AI model comparison

Hy4 preview vs MiMo-V2.5-Pro

Side by side comparison of Hy4 preview and MiMo-V2.5-Pro 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

MiMo-V2.5-Pro is Xiaomi’s flagship model, delivering strong performance in general agentic capabilities, complex software engineering, and long-horizon tasks, with top rankings on benchmarks such as ClawEval, GDPVal, and SWE-bench Pro.

Input / 1M
$0.48
Output / 1M
$1.80
Context
1.05M

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At a glance

Quick verdict

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

Lower price

xiaomi logo

MiMo-V2.5-Pro

1.6x cheaper for a typical chat

Higher intelligence score

Not available

Not enough benchmark data

Larger context window

xiaomi logo

MiMo-V2.5-Pro

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
xiaomi logoMiMo-V2.5-ProNot available

Coding index

tencent logoHy4 previewNot available
xiaomi logoMiMo-V2.5-Pro60.2

Agentic index

tencent logoHy4 previewNot available
xiaomi logoMiMo-V2.5-Pro21.3

Pricing

Hy4 preview vs MiMo-V2.5-Pro API pricing

Per-token API rates. Cheaper option highlighted.

Metrictencent logoHy4 previewxiaomi logoMiMo-V2.5-Pro
Input tokensPer 1M tokens$0.83$0.48
Output tokensPer 1M tokens$2.50$1.80
Cached input (read)Per 1M tokens$0.04$0.10
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
xiaomi logoMiMo-V2.5-Pro$1.86

Coding task

30K in, 4K out

tencent logoHy4 preview$35.02$11.26 cached
xiaomi logoMiMo-V2.5-Pro$21.60$10.08 cached

Long document summary

150K in, 2K out

tencent logoHy4 preview$130.10$11.30 cached
xiaomi logoMiMo-V2.5-Pro$75.60$18 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 previewxiaomi logoMiMo-V2.5-Pro
Context window1.05M tokens1.05M tokens
Max output64K tokens236K tokens
Input typesTextText
Output typesTextText
Reasoning effort levelsHigh, Low, NoneNot available
Default reasoning effortHighNot available
Release dateAugust 28, 2026April 22, 2026

Features

Supported features

API features available for each model.

Metrictencent logoHy4 previewxiaomi logoMiMo-V2.5-Pro
Tool callingSupportedSupported
Structured outputsSupportedSupported
JSON modeSupportedSupported
ReasoningSupportedSupported
TemperatureSupportedSupported
Stop sequencesSupportedNot supported
Deterministic seedSupportedSupported
Verbosity controlNot supportedNot supported

Our take

MiMo-V2.5-Pro is 1.6x cheaper for a typical chat. MiMo-V2.5-Pro has the larger context window (1.05M vs 1.05M 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 MiMo-V2.5-Pro cheaper?

MiMo-V2.5-Pro is cheaper for a typical chat (2K input tokens and 500 output tokens). MiMo-V2.5-Pro costs $0.48 per 1M input tokens and $1.80 per 1M output tokens, while Hy4 preview costs $0.83 per 1M input tokens and $2.50 per 1M output tokens.

Which has a bigger context window, Hy4 preview or MiMo-V2.5-Pro?

MiMo-V2.5-Pro supports up to 1.05M tokens of context, compared with 1.05M for Hy4 preview.

Can I use Hy4 preview and MiMo-V2.5-Pro at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Hy4 preview and MiMo-V2.5-Pro answer side by side and keep the better response.

tencent logoxiaomi logo

Why choose? Ask both.

Send one prompt to Hy4 preview and MiMo-V2.5-Pro at the same time. Compare the answers side by side and keep the best one.