextImagePDF
OutputText
Reasoning
Supported
Tool use
Supported
Structured output
Supported
Attachments
Supported
Open weights
—
Provider pricing
Poe
InText
OutText
- Price
- Free / Free
- Context
- 128K
- Status
- Stable