AI model comparison

DeepSeek V3.1 Terminus vs DeepSeek V3 0324

Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.

DeepSeek-V3.1 Terminus is an update to [DeepSeek V3.1](/deepseek/deepseek-chat-v3.1) that maintains the model's original capabilities while addressing issues reported by users, including language consistency and agent capabilities, further optimizing the model's

Input / 1M
$0.27
Output / 1M
$1
Context
164K

DeepSeek V3, a 685B-parameter, mixture-of-experts model, is the latest iteration of the flagship chat model family from the DeepSeek team.

Input / 1M
$0.29
Output / 1M
$1.14
Context
164K

At a glance

Quick verdict

How the two models stack up on the things people ask about most.

Lower price

deepseek logo

DeepSeek V3.1 Terminus

1.1x cheaper for a typical chat

Higher intelligence score

deepseek logo

DeepSeek V3.1 Terminus

14.8 vs 9.7 on Artificial Analysis

Larger context window

Tie

164K vs 164K tokens

Newer release

deepseek logo

DeepSeek V3.1 Terminus

Released September 22, 2025

Benchmarks

Benchmark scores

Independent scores from Artificial Analysis. Higher is better.

Intelligence index

deepseek logoDeepSeek V3.1 Terminus14.8
deepseek logoDeepSeek V3 03249.7

Coding index

deepseek logoDeepSeek V3.1 Terminus43.5
deepseek logoDeepSeek V3 032421.2

Agentic index

deepseek logoDeepSeek V3.1 Terminus6.8
deepseek logoDeepSeek V3 03240.8

Pricing

DeepSeek V3.1 Terminus vs DeepSeek V3 0324 API pricing

Per-token API rates. Cheaper option highlighted.

Metricdeepseek logoDeepSeek V3.1 Terminusdeepseek logoDeepSeek V3 0324
Input tokensPer 1M tokens$0.27$0.29
Output tokensPer 1M tokens$1$1.14
Cached input (read)Per 1M tokensNot available$0.11
Cache writePer 1M tokensNot availableNot available

What it costs in practice

Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.

Chat message

2K in, 500 out

deepseek logoDeepSeek V3.1 Terminus$1.04
deepseek logoDeepSeek V3 0324$1.15

Coding task

30K in, 4K out

deepseek logoDeepSeek V3.1 Terminus$12.10
deepseek logoDeepSeek V3 0324$13.26$7.86 cached

Long document summary

150K in, 2K out

deepseek logoDeepSeek V3.1 Terminus$42.50
deepseek logoDeepSeek V3 0324$45.78$18.78 cached

Specs

Context window and capabilities

How much each model can read, how much it can write, and what it accepts as input.

Metricdeepseek logoDeepSeek V3.1 Terminusdeepseek logoDeepSeek V3 0324
Context window164K tokens164K tokens
Max output147K tokens115K tokens
Input typesTextText
Output typesTextText
Reasoning effort levelsNot availableNot available
Default reasoning effortNot availableNot available
Release dateSeptember 22, 2025March 24, 2025

Features

Supported features

API features available for each model.

Metricdeepseek logoDeepSeek V3.1 Terminusdeepseek logoDeepSeek V3 0324
Tool callingSupportedSupported
Structured outputsSupportedSupported
JSON modeSupportedSupported
ReasoningSupportedNot supported
TemperatureSupportedSupported
Stop sequencesSupportedNot supported
Deterministic seedNot supportedSupported
Verbosity controlNot supportedNot supported

Our take

DeepSeek V3.1 Terminus is 1.1x cheaper for a typical chat. DeepSeek V3.1 Terminus scores higher on the Artificial Analysis Intelligence Index (14.8 vs 9.7). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.

FAQ

Frequently asked questions

Is DeepSeek V3.1 Terminus or DeepSeek V3 0324 cheaper?

DeepSeek V3.1 Terminus is cheaper for a typical chat (2K input tokens and 500 output tokens). DeepSeek V3.1 Terminus costs $0.27 per 1M input tokens and $1 per 1M output tokens, while DeepSeek V3 0324 costs $0.29 per 1M input tokens and $1.14 per 1M output tokens.

Which has a bigger context window, DeepSeek V3.1 Terminus or DeepSeek V3 0324?

DeepSeek V3.1 Terminus supports up to 164K tokens of context, compared with 164K for DeepSeek V3 0324.

Is DeepSeek V3.1 Terminus smarter than DeepSeek V3 0324?

On the Artificial Analysis Intelligence Index, DeepSeek V3.1 Terminus scores 14.8 and DeepSeek V3 0324 scores 9.7, putting DeepSeek V3.1 Terminus ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.

Can I use DeepSeek V3.1 Terminus and DeepSeek V3 0324 at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see DeepSeek V3.1 Terminus and DeepSeek V3 0324 answer side by side and keep the better response.

deepseek logodeepseek logo

Why choose? Ask both.

Send one prompt to DeepSeek V3.1 Terminus and DeepSeek V3 0324 at the same time. Compare the answers side by side and keep the best one.