DeepSeek V4 Pro vs Kimi K3.1 Pro

DeepSeek V4 and Kimi K3.1 Pro at a glance

DeepSeek V4 is a DeepSeek model family with 2 variants (Pro and Flash) available in Quad Chat, with up to 1M tokens of context, tool calling and adjustable reasoning. Kimi K3.1 Pro is a Moonshot AI model available in Quad Chat, with up to 1.05M tokens of context, image input, tool calling and adjustable reasoning. This page compares specifications and plan availability from the Quad Chat model catalog. It does not publish benchmark scores, because quality depends on your task; the quickest fair test is to send the same prompt to both models in one Quad Chat conversation. Where a family has several variants, the head-to-head below uses the top variant (the one needing the highest plan, then the highest output price): DeepSeek V4 Pro for DeepSeek V4.

DeepSeek V4 Pro vs Kimi K3.1 Pro

Top variant of each family, side by side. Lab: DeepSeek V4 Pro DeepSeek, Kimi K3.1 Pro Moonshot AI. Plan needed: DeepSeek V4 Pro Free, Kimi K3.1 Pro Go ($8/month). Context window: DeepSeek V4 Pro 1M tokens, Kimi K3.1 Pro 1.05M tokens. Max output: DeepSeek V4 Pro 384K tokens, Kimi K3.1 Pro 1.05M tokens. API input price: DeepSeek V4 Pro $0.66 per 1M, Kimi K3.1 Pro $2.00 per 1M. API output price: DeepSeek V4 Pro $1.98 per 1M, Kimi K3.1 Pro $10.00 per 1M. Image input: DeepSeek V4 Pro No, Kimi K3.1 Pro Yes. Tool calling: DeepSeek V4 Pro Yes, Kimi K3.1 Pro Yes. Reasoning: DeepSeek V4 Pro Yes, adjustable (low, high, max), Kimi K3.1 Pro Yes, adjustable (low, high, max). Privacy lane: DeepSeek V4 Pro Private Lane (Zero Data Retention), Kimi K3.1 Pro Private Lane (Zero Data Retention).

Cheapest DeepSeek V4 vs cheapest Kimi K3.1 Pro

The lowest-priced variant of each family, for everyday use. Lab: DeepSeek V4 Flash DeepSeek, Kimi K3.1 Pro Moonshot AI. Plan needed: DeepSeek V4 Flash Free, Kimi K3.1 Pro Go ($8/month). Context window: DeepSeek V4 Flash 1M tokens, Kimi K3.1 Pro 1.05M tokens. Max output: DeepSeek V4 Flash 384K tokens, Kimi K3.1 Pro 1.05M tokens. API input price: DeepSeek V4 Flash $0.076 per 1M, Kimi K3.1 Pro $2.00 per 1M. API output price: DeepSeek V4 Flash $0.15 per 1M, Kimi K3.1 Pro $10.00 per 1M. Image input: DeepSeek V4 Flash No, Kimi K3.1 Pro Yes. Tool calling: DeepSeek V4 Flash Yes, Kimi K3.1 Pro Yes. Reasoning: DeepSeek V4 Flash Yes, adjustable (low, medium, high), Kimi K3.1 Pro Yes, adjustable (low, high, max). Privacy lane: DeepSeek V4 Flash Private Lane (Zero Data Retention), Kimi K3.1 Pro Private Lane (Zero Data Retention).

Choose DeepSeek V4 or Kimi K3.1 Pro

Each point below comes from a real difference in the catalog data. Choose DeepSeek V4 if: You want the lower API list price at the top tier: DeepSeek V4 Pro lists at $0.66 in / $1.98 out against $2.00 in / $10.00 out for Kimi K3.1 Pro, about 5.1× less per output token. You want a budget variant: DeepSeek V4 Flash is the cheapest in its family at $0.076 in / $0.15 out, below Kimi K3.1 Pro at $2.00 in / $10.00 out. You want to start on a lower plan: DeepSeek V4 has a variant on the Free plan (no credit card), while Kimi K3.1 Pro starts at Go ($8/month). You want top-tier access for less: DeepSeek V4 Pro needs Free, while Kimi K3.1 Pro needs Go ($8/month). You like choosing a size: DeepSeek V4 comes in 2 variants (DeepSeek V4 Pro and DeepSeek V4 Flash), against 1. Choose Kimi K3.1 Pro if: You need very long replies in one go: it can write up to 1.05M tokens, against 384K. You attach screenshots, photos or scans: Kimi K3.1 Pro supports image input, DeepSeek V4 Pro does not. Their context windows are within 10% of each other (1M and 1.05M tokens). You do not have to choose: Quad Chat lets you switch between DeepSeek V4 and Kimi K3.1 Pro in the same conversation, or ask both at once and compare the answers.

Every DeepSeek V4 and Kimi K3.1 Pro variant

All selectable variants of both families. Click a header to sort. DeepSeek V4: DeepSeek V4 Pro (Free), DeepSeek V4 Flash (Free). Kimi K3.1 Pro: Kimi K3.1 Pro (Go).

Frequently asked questions

Is DeepSeek V4 or Kimi K3.1 Pro cheaper?

At provider list prices, DeepSeek V4 Pro is cheaper at the top tier ($0.66 in / $1.98 out against $2.00 in / $10.00 out per million tokens). 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.

Which has the larger context window, DeepSeek V4 or Kimi K3.1 Pro?

Kimi K3.1 Pro reaches 1.05M tokens, against 1M for DeepSeek V4, according to the model catalog Quad Chat routes through. Files, pasted text and earlier messages all count toward the window.

Which Quad Chat plan do I need for DeepSeek V4 and Kimi K3.1 Pro?

All DeepSeek V4 variants need the Free plan. Kimi K3.1 Pro needs the Go ($8/month) plan. Plans are cumulative, and every plan shares one monthly credit balance (100 on Free up to 25,000 on Max).

Do DeepSeek V4 and Kimi K3.1 Pro support images, tools and reasoning?

DeepSeek V4 Pro: image input no, tool calling yes, reasoning yes. Kimi K3.1 Pro: image input yes, tool calling yes, reasoning yes. Other variants in each family can differ, as the variant table shows.

Can I use DeepSeek V4 and Kimi K3.1 Pro in the same chat?

Yes. In Quad Chat you can switch between models mid-conversation without losing your files or context, or send one prompt to both and compare the answers side by side, which is the most reliable way to decide between them for your own work. Side-by-side comparison is included on every plan.

Is DeepSeek V4 or Kimi K3.1 Pro more private in Quad Chat?

Both top variants run on the Private Lane, routed to providers under Zero Data Retention terms. Quad Chat does not train models on your conversations either way.