DeepSeek models in Quad Chat

DeepSeek models in Quad Chat at a glance

Quad Chat includes 2 DeepSeek model families with 3 selectable variants, from DeepSeek V4.1 Flash to DeepSeek V4. 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. 3 of the 3 variants are on the Free plan, which needs no credit card: DeepSeek V4.1 Flash, DeepSeek V4 Pro and DeepSeek V4 Flash. Context windows run from 1M tokens (DeepSeek V4 Pro) to 1.05M tokens (DeepSeek V4.1 Flash). At provider list prices, input costs $0.076 to $0.66 and output $0.15 to $1.98 per million tokens across the family; DeepSeek V4 Flash 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.

DeepSeek model families

Click a column header to sort. Each family name opens its own page with the full spec sheet. 2 families: DeepSeek V4.1 Flash, DeepSeek V4.

Every DeepSeek 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: DeepSeek V4.1 Flash (Free, 1.05M context, $0.30 in / $1.20 out); DeepSeek V4 Pro (Free, 1M context, $0.66 in / $1.98 out); DeepSeek V4 Flash (Free, 1M context, $0.076 in / $0.15 out).

Which plan unlocks which DeepSeek model

Plans are cumulative: a higher plan opens everything the lower ones do. Free: DeepSeek V4.1 Flash, DeepSeek V4 Pro and DeepSeek V4 Flash. Monthly shared credits by plan: Free 100, Go 1,200, Pro 2,000, Ultra 5,000, Max 25,000.

How to choose between DeepSeek 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: DeepSeek V4 Flash at $0.076 in / $0.15 out per million tokens, on the Free plan. Highest tier by plan: DeepSeek V4 Pro, which needs the Free plan and lists at $0.66 in / $1.98 out. Largest context window: 1.05M tokens on DeepSeek V4.1 Flash. Longest single reply: 384K tokens on DeepSeek V4 Pro. Reasoning: every DeepSeek variant here can reason before it answers; DeepSeek V4.1 Flash, DeepSeek V4 Pro and DeepSeek V4 Flash offer adjustable effort. Image input: 1 of 3 variants accepts images; text only: DeepSeek V4 Pro and DeepSeek V4 Flash. 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 DeepSeek models are free in Quad Chat?

All 3 DeepSeek variants are on the Free plan, which needs no credit card: DeepSeek V4.1 Flash, DeepSeek V4 Pro and DeepSeek V4 Flash. Free accounts get 100 shared credits a month across every model.

Which plan do I need for DeepSeek V4 Pro?

DeepSeek V4 Pro is the highest-tier DeepSeek variant in Quad Chat and needs the Free plan or higher. 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 DeepSeek context window in Quad Chat?

DeepSeek V4.1 Flash has the largest context window in the DeepSeek 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 1M tokens.

How much do DeepSeek models cost per million tokens?

At provider list prices, input tokens range from $0.076 to $0.66 per million and output tokens from $0.15 to $1.98 per million across these variants; DeepSeek V4 Flash is the cheapest overall. Quad Chat does not bill per token: plans are a flat monthly price with shared credits.

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

Yes. Every DeepSeek 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 DeepSeek app?

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