OpenAI plans & included models

Every OpenAI plan, the models each one includes, and how many tokens of each model a month really buys.

Data updated 2026-10-08 · How real prices are computed

As of 2026-10-08, OpenAI offers 6 plans ($20–$200 a month) covering 8 models from 1 maker. The lowest real price is GPT 5.6 Luna on ChatGPT Pro 20x at about $0.00142 per million tokens.

Plans: 63 subscriptions · 3 metered APIs
Models: 8from 1 maker
Monthly fee: $20–$200subscriptions
Lowest real price: $0.00142/MTokGPT 5.6 Luna

Type: Official (own models only)
Makers: OpenAI
Website: openai.com

OpenAI plans at a glance

Plans by monthly fee
Plan	Billing	Monthly fee	Models	Lowest real $/MTok
ChatGPT Plus	Subscription	$20/mo	8	$0.00217 GPT-6 Luna
ChatGPT Pro 5x	Subscription	$100/mo	5	$0.00283 GPT 5.6 Luna
ChatGPT Pro 20x	Subscription	$200/mo	5	$0.00142 GPT 5.6 Luna
GPT-5.6 Luna API	Metered API	—	1	$0.0304 GPT 5.6 Luna
GPT-5.6 Sol API	Metered API	—	1	$0.588 GPT 5.6 Sol
GPT-5.6 Terra API	Metered API	—	1	$0.304 GPT 5.6 Terra

What each plan includes

Real price = monthly fee ÷ tokens you can actually use in a month, per model. Allowances of different models in one plan are alternatives and must not be added up.

ChatGPT Plus $20/mo

Models included in ChatGPT Plus, cheapest first
Model	Maker	Monthly tokens	Real $/MTok	vs API	Confidence	Data date
GPT-6 Luna	OpenAI	9.203B	$0.00217	—	High	2026-09-27~2026-09-28	Evidence →
GPT 5.6 Luna	OpenAI	7.058B	$0.00283	10.7×	High	2026-09-08	Evidence →
GPT 5.6 Terra	OpenAI	1.192B	$0.01679	18.1×	Medium	2026-07-30	Evidence →
GPT-6 Sol	OpenAI	1.1B	$0.01818	—	High	2026-09-24	Evidence →
GPT-6.1 Sol	OpenAI	0.87B	$0.02299	—	High	2026-09-30	Evidence →
GPT 5.6 Sol	OpenAI	0.616B	$0.03247	18.1×	Medium	2026-07-30	Evidence →
GPT 5.5	OpenAI	0.477B	$0.04196	18.1×	Medium	2026-07-30	Evidence →
GPT-6 Astra	OpenAI	0.159B	$0.1258	—	High	2026-09-11	Evidence →

ChatGPT Pro 5x $100/mo

Models included in ChatGPT Pro 5x, cheapest first
Model	Maker	Monthly tokens	Real $/MTok	vs API	Confidence	Data date
GPT 5.6 Luna	OpenAI	35.291B	$0.00283	10.7×	Medium	2026-09-08	Evidence →
GPT 5.6 Terra	OpenAI	5.957B	$0.01679	18.1×	Medium	2026-07-30	Evidence →
GPT 5.6 Sol	OpenAI	3.08B	$0.03247	18.1×	Medium	2026-07-30	Evidence →
GPT 5.5	OpenAI	2.383B	$0.04197	18.1×	Medium	2026-07-30	Evidence →
GPT-6 Astra	OpenAI	0.91B	$0.1099	—	Low	2026-07-30~2026-09-21	Evidence →

ChatGPT Pro 20x $200/mo

Models included in ChatGPT Pro 20x, cheapest first
Model	Maker	Monthly tokens	Real $/MTok	vs API	Confidence	Data date
GPT 5.6 Luna	OpenAI	141.163B	$0.00142	21.5×	Medium	2026-09-08	Evidence →
GPT 5.6 Terra	OpenAI	24.955B	$0.00801	37.9×	Medium	2026-06-10~2026-09-06	Evidence →
GPT 5.6 Sol	OpenAI	12.902B	$0.0155	37.9×	High	2026-06-10~2026-09-06	Evidence →
GPT 5.5	OpenAI	9.982B	$0.02004	37.9×	Medium	2026-06-10~2026-09-06	Evidence →
GPT-6 Astra	OpenAI	3.812B	$0.05247	—	Medium	2026-09-07~2026-09-21	Evidence →

GPT-5.6 Luna API Metered API

Models included in GPT-5.6 Luna API, cheapest first
Model	Maker	Monthly tokens	Real $/MTok	vs API	Confidence	Data date
GPT 5.6 Luna	OpenAI	—	$0.0304	—	High	2026-09-05	Evidence →

GPT-5.6 Sol API Metered API

Models included in GPT-5.6 Sol API, cheapest first
Model	Maker	Monthly tokens	Real $/MTok	vs API	Confidence	Data date
GPT 5.6 Sol	OpenAI	—	$0.588	—	High	2026-09-05	Evidence →

GPT-5.6 Terra API Metered API

Models included in GPT-5.6 Terra API, cheapest first
Model	Maker	Monthly tokens	Real $/MTok	vs API	Confidence	Data date
GPT 5.6 Terra	OpenAI	—	$0.304	—	High	2026-09-05	Evidence →

Frequently asked questions

Which OpenAI plan is cheapest per token?

GPT 5.6 Luna on ChatGPT Pro 20x has the lowest real price, about $0.00142 per million tokens ($200/month for roughly 141.163B tokens).

Which models does OpenAI include?

8 models from OpenAI: GPT 5.6 Sol, GPT 5.6 Luna, GPT-6 Astra, GPT-6 Sol, GPT-6 Luna, GPT-6.1 Sol, GPT 5.6 Terra, GPT 5.5.

How much do OpenAI plans cost?

ChatGPT Plus $20/mo, ChatGPT Pro 5x $100/mo, ChatGPT Pro 20x $200/mo.

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