OpenCode Zen's GPT-5-Codex AI model offers developers a powerful tool with a 400,000 token context window and advanced reasoning capabilities. With support for text input, vision tasks, and function calling, this model is ideal for complex projects requiring deep understanding and nuanced responses. Priced at $1.25/M input and $10/M output tokens, it's a cost-effective solution for cutting-edge AI development.

Key Specifications

Context Window

400K tokens

Max Output Tokens

128K tokens

Input Pricing

$1.25

per million tokens

Output Pricing

$10.00

per million tokens

Capabilities

Text Generation
Vision
Function Calling
Advanced Reasoning
File Attachments

Additional Details

Provider: OpenCode Zen
Release Date: August 7, 2025
Advanced Reasoning: Supported
Supported Input Types: text, image

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