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Atria Dawn Preview vs LongCat-Flash-Lite

Atria Dawn Preview leads the LLM Stats Score 52.3 to 18.7.

Shanghai AI Laboratory · Meituan · Updated for 2026

Which is better?

Atria Dawn Preview leads the overall LLM Stats Score 52.3 to 18.7, ranking #10 overall.

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

Choose Atria Dawn Preview

  • overall performance matters — it scores 52.3 and ranks #10 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you want the most recent training data — it shipped Sep 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.

Atria Dawn Preview
Shanghai AI Laboratory
LongCat-Flash-Lite
Meituan
Core performance indexes
LLM Stats Score
52.3
#10
18.7
#210
Reasoning
50.5
#12
18.9
#203
Coding
36.2
#22
7.1
#187
Agents
38.8
#10
4.0
#158
Cost, coverage & limits
Benchmark wins
—
—
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

1 shared
Index
Atria Dawn Preview
LongCat-Flash-Lite
Tool use
31.1#12
9.7#131
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

12 reported for Atria Dawn Preview · 13 for LongCat-Flash-Lite

No common benchmarks found

Atria Dawn Preview and LongCat-Flash-Litedon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

675.5B diff

Atria Dawn Preview has 675.5B more parameters than LongCat-Flash-Lite, making it 986.1% larger.

Shanghai AI Laboratory
Atria Dawn Preview
744.0Bparameters
Meituan
LongCat-Flash-Lite
68.5Bparameters
744.0B
Atria Dawn 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).

Shanghai AI Laboratory
Atria Dawn Preview
Input- tokens
Output- tokens
Meituan
LongCat-Flash-Lite
Input256,000 tokens
Output128,000 tokens
Mon Sep 21 2026 • llm-stats.com

License

Usage and distribution terms

Both models are licensed under MIT.

Both models share the same licensing terms, providing consistent usage rights.

Atria Dawn Preview

MIT

Open weights

LongCat-Flash-Lite

MIT

Open weights

Release Timeline

When each model was launched

Atria Dawn Preview was released on 2026-09-11, while LongCat-Flash-Lite was released on 2026-02-05.

Atria Dawn Preview is 7 months newer than LongCat-Flash-Lite.

Atria Dawn Preview

Sep 11, 2026

1 weeks ago

7mo newer
LongCat-Flash-Lite

Feb 5, 2026

7 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 Atria Dawn Preview and LongCat-Flash-Lite side-by-side, then vote on the output you prefer.

Atria Dawn Preview
✓ Preferred
LongCat-Flash-Lite
Open in Playground

FAQ

Common questions about Atria Dawn Preview vs LongCat-Flash-Lite.

Which is better, Atria Dawn Preview or LongCat-Flash-Lite?

Atria Dawn Preview leads the LLM Stats Score 52.3 to 18.7. Atria Dawn Preview is made by Shanghai AI Laboratory 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 Atria Dawn Preview compare to LongCat-Flash-Lite in benchmarks?

Atria Dawn Preview scores DeepSearchQA: 96.0%, BrowseComp: 92.5%, CyberGym: 86.5%, MLE-Bench Lite: 86.2%, WideSearch: 81.9%. 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 Atria Dawn Preview and LongCat-Flash-Lite?

Atria Dawn 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 Atria Dawn Preview and LongCat-Flash-Lite?

Key differences include LLM Stats Score (52.3 vs 18.7). See the full comparison above for benchmark-by-benchmark results.

Who makes Atria Dawn Preview and LongCat-Flash-Lite?

Atria Dawn Preview is developed by Shanghai AI Laboratory and LongCat-Flash-Lite is developed by Meituan.

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