AI COMPANY · 01 / 26

OpenAI

ChatGPT, Codex and developer APIs for general AI, agentic work, coding and multimodal applications.

WHAT THEY BUILD

General-purpose AI for knowledge work, multimodal assistance, software engineering and developer-built agents.

Prompt Psychology separates the company, its user-facing products and the model or technology families underneath them so you can choose the right layer for the task.

3Products / surfaces

4Model / technology families

MODEL / TECHNOLOGY FAMILIES

GPT-5.6 SolGPT-5.6 TerraGPT-5.6 LunaGPT-5-Codex

HOW YOU ACCESS IT

ChatGPTCodexOpenAI API

STRONG FIT FOR

ReasoningCodingKnowledge workMultimodal apps

PRODUCT MAP

Apps, AI products and developer surfaces

03 entries

Assistant

ChatGPT

ChatGPT is an assistant product focused on Chat, Reasoning, Research, Voice.

Capabilities

ChatReasoningResearchVoiceImagesWork

Useful for

Chat · Reasoning · Research

Agent

Codex

Codex is an agent product focused on Coding, Repositories, Parallel agents, Automations.

Capabilities

CodingRepositoriesParallel agentsAutomations

Useful for

Coding · Repositories · Parallel agents

Developer

OpenAI API

OpenAI API is a developer product focused on Text, Reasoning, Images, Voice.

Capabilities

TextReasoningImagesVoiceToolsAgents

Useful for

Text · Reasoning · Images