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AI model comparison

Hy4 preview vs Kimi K3

Side by side comparison of Hy4 preview and Kimi K3 on pricing, benchmark scores, context window, and more.

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

Input / 1M
$0.83
Output / 1M
$2.50
Context
1.05M

Kimi K3 is a 2.8T parameter open-weight multimodal reasoning model from Moonshot AI.

Input / 1M
$0.24
Output / 1M
$10.80
Context
1.05M

Comparing image generators? Compare image models

At a glance

Quick verdict

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

Lower price

tencent logo

Hy4 preview

2.0x cheaper for a typical chat

Higher intelligence score

Not available

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
moonshotai logoKimi K3Not available

Coding index

tencent logoHy4 previewNot available
moonshotai logoKimi K376.2

Agentic index

tencent logoHy4 previewNot available
moonshotai logoKimi K350

Pricing

Hy4 preview vs Kimi K3 API pricing

Per-token API rates. Cheaper option highlighted.

Metrictencent logoHy4 previewmoonshotai logoKimi K3
Input tokensPer 1M tokens$0.83$0.24
Output tokensPer 1M tokens$2.50$10.80
Cached input (read)Per 1M tokens$0.04$0.21
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$2.92
moonshotai logoKimi K3$5.88

Coding task

30K in, 4K out

tencent logoHy4 preview$35.02$11.26 cached
moonshotai logoKimi K3$50.37$49.50 cached

Long document summary

150K in, 2K out

tencent logoHy4 preview$130.10$11.30 cached
moonshotai logoKimi K3$57.45$53.10 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 previewmoonshotai logoKimi K3
Context window1.05M tokens1.05M tokens
Max output64K tokens944K tokens
Input typesTextImage, Text, Video
Output typesTextText
Reasoning effort levelsHigh, Low, NoneMax, High, Low, None
Default reasoning effortHighMax
Release dateAugust 28, 2026July 16, 2026

Features

Supported features

API features available for each model.

Metrictencent logoHy4 previewmoonshotai logoKimi K3
Tool callingSupportedSupported
Structured outputsSupportedSupported
JSON modeSupportedSupported
ReasoningSupportedSupported
TemperatureSupportedSupported
Stop sequencesSupportedSupported
Deterministic seedSupportedSupported
Verbosity controlNot supportedNot supported

Our take

Hy4 preview is 2.0x 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 Kimi K3 cheaper?

Hy4 preview is cheaper for a typical chat (2K input tokens and 500 output tokens). Hy4 preview costs $0.83 per 1M input tokens and $2.50 per 1M output tokens, while Kimi K3 costs $0.24 per 1M input tokens and $10.80 per 1M output tokens.

Which has a bigger context window, Hy4 preview or Kimi K3?

Hy4 preview supports up to 1.05M tokens of context, compared with 1.05M for Kimi K3.

Can I use Hy4 preview and Kimi K3 at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Hy4 preview and Kimi K3 answer side by side and keep the better response.

tencent logomoonshotai logo

Why choose? Ask both.

Send one prompt to Hy4 preview and Kimi K3 at the same time. Compare the answers side by side and keep the best one.

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