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Hy4 preview vs MiMo-V2.5-Pro

Hy4 preview leads the LLM Stats Score 51.5 to 25.1.

Tencent · Xiaomi · Updated for 2026

Which is better?

Hy4 preview leads the overall LLM Stats Score 51.5 to 25.1, ranking #10 overall.

In the 2 individual benchmarks reported for both models, Hy4 preview wins 2; 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 51.5 and ranks #10 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 2 of 2 exact shared results
  • you want the most recent training data — it shipped Aug 2026

Choose MiMo-V2.5-Pro

  • you want predictable pricing at $0.43/M input and $0.87/M output

At a glance

The differences that matter most.

Hy4 preview
Tencent
MiMo-V2.5-Pro
Xiaomi
Core performance indexes
LLM Stats Score
51.5
#10
25.1
#145
Reasoning
51.2
#8
24.5
#144
Coding
40.9
#10
31.1
#42
Agents
37.1
#11
22.2
#49
Cost, coverage & limits
Benchmark wins
2 of 2
0 of 2
Input price
— / M
$0.43 / M
Output price
— / M
$0.87 / M
Context window
—
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
Hy4 preview
MiMo-V2.5-Pro
Math
40.3#12
25.6#100
Tool use
32.6#7
23.2#38
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

32 reported for Hy4 preview · 31 for MiMo-V2.5-Pro

2 shared

Hy4 preview outperforms in 2 benchmarks (GPQA, SWE-Bench Pro), while MiMo-V2.5-Pro is better at 0 benchmarks.

Hy4 preview significantly outperforms across most benchmarks.

Mon Aug 31 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

253.2B diff

MiMo-V2.5-Pro has 253.2B more parameters than Hy4 preview, making it 32.9% larger.

Tencent
Hy4 preview
770.0Bparameters
Xiaomi
MiMo-V2.5-Pro
1.0Tparameters
770.0B
Hy4 preview
1023.2B
MiMo-V2.5-Pro

Context Window

Maximum input and output token capacity

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

Tencent
Hy4 preview
Input- tokens
Output- tokens
Xiaomi
MiMo-V2.5-Pro
Input1,048,576 tokens
Output131,072 tokens
Mon Aug 31 2026 • llm-stats.com

License

Usage and distribution terms

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

MIT

Open weights

Release Timeline

When each model was launched

Hy4 preview was released on 2026-08-28, while MiMo-V2.5-Pro was released on 2026-04-27.

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

Hy4 preview

Aug 28, 2026

2 days ago

4mo newer
MiMo-V2.5-Pro

Apr 27, 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-Pro side-by-side, then vote on the output you prefer.

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

FAQ

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

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

Hy4 preview leads the LLM Stats Score 51.5 to 25.1. Hy4 preview is made by Tencent and MiMo-V2.5-Pro 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-Pro 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-Pro scores FrontierSWE (Impl.): 100.0%, GSM8k: 99.6%, ARC-C: 97.2%, MMLU-Redux: 92.8%, C-Eval: 91.5%.

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

Hy4 preview supports an unknown number of tokens and MiMo-V2.5-Pro 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-Pro?

Key differences include LLM Stats Score (51.5 vs 25.1), licensing (Apache 2.0 vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Hy4 preview and MiMo-V2.5-Pro?

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

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