OpenAI models in Quad Chat

OpenAI models in Quad Chat at a glance

Quad Chat includes 6 OpenAI model families with 12 selectable variants, from GPT-6.1 Sol to gpt-oss. Each variant below lists the plan that opens it, its context window, the longest reply it can write and the provider's API price per million tokens. 4 of the 12 variants are on the Free plan, which needs no credit card: GPT-6 Luna, GPT-5.6 Luna, gpt-oss 120B and gpt-oss 20B. The remaining 8 need a paid plan. Context windows run from 128K tokens (gpt-oss 120B) to 1.05M tokens (GPT-6.1 Sol). At provider list prices, input costs $0.03 to $30.00 and output $0.14 to $180.00 per million tokens across the family; gpt-oss 20B is the cheapest. API prices are the model provider's list prices per million tokens, shown for comparison only. Quad Chat plans have a flat monthly price and draw usage from shared credits, so you are not billed per token.

OpenAI model families

Click a column header to sort. Each family name opens its own page with the full spec sheet. 6 families: GPT-6.1 Sol, GPT-6, GPT-5.6, GPT-5.5, GPT-5.3 Codex, gpt-oss.

Every OpenAI variant: plan, context and API price

One row per selectable variant. Click a header to sort; each name opens its model page. Context and output are in tokens; prices are provider list prices per million tokens. Variants and plans: GPT-6.1 Sol (Pro, 1.05M context, $2.00 in / $10.00 out); GPT-6 Astra (Pro, 1.05M context, $10.00 in / $50.00 out); GPT-6 Sol (Pro, 1.05M context, $2.00 in / $10.00 out); GPT-6 Luna (Free, 1.05M context, $0.10 in / $0.50 out); GPT-5.6 Sol (Ultra, 1.05M context, $4.00 in / $20.00 out); GPT-5.6 Terra (Pro, 1.05M context, $2.00 in / $12.00 out); GPT-5.6 Luna (Free, 1.05M context, $0.20 in / $1.20 out); GPT-5.5 Thinking (Ultra, 1M context, $5.00 in / $30.00 out); GPT-5.5 Pro (Max, 1M context, $30.00 in / $180.00 out); GPT-5.3 Codex (Pro, 400K context, $1.75 in / $14.00 out); gpt-oss 120B (Free, 128K context, $0.10 in / $0.50 out); gpt-oss 20B (Free, 128K context, $0.03 in / $0.14 out).

Which plan unlocks which OpenAI model

Plans are cumulative: a higher plan opens everything the lower ones do. Free: GPT-6 Luna, GPT-5.6 Luna, gpt-oss 120B and gpt-oss 20B. Pro ($15/month): GPT-6.1 Sol, GPT-6 Astra, GPT-6 Sol, GPT-5.6 Terra and GPT-5.3 Codex. Ultra ($40/month): GPT-5.6 Sol and GPT-5.5 Thinking. Max ($200/month): GPT-5.5 Pro. Monthly shared credits by plan: Free 100, Go 1,200, Pro 2,000, Ultra 5,000, Max 25,000.

How to choose between OpenAI models

These pointers come straight from the catalog data above, not from benchmarks. The fastest way to decide is to send one prompt to two variants in the same chat. Lowest API cost: gpt-oss 20B at $0.03 in / $0.14 out per million tokens, on the Free plan. Highest tier by plan: GPT-5.5 Pro, which needs the Max ($200/month) plan and lists at $30.00 in / $180.00 out. Largest context window: 1.05M tokens on 7 variants including GPT-6.1 Sol. Longest single reply: 128K tokens on gpt-oss 120B. Reasoning: every OpenAI variant here can reason before it answers; GPT-6.1 Sol, GPT-6 Astra, GPT-6 Sol, GPT-6 Luna and 8 more offer adjustable effort. Image input: 10 of 12 variants accept images; text only: gpt-oss 120B and gpt-oss 20B. Privacy: every variant runs on the Quad Chat Private Lane with Zero Data Retention routing.

Prices and credits in Quad Chat

API prices are the model provider's list prices per million tokens, shown for comparison only. Quad Chat plans have a flat monthly price and draw usage from shared credits, so you are not billed per token. Cheaper variants use fewer credits per message than frontier ones, so a plan's credits do not map to a fixed number of messages. Running out of credits does not lock you out: you can wait for the next period, upgrade, or buy a one-time credit pack.

Frequently asked questions

Which OpenAI models are free in Quad Chat?

4 of the 12 OpenAI variants are on the Free plan, which needs no credit card: GPT-6 Luna, GPT-5.6 Luna, gpt-oss 120B and gpt-oss 20B. The rest need a paid plan. Free accounts get 100 shared credits a month across every model.

Which plan do I need for GPT-5.5 Pro?

GPT-5.5 Pro is the highest-tier OpenAI variant in Quad Chat and needs the Max ($200/month) plan. Every plan shares one monthly credit balance across all models, and paying yearly is up to 15% less than paying monthly.

What is the largest OpenAI context window in Quad Chat?

GPT-6.1 Sol has the largest context window in the OpenAI lineup here at 1.05M tokens, according to the model catalog Quad Chat routes through. Files, pasted text and earlier messages all count toward the window. The smallest is 128K tokens.

How much do OpenAI models cost per million tokens?

At provider list prices, input tokens range from $0.03 to $30.00 per million and output tokens from $0.14 to $180.00 per million across these variants; gpt-oss 20B is the cheapest overall. Quad Chat does not bill per token: plans are a flat monthly price with shared credits.

Can I use OpenAI models next to models from other labs?

Yes. Every OpenAI model in Quad Chat can be switched with any other model in the same conversation without losing your files or context, and you can send one prompt to several models and compare the answers side by side. See the full model comparison table to line them up against other labs.

Does Quad Chat give me the official OpenAI app?

No. Quad Chat gives you OpenAI's models inside Quad Chat's own workspace, with its search, files, projects and image and video tools. It does not include OpenAI's own apps or account-level features, and the model list changes as new versions ship.