GPT-6
GPT-6 is an OpenAI model family with 3 variants (Astra, Sol and Luna) available in Quad Chat, with up to 1.05M tokens of context, image input, tool calling and adjustable reasoning.
GPT-6 at a glance
| Lab | OpenAI |
|---|---|
| Available on | Free plan for some variants; all from Pro |
| Context window | Up to 1.05M tokens |
| Max output | Up to 128K tokens |
| Image input | Yes |
| Tool calling | Yes |
| Reasoning | Yes |
| Privacy lane | Private (Zero Data Retention) |
GPT-6 variants
| Model | Context | Plan | API list price per 1M tokens (in / out) |
|---|---|---|---|
| GPT-6 Astra | 1.05M | Pro plan and up | $10.00 / $50.00 |
| GPT-6 Sol | 1.05M | Pro plan and up | $2.00 / $10.00 |
| GPT-6 Luna | 1.05M | Free plan | $0.10 / $0.50 |
How to use GPT-6 in Quad Chat
- Create a free account or sign in.
- Open the model picker and choose GPT-6.
- Ask, attach files, or compare the answer with another model.
Frequently asked questions
Can I use GPT-6 for free?
Partly. GPT-6 Luna is on the Free plan, which needs no credit card. GPT-6 Astra and GPT-6 Sol need the Pro plan ($15/month) or higher. Every plan shares one monthly credit balance across all models.
What is the context window of GPT-6?
Context windows differ by variant: GPT-6 Astra 1.05M, GPT-6 Sol 1.05M, GPT-6 Luna 1.05M tokens, according to the model catalog Quad Chat routes through. Files, pasted text and earlier messages all count toward the window.
Does GPT-6 support images, tools and reasoning?
GPT-6 accepts images as input, so you can attach screenshots, photos and scanned pages. It supports tool calling. It can reason before it answers, with adjustable effort (low, medium, high, xhigh and max). You can switch to another model in the same conversation at any time.
Is GPT-6 private in Quad Chat?
GPT-6 runs on the Quad Chat Private Lane, routed to providers under Zero Data Retention terms. Quad Chat does not train models on your conversations, encrypts chats in transit and at rest, and lets you export or delete them at any time.
How much does GPT-6 cost in Quad Chat?
Quad Chat plans have a flat monthly price and draw usage from shared credits, not a per-token bill. The model picker shows an estimate before you send. For reference, the provider's API list price is from $0.10 to $10.00 per million input tokens across variants.
Can I compare GPT-6 with other models?
Yes. Send one prompt to GPT-6 and one or two other models, such as GPT-6.1 Sol, GPT-5.6 and GPT-5.5, and compare the answers side by side in the same thread. You can also switch models mid-conversation without losing your files or context.
Related models
- GPT-6.1 Sol — OpenAI, Pro plan and up
- GPT-5.6 — OpenAI, Free plan for some variants; all from Ultra
- GPT-5.5 — OpenAI, Ultra plan and up for some variants; all from Max
- GPT-5.4 — OpenAI, Free plan for some variants; all from Max
- Gemini 3.8 Flash — Google, Pro plan and up
- Claude Opus 5.5 — Anthropic, Ultra plan and up
- Kimi K3 — Moonshot AI, Free plan
- Muse Spark 1.3 — Meta, Free plan