# OpenAI Codex vs OPT — Fit & Features

Canonical: https://trutool.co/compare/openai-codex-vs-opt
Author: Snehil (https://trutool.co/authors/snehil)

Compare OpenAI Codex and OPT by use case, features, limitations, and evaluation questions.

## Compare fit, features, and limitations

### OpenAI Codex
AI assistance for software engineering.
Best fit: Developers and engineering teams considering OpenAI Codex for this job: AI assistance for software engineering.
- AI assistance for software engineering
Before you choose: Test repository access, generated-code correctness, test quality, command permissions, and review effort in the exact plan you intend to use.
Pricing: https://openai.com/codex
- [Read OpenAI Codex profile](https://trutool.co/tools/openai-codex): Read OpenAI Codex profile

### OPT
We’re on a journey to advance and democratize artificial intelligence through open source and open science.
Best fit: People and teams evaluating ai coding assistants for a specific workflow.
- Core product workflow
Before you choose: Test a representative task, inspect outputs, and confirm integrations, permissions, data handling, licensing, and current costs.
Pricing: https://huggingface.co/pricing
- [Read OPT profile](https://trutool.co/tools/opt): Read OPT profile