GPT 5.3 Codex
OpenAIgpt-5.3-codex
Released Feb 5, 2026
Providers
2
Context
400K
Input
$1.75/M
Output
$14.00/M
BAA-eligiblePHI requires a signed BAA from Concentrate and HIPAA-enabled organization.
Aliases:gpt-5-3-codexchatgpt-5.3-codexgpt53-codex
OpenAI's GPT-5.3-Codex is the most capable agentic coding model, combining frontier coding performance with reasoning capabilities. Features mid-task steering and 25% faster inference than GPT-5.2-Codex.
azure/gpt-5.3-codexQuantUnspecified
- Input
- $1.75/M
- Output
- $14.00/M
- Context
- 400K
- Max out
- 128K
- Cache read
- $0.17/M
- Cache write
- $1.75/M
- Thinking out
- $14.00/M
FlexPriority / Fast
openai/gpt-5.3-codexQuantUnspecified
- Input
- $1.75/M
- Output
- $14.00/M
- Context
- 400K
- Max out
- 128K
- Cache read
- $0.17/M
- Cache write
- $1.75/M
- Thinking out
- $14.00/M
Flex