Shortcut ChatShortcut Chat
Get started

AI model comparison

Hy4 preview vs DeepSeek V4 Flash 0423

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

tencent logo

Tencent

Hy4 preview

Tencent: Hy4 preview is a mixture-of-experts model from Tencent, with 49B active parameters out of 770B total.

Input / 1M
$0.75
Output / 1M
$2.25
Context
1.05M
deepseek logo

DeepSeek

DeepSeek V4 Flash 0423

DeepSeek V4 Flash is an efficiency-optimized Mixture-of-Experts model from DeepSeek with 284B total parameters and 13B activated parameters, supporting a 1M-token context window.

Input / 1M
$0.01
Output / 1M
$1.28
Context
1.05M

At a glance

Quick verdict

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

Lower price

deepseek logo

DeepSeek V4 Flash 0423

4.0x cheaper for a typical chat

Higher intelligence score

Tie

Not enough benchmark data

Larger context window

Tie

1.05M vs 1.05M tokens

Newer release

tencent logo

Hy4 preview

Released August 28, 2026

Benchmarks

Benchmark scores

Independent scores from Artificial Analysis. Higher is better.

Intelligence index

tencent logoHy4 previewNot available
deepseek logoDeepSeek V4 Flash 042324.4

Coding index

tencent logoHy4 previewNot available
deepseek logoDeepSeek V4 Flash 042352

Agentic index

tencent logoHy4 previewNot available
deepseek logoDeepSeek V4 Flash 042326.3

Pricing

Hy4 preview vs DeepSeek V4 Flash 0423 API pricing

Per-token API rates. Cheaper option highlighted.

Metrictencent logoHy4 previewdeepseek logoDeepSeek V4 Flash 0423
Input tokensPer 1M tokens$0.75$0.01
Output tokensPer 1M tokens$2.25$1.28
Cached input (read)Per 1M tokens$0.04$0.01
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

tencent logoHy4 preview$2.63
deepseek logoDeepSeek V4 Flash 0423$0.66

Coding task

30K in, 4K out

tencent logoHy4 preview$31.52$10.14 cached
deepseek logoDeepSeek V4 Flash 0423$5.42$5.42 cached

Long document summary

150K in, 2K out

tencent logoHy4 preview$117.09$10.17 cached
deepseek logoDeepSeek V4 Flash 0423$4.05$4.05 cached

Specs

Context window and capabilities

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

Metrictencent logoHy4 previewdeepseek logoDeepSeek V4 Flash 0423
Context window1.05M tokens1.05M tokens
Max output64K tokens944K tokens
Input typesTextText
Output typesTextText
Reasoning effort levelsHigh, Low, NoneExtra high, High
Default reasoning effortHighHigh
Release dateAugust 28, 2026April 24, 2026

Features

Supported features

API features available for each model.

Metrictencent logoHy4 previewdeepseek logoDeepSeek V4 Flash 0423
Tool callingSupportedSupported
Structured outputsSupportedSupported
JSON modeSupportedSupported
ReasoningSupportedSupported
TemperatureSupportedSupported
Stop sequencesSupportedSupported
Deterministic seedSupportedSupported
Verbosity controlNot supportedNot supported

Our take

DeepSeek V4 Flash 0423 is 4.0x cheaper for a typical chat. 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 Hy4 preview or DeepSeek V4 Flash 0423 cheaper?

DeepSeek V4 Flash 0423 is cheaper for a typical chat (2K input tokens and 500 output tokens). DeepSeek V4 Flash 0423 costs $0.01 per 1M input tokens and $1.28 per 1M output tokens, while Hy4 preview costs $0.75 per 1M input tokens and $2.25 per 1M output tokens.

Which has a bigger context window, Hy4 preview or DeepSeek V4 Flash 0423?

Hy4 preview supports up to 1.05M tokens of context, compared with 1.05M for DeepSeek V4 Flash 0423.

Can I use Hy4 preview and DeepSeek V4 Flash 0423 at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Hy4 preview and DeepSeek V4 Flash 0423 answer side by side and keep the better response.

tencent logodeepseek logo

Why choose? Ask both.

Send one prompt to Hy4 preview and DeepSeek V4 Flash 0423 at the same time. Compare the answers side by side and keep the best one.

Get startedSee a preview