9 questions answered. Every answer sourced.
GPT-6: Release Date, Models and Pricing
GPT-6 is OpenAI's current model generation. It is not one model but a family: Astra at the top, Sol in the middle and Luna for speed and low cost, with GPT-6.1 Sol added at DevDay. Here is what each one is for and what it costs.
GPTPrompts.AI Editorial
Facts checked against official announcements and documentation, October 2026 · Last updated October 2026
Affiliate link, we may earn a commission at no extra cost to you.
01 · Release
When GPT-6 came out
OpenAI rolled the GPT-6 family out in stages over September 2026.
Is GPT-6 out yet?
Yes. OpenAI launched GPT-6 Astra on September 3, 2026, followed by GPT-6 Sol and GPT-6 Luna on September 22 and GPT-6.1 Sol on September 29.
Source: OpenAI: GPT-6 Astra, a new generation of intelligence; OpenAI: Introducing GPT-6 Sol and Luna; OpenAI: Introducing GPT-6.1 Sol
What is the ChatGPT 6 release date?
There is no product called ChatGPT 6; ChatGPT runs on models. The GPT-6 models reached ChatGPT from September 3, 2026, starting with Astra for paid plans, with Sol and Luna arriving in ChatGPT Work and Codex on September 22.
Source: OpenAI: GPT-6 Astra, a new generation of intelligence; OpenAI: Introducing GPT-6 Sol and Luna
What is the newest ChatGPT model?
As of October 2026, GPT-6 Astra is OpenAI's most capable model and GPT-6.1 Sol its newest. Which one you can pick depends on your plan and the ChatGPT surface you use.
Source: OpenAI: GPT-6 Astra, a new generation of intelligence; OpenAI: Introducing GPT-6.1 Sol
02 · Models
GPT-6 Astra vs Sol vs Luna
The three tiers balance capability against cost. Most people should start with Sol.
What is GPT-6 Sol?
GPT-6 Sol is the cost-efficient high-end model in the GPT-6 family, introduced on September 22, 2026. GPT-6.1 Sol, released a week later, nearly matches Astra on agentic coding, computer use and professional work at one-fifth of Astra's token prices.
Source: OpenAI: Introducing GPT-6 Sol and Luna; OpenAI: Introducing GPT-6.1 Sol
What is GPT-6 Luna?
GPT-6 Luna is the fast, low-cost tier, priced at $0.10 per million input tokens and $0.50 per million output tokens in the API. It is the GPT-6 model available to Free and Go users in the ChatGPT desktop app.
Source: OpenAI: Introducing GPT-6 Sol and Luna; OpenAI API: Pricing
Which GPT-6 model should I use?
Use GPT-6.1 Sol for most professional and coding work, Astra when you need the best possible result on hard, long tasks, and Luna for high-volume, simple tasks where speed and cost matter most.
Source: OpenAI: Introducing GPT-6.1 Sol; OpenAI: GPT-6 Astra, a new generation of intelligence
03 · Pricing
GPT-6 pricing (GPT-6 价格)
API prices are per million tokens. ChatGPT access depends on your subscription.
How much does GPT-6 cost? (GPT-6 价格是多少？)
In the OpenAI API: GPT-6 Astra $10 input and $50 output per million tokens; GPT-6.1 Sol $2 and $10; GPT-6 Luna $0.10 and $0.50. Batch and Flex processing are half price. 中文：Astra 每百万输入/输出 token 分别为 10/50 美元，GPT-6.1 Sol 为 2/10 美元，Luna 为 0.10/0.50 美元。
Source: OpenAI API: Pricing
Which ChatGPT plan do I need for GPT-6?
Plus, Pro, Business and Enterprise include GPT-6 Astra. Sol and Luna were added to ChatGPT Work and Codex for paid plans, and Free and Go users get Luna in the desktop app. See our ChatGPT pricing guide for current plan prices.
Source: OpenAI: GPT-6 Astra, a new generation of intelligence; OpenAI: Introducing GPT-6 Sol and Luna; GPTPrompts.AI: ChatGPT pricing 2026
Did GPT-6 make the API cheaper?
For the mid tier, yes: OpenAI cut Sol and Luna API prices by 50% compared with their GPT-5.6 promotional pricing. Astra is more expensive than earlier models but OpenAI argues it often costs less per completed task.
Source: OpenAI: Introducing GPT-6 Sol and Luna; CloudZero: GPT-6 Astra pricing explained
Sources
Read and checked October 2026. Policies change, so confirm anything time-sensitive on the source page.