AI model comparison

Hy4 preview vs Qwen3.8 27B

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

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

Qwen3.8 27B is an open-weight dense vision-language model from Qwen.

Input / 1M
$0.43
Output / 1M
$2.55
Context
1M

At a glance

Quick verdict

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

Lower price

qwen logo

Qwen3.8 27B

1.2x cheaper for a typical chat

Higher intelligence score

Tie

Not enough benchmark data

Larger context window

tencent logo

Hy4 preview

1.05M vs 1M 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
qwen logoQwen3.8 27B33.7

Coding index

tencent logoHy4 previewNot available
qwen logoQwen3.8 27B68.1

Agentic index

tencent logoHy4 previewNot available
qwen logoQwen3.8 27B45.8

Pricing

Hy4 preview vs Qwen3.8 27B API pricing

Per-token API rates. Cheaper option highlighted.

Metrictencent logoHy4 previewqwen logoQwen3.8 27B
Input tokensPer 1M tokens$0.75$0.43
Output tokensPer 1M tokens$2.25$2.55
Cached input (read)Per 1M tokens$0.04$0.09
Cache writePer 1M tokensNot available$0.53

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
qwen logoQwen3.8 27B$2.13

Coding task

30K in, 4K out

tencent logoHy4 preview$31.52$10.14 cached
qwen logoQwen3.8 27B$22.95$12.75 cached

Long document summary

150K in, 2K out

tencent logoHy4 preview$117.09$10.17 cached
qwen logoQwen3.8 27B$68.85$17.85 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 previewqwen logoQwen3.8 27B
Context window1.05M tokens1M tokens
Max output64K tokens131K tokens
Input typesTextImage, Text, Video
Output typesTextText
Reasoning effort levelsHigh, Low, NoneExtra high, Medium, Low
Default reasoning effortHighExtra high
Release dateAugust 28, 2026August 14, 2026

Features

Supported features

API features available for each model.

Metrictencent logoHy4 previewqwen logoQwen3.8 27B
Tool callingSupportedSupported
Structured outputsSupportedSupported
JSON modeSupportedSupported
ReasoningSupportedSupported
TemperatureSupportedSupported
Stop sequencesSupportedSupported
Deterministic seedSupportedSupported
Verbosity controlNot supportedNot supported

Our take

Qwen3.8 27B is 1.2x cheaper for a typical chat. Hy4 preview has the larger context window (1.05M vs 1M tokens). 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 Qwen3.8 27B cheaper?

Qwen3.8 27B is cheaper for a typical chat (2K input tokens and 500 output tokens). Qwen3.8 27B costs $0.43 per 1M input tokens and $2.55 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 Qwen3.8 27B?

Hy4 preview supports up to 1.05M tokens of context, compared with 1M for Qwen3.8 27B.

Can I use Hy4 preview and Qwen3.8 27B at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Hy4 preview and Qwen3.8 27B answer side by side and keep the better response.

tencent logoqwen logo

Why choose? Ask both.

Send one prompt to Hy4 preview and Qwen3.8 27B at the same time. Compare the answers side by side and keep the best one.