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Hy4 preview vs MiMo-V2.5

Hy4 preview leads the LLM Stats Score 51.1 to 35.4.

Tencent · Xiaomi · Updated for 2026

Which is better?

Hy4 preview leads the overall LLM Stats Score 51.1 to 35.4, ranking #14 overall.

In the 1 individual benchmarks reported for both models, Hy4 preview wins 1; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Hy4 preview

  • overall performance matters — it scores 51.1 and ranks #14 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Aug 2026

Choose MiMo-V2.5

  • you want predictable pricing at $0.17/M input and $0.34/M output

At a glance

The differences that matter most.

Hy4 preview
Tencent
MiMo-V2.5
Xiaomi
Core performance indexes
LLM Stats Score
51.1
#14
35.4
#82
Reasoning
50.7
#11
35.5
#75
Coding
39.8
#12
27.0
#57
Agents
36.3
#14
18.7
#60
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
— / M
$0.17 / M
Output price
— / M
$0.34 / M
Context window
—
1,048,576

Individual benchmarks

32 reported for Hy4 preview · 14 for MiMo-V2.5

1 shared

Hy4 preview outperforms in 1 benchmarks (SWE-Bench Pro), while MiMo-V2.5 is better at 0 benchmarks.

Hy4 preview significantly outperforms across most benchmarks.

Sat Sep 05 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

459.2B diff

Hy4 preview has 459.2B more parameters than MiMo-V2.5, making it 147.8% larger.

Tencent
Hy4 preview
770.0Bparameters
Xiaomi
MiMo-V2.5
310.8Bparameters
770.0B
Hy4 preview
310.8B
MiMo-V2.5

Context Window

Maximum input and output token capacity

Only MiMo-V2.5 specifies input context (1,048,576 tokens). Only MiMo-V2.5 specifies output context (131,072 tokens).

Tencent
Hy4 preview
Input- tokens
Output- tokens
Xiaomi
MiMo-V2.5
Input1,048,576 tokens
Output131,072 tokens
Sat Sep 05 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

MiMo-V2.5 supports multimodal inputs, whereas Hy4 preview does not.

MiMo-V2.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Hy4 preview

Text
Images
Audio
Video

MiMo-V2.5

Text
Images
Audio
Video

License

Usage and distribution terms

Hy4 preview is licensed under Apache 2.0, while MiMo-V2.5 uses MIT.

License differences may affect how you can use these models in commercial or open-source projects.

Hy4 preview

Apache 2.0

Open weights

MiMo-V2.5

MIT

Open weights

Release Timeline

When each model was launched

Hy4 preview was released on 2026-08-28, while MiMo-V2.5 was released on 2026-04-22.

Hy4 preview is 4 months newer than MiMo-V2.5.

Hy4 preview

Aug 28, 2026

1 weeks ago

4mo newer
MiMo-V2.5

Apr 22, 2026

4 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Hy4 preview and MiMo-V2.5 side-by-side, then vote on the output you prefer.

Hy4 preview
✓ Preferred
MiMo-V2.5
Open in Playground

FAQ

Common questions about Hy4 preview vs MiMo-V2.5.

Which is better, Hy4 preview or MiMo-V2.5?

Hy4 preview leads the LLM Stats Score 51.1 to 35.4. Hy4 preview is made by Tencent and MiMo-V2.5 is made by Xiaomi. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Hy4 preview compare to MiMo-V2.5 in benchmarks?

Hy4 preview scores GPQA: 92.3%, Terminal-Bench 2.1: 85.4%, WideSearch: 83.9%, MCP Atlas: 83.7%, SWE-bench Multilingual: 82.9%. MiMo-V2.5 scores HR-Bench (4k): 88.5%, Video-MME: 87.7%, OmniDocBench: 87.2%, GraphWalks: 87.0%, DailyOmni: 83.5%.

What are the context window sizes for Hy4 preview and MiMo-V2.5?

Hy4 preview supports an unknown number of tokens and MiMo-V2.5 supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Hy4 preview and MiMo-V2.5?

Key differences include LLM Stats Score (51.1 vs 35.4), multimodal support (no vs yes), licensing (Apache 2.0 vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Hy4 preview and MiMo-V2.5?

Hy4 preview is developed by Tencent and MiMo-V2.5 is developed by Xiaomi.

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