OpenAI Codex Launches Pay-As-You-Go Pricing: 2 Million Weekly Users, 6x Growth Since January

OpenAI has introduced pay-as-you-go pricing for Codex, its AI coding agent, along with a significant price reduction for ChatGPT Business. The moves signal OpenAI's aggressive push to make AI coding tools ubiquitous across enterprises.

What's New

• Codex-only seats: No fixed seat fee — billed purely on token consumption
• No rate limits: Codex-only seats have unlimited usage
• ChatGPT Business price cut: From $25 to $20 per seat annually
• New user credits: $100 per new Codex-only team member (up to $500 per team)

Adoption Numbers

The growth metrics are striking:

• 9 million paying business users on ChatGPT
• 2 million builders using Codex every week
• Codex users within Business/Enterprise grew 6x since January 2026
• Companies like Notion, Ramp, Braintrust, and Wasmer are production users

Strategic Analysis

This pricing shift addresses several market dynamics:

1. Competitive pressure: Anthropic Claude Code, Cursor, and Windsurf are all competing for enterprise developer mindshare
2. Adoption friction: Fixed seat fees discouraged experimentation with small teams
3. Usage transparency: Token-based billing gives clearer cost visibility
4. Land and expand: Lower entry barriers to drive broader organizational adoption

Platform Expansion

Codex is also expanding its capabilities:

• Plugins: Connect Codex to existing systems and tools
• Automations: Build repeatable AI-powered workflows
• Desktop apps: Available for macOS and Windows

The $122 billion fundraise announced days earlier provides OpenAI with massive capital to subsidize growth through pricing like this.