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Hy4 preview vs LongCat-Flash-Lite

Hy4 preview leads the LLM Stats Score 51.5 to 19.0.

Tencent · Meituan · Updated for 2026

Which is better?

Hy4 preview leads the overall LLM Stats Score 51.5 to 19.0, 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 LongCat-Flash-Lite

  • you want predictable pricing at $0.10/M input and $0.40/M output

At a glance

The differences that matter most.

Hy4 preview
Tencent
LongCat-Flash-Lite
Meituan
Core performance indexes
LLM Stats Score
51.5
#10
19.0
#194
Reasoning
51.2
#8
19.2
#187
Coding
40.9
#10
7.4
#173
Agents
37.1
#11
4.3
#143
Cost, coverage & limits
Benchmark wins
2 of 2
0 of 2
Input price
— / M
$0.10 / M
Output price
— / M
$0.40 / M
Context window
—
256,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
Hy4 preview
LongCat-Flash-Lite
Math
40.3#12
17.5#186
Tool use
32.6#7
10.7#115
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

32 reported for Hy4 preview · 13 for LongCat-Flash-Lite

2 shared

Hy4 preview outperforms in 2 benchmarks (GPQA, SWE-bench Multilingual), while LongCat-Flash-Lite 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

701.5B diff

Hy4 preview has 701.5B more parameters than LongCat-Flash-Lite, making it 1024.1% larger.

Tencent
Hy4 preview
770.0Bparameters
Meituan
LongCat-Flash-Lite
68.5Bparameters
770.0B
Hy4 preview
68.5B
LongCat-Flash-Lite

Context Window

Maximum input and output token capacity

Only LongCat-Flash-Lite specifies input context (256,000 tokens). Only LongCat-Flash-Lite specifies output context (128,000 tokens).

Tencent
Hy4 preview
Input- tokens
Output- tokens
Meituan
LongCat-Flash-Lite
Input256,000 tokens
Output128,000 tokens
Mon Aug 31 2026 • llm-stats.com

License

Usage and distribution terms

Hy4 preview is licensed under Apache 2.0, while LongCat-Flash-Lite 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

LongCat-Flash-Lite

MIT

Open weights

Release Timeline

When each model was launched

Hy4 preview was released on 2026-08-28, while LongCat-Flash-Lite was released on 2026-02-05.

Hy4 preview is 7 months newer than LongCat-Flash-Lite.

Hy4 preview

Aug 28, 2026

2 days ago

6mo newer
LongCat-Flash-Lite

Feb 5, 2026

6 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 LongCat-Flash-Lite side-by-side, then vote on the output you prefer.

Hy4 preview
✓ Preferred
LongCat-Flash-Lite
Open in Playground

FAQ

Common questions about Hy4 preview vs LongCat-Flash-Lite.

Which is better, Hy4 preview or LongCat-Flash-Lite?

Hy4 preview leads the LLM Stats Score 51.5 to 19.0. Hy4 preview is made by Tencent and LongCat-Flash-Lite is made by Meituan. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Hy4 preview compare to LongCat-Flash-Lite 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%. LongCat-Flash-Lite scores MATH-500: 96.8%, MMLU: 85.5%, CMMLU: 82.5%, MMLU-Pro: 78.3%, Tau2 Retail: 73.1%.

What are the context window sizes for Hy4 preview and LongCat-Flash-Lite?

Hy4 preview supports an unknown number of tokens and LongCat-Flash-Lite supports 256K 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 LongCat-Flash-Lite?

Key differences include LLM Stats Score (51.5 vs 19.0), licensing (Apache 2.0 vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Hy4 preview and LongCat-Flash-Lite?

Hy4 preview is developed by Tencent and LongCat-Flash-Lite is developed by Meituan.

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