OpenAI: GPT-5.3-Codex
6.7 / 10
400K context
Proprietary
About this model
GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-art results...
Benchmark Scores
SWE-Bench-Pro
56.8
Terminal-Bench-2.1
77.3
Technical Specs
- Architecture: text+image+file->text
- Context Window: 400,000 tokens
- Input Modalities: text
Hardware Requirements
- API-only (no local hardware needed)
Pricing
| Input | Output | Currency |
|---|---|---|
| 1.75 / 1M tokens | 14.0 / 1M tokens | USD |