# OpenAI Codex

> AI Coding Partner

Source: https://dailyaitools.ai/tools/openai-codex/ (dailyaitools, a tracker of AI tools; no ratings or reviews)

## Key facts

- Category: Code
- Price: Free plan, then $8/mo
- Free plan: Yes, free plan, then $8/mo
- Works on: Web, API
- Website: https://openai.com/codex/
- Verification: Checked against the vendor's pages on November 5, 2026, prices included.

## What it is

Codex is an AI tool developed by OpenAI that functions as a coding assistant. It is integrated into OpenAI's ChatGPT platform, with access levels varying across different subscription tiers, including Free, Go, Plus, and Pro plans. The tool supports coding and research activities, leveraging advanced AI models like GPT-6 Astra for higher-tier users. It provides capabilities such as code completion and is associated with developer API access.

## Plans

| Plan | Price | Free-plan limit or note |
| --- | --- | --- |
| Free | Free | Limited Codex access |
| Go | $8/mo | Limited Codex access |
| Plus | $20/mo | Expanded Codex usage |
| Pro | $100/mo | Longer Codex and ChatGPT Work sessions |

Prices as printed on https://chatgpt.com/pricing/. Nothing is converted or annualized.

## Features

- AI coding partner functionality
- Variable access levels through ChatGPT plans
- Support for coding-related research
- Integration with advanced GPT models
- Developer API access via monthly credits

## Good fit for

- Coding assistance
- Developer productivity
- AI-powered code generation

## Questions

### Is OpenAI Codex free?

Yes, OpenAI Codex has a free plan (Limited Codex access), as of November 5, 2026. Paid plans start at $8/mo.

### How much does OpenAI Codex cost?

As of November 5, 2026, OpenAI Codex lists 4 plans: Free, Go at $8/mo, Plus at $20/mo, Pro at $100/mo.

### How does Codex integrate with other tools?

The source text does not mention specific third-party integrations for Codex.

### What AI models power Codex?

Codex is powered by various GPT models, with Pro plan users benefiting from Pro reasoning powered by GPT-6 Astra.

### Does Codex support deep research capabilities?

Yes, Codex access is associated with deep research capabilities, ranging from limited in free plans to maximum in the Pro plan.

## Sources

- https://openai.com/codex/
- https://chatgpt.com/pricing/

Listed November 5, 2026.