Codex

Codex Plus usage limits

GPT-5.6 Sol: 15–90 local messages / 5h; GPT-5.6 Terra: 20–110 local messages / 5h; GPT-5.6 Luna: 50–280 local messages / 5h. The five-hour window is shared where applicable, and additional weekly limits may apply.

Official source: Codex pricing and usage limits

Current plans and access

• Free

  $0.00/month

  Models

  Not explicitly listed for this plan

  Usage

  Intended for quick coding tasks; exact usage varies by task and account.

  Source: Codex pricing

• Go

  $8.00/month

  Models

  Not explicitly listed for this plan

  Usage

  Intended for lightweight coding tasks; exact usage varies by task and account.

  Source: Codex pricing

• Plus

  $20.00/month

  Models

  GPT-5.6 Sol, GPT-5.6 Terra, GPT-5.6 Luna

  Usage

  GPT-5.6 Sol: 15–90 local messages / 5h; GPT-5.6 Terra: 20–110 local messages / 5h; GPT-5.6 Luna: 50–280 local messages / 5h. The five-hour window is shared where applicable, and additional weekly limits may apply.

  • Includes web, CLI, IDE extension, iOS, cloud review, and Slack integrations.

  Source: Codex pricing and usage limits, Using Codex with your ChatGPT plan

• Pro

  $100.00/month

  Starts at $100/month

  Models

  GPT-5.6 Sol, GPT-5.6 Terra, GPT-5.6 Luna, GPT-5.3-Codex-Spark

  Usage

  Choose 5x or 20x higher Codex rate limits than Plus.

  • The Spark model is described as a research preview.

  Source: Codex pricing, Codex models

• Business

  $20.00/month

  $20/user/month with 2+ users, billed annually; $25 monthly

  Models

  GPT-5.6 Sol, GPT-5.6 Terra, GPT-5.6 Luna

  Usage

  Shared product usage with optional credit extensions; exact limits depend on workspace and task.

  • Enterprise and Edu pricing is available by contacting sales.

  Source: Codex pricing, Codex models

Access and sources

Platforms / access

ChatGPT desktop app, Web, Codex CLI, IDE extension, Codex cloud, iOS

Official sources

• Codex pricing
• Codex models
• Codex pricing and usage limits
• Using Codex with your ChatGPT plan

Verification notes

• ChatGPT Work and Codex share usage under supported ChatGPT plans.
• The current pricing table still displays legacy GPT-5.4 and GPT-5.4 mini rows, but the Help Center says those models are no longer available in Codex for users signed in with ChatGPT from August 31, 2026. GPT-5.6 Terra replaces GPT-5.4, and GPT-5.6 Luna replaces GPT-5.4 mini.

1. Sep 1, 2026, 8:49 AM UTC
   availability
   GPT-5.4 and GPT-5.4 mini retired from Codex for ChatGPT-signed-in users on August 31, 2026.

   GPT-5.4; GPT-5.4 mini→GPT-5.6 Terra replaces GPT-5.4; GPT-5.6 Luna replaces GPT-5.4 mini
2. Sep 1, 2026, 4:30 AM UTC
   other
   Initial verified Codex pricing baseline recorded from the official pricing page.

   No prior tracker baseline→Free $0; Go $8; Plus $20; Pro from $100; Business $20/user/month billed annually