OpenAI19:29Feature UpdatesOfficial Docs
OpenAI Launches GPT-5.3-Codex for Advanced Coding Agents
Process coding tasks faster and cheaper, enabling easier agentic development.
Key Points
- 1Supports 400,000 token context length
- 2Maximum output of 128,000 tokens with streaming and function calls
- 3Pricing: $1.75 per 1M input, $14 per 1M output tokens
- 4Available across various APIs including Chat Completions
OpenAI released GPT-5.3-Codex for developers via Responses API and others. It delivers 25% faster processing with improved token efficiency and adjustable reasoning from low to extra-high complexity, handling complex coding efficiently.