OpenAI: GPT-5.3-Codex
openai/gpt-5.3-codex
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...
Prompt $/1M
$1.750
Completion $/1M
$14.000
Context
400,000 tok
Best provider
131 tok/s · Artificial Analysis
Specs
- Model id
- openai/gpt-5.3-codex
- Display name
- OpenAI: GPT-5.3-Codex
- Modality
- text+image+file->text
- Tokenizer
- GPT
- Instruct type
- —
- Context length
- 400,000
- Max completion
- 128,000
- Prompt $/1M
- $1.750
- Completion $/1M
- $14.000
- Free tier
- no
Capabilities
- Function callingno
- JSON modeno
- System promptno
- Visionno
- Moderatedyes
Benchmark scores
Each axis is one benchmark, normalized to the best model in the field.
No benchmark data for this model.
Speed by provider
| Provider | tok/s |
|---|---|
| Artificial Analysis | 131 |
| OpenAIfastest | 54 |
| Azure | 47 |