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OpenAI Codex

https://openai.com/codex/(opens in a new tab)

ChatGPT Go

estimated confidence: inferred from marketing claims, not published numbers
$8/mo
Monthly token capNo published cap(no published cap)
Model rate / 1M tokens$4.80(GPT-5.6 Sol at 65% in / 35% out)
Included models
GPT-5.6 SolGPT-5.6 TerraGPT-5.6 LunaGPT-5.3-Codex
LimitsFair-use policy — no published numeric cap
Effective from1 Jan 2026
Last verified22 Sep 2026
Marketing claims
  • $8/mo
  • Codex included; upgrade prompted at the limit
Sources
https://help.openai.com/en/articles/11369540-using-codex-with-your-chatgpt-plan

ChatGPT Plus

estimated confidence: inferred from marketing claims, not published numbers
$20/mo
Monthly token capNo published cap(no published cap)
Model rate / 1M tokens$24.00(GPT-6 Astra at 65% in / 35% out)
Included models
GPT-6 AstraGPT-5.6 SolGPT-5.6 TerraGPT-5.6 LunaGPT-5.3-Codex
LimitsFair-use policy — no published numeric cap
Effective from1 Jan 2026
Last verified22 Sep 2026
Marketing claims
  • $20/mo
  • Published allowance: 10-100 Sol local messages per 5-hour window, 25-200 Terra, 250-2,000 Luna
  • Credits for overage at $0.04 each
Sources
https://help.openai.com/en/articles/11369540-using-codex-with-your-chatgpt-planhttps://openai.com/index/gpt-6-astra/https://www.notebookcheck.net/GPT-6-Astra-is-on-ChatGPT-Plus-but-only-in-Work-and-Codex.1391574.0.html

ChatGPT Pro 5x

partial confidence: partly published, partly inferred
$100/mo
Monthly token capNo published cap(no published cap)
Model rate / 1M tokens$24.00(GPT-6 Astra at 65% in / 35% out)
Included models
GPT-6 AstraGPT-6 Astra ProGPT-5.6 SolGPT-5.6 TerraGPT-5.6 LunaGPT-5.3-Codex
Usage multiplier5× of ChatGPT Plus
Effective from1 Jan 2026
Last verified22 Sep 2026
Marketing claims
  • $100/mo
  • 5x higher Codex usage than Plus
Sources
https://help.openai.com/en/articles/11369540-using-codex-with-your-chatgpt-planhttps://openai.com/index/gpt-6-astra/https://www.notebookcheck.net/GPT-6-Astra-is-on-ChatGPT-Plus-but-only-in-Work-and-Codex.1391574.0.html

ChatGPT Pro 20x

partial confidence: partly published, partly inferred
$200/mo
Monthly token capNo published cap(no published cap)
Model rate / 1M tokens$24.00(GPT-6 Astra at 65% in / 35% out)
Included models
GPT-6 AstraGPT-6 Astra ProGPT-5.6 SolGPT-5.6 TerraGPT-5.6 LunaGPT-5.3-Codex
Usage multiplier20× of ChatGPT Plus
Effective from1 Jan 2026
Last verified22 Sep 2026
Marketing claims
  • $200/mo
  • 20x higher Codex usage than Plus
Sources
https://help.openai.com/en/articles/11369540-using-codex-with-your-chatgpt-planhttps://openai.com/index/gpt-6-astra/https://www.notebookcheck.net/GPT-6-Astra-is-on-ChatGPT-Plus-but-only-in-Work-and-Codex.1391574.0.html