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Atria Dawn Preview vs DeepSeek-V4.1-Flash

Atria Dawn Preview and DeepSeek-V4.1-Flash are closely matched at 52.3 and 51.8 on the LLM Stats Score.

Shanghai AI Laboratory · DeepSeek · Updated for 2026

Which is better?

Atria Dawn Preview and DeepSeek-V4.1-Flash are closely matched on the overall LLM Stats Score at 52.3 and 51.8.

In the 3 individual benchmarks reported for both models, DeepSeek-V4.1-Flash wins 3; 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 Atria Dawn Preview

  • you want the most recent training data — it shipped Sep 2026

Choose DeepSeek-V4.1-Flash

  • you value its reported benchmark strengths — it wins 3 of 3 exact shared results

At a glance

The differences that matter most.

Atria Dawn Preview
Shanghai AI Laboratory
DeepSeek-V4.1-Flash
DeepSeek
Core performance indexes
LLM Stats Score
52.3
#10
51.8
#13
Reasoning
50.5
#12
48.9
#18
Coding
36.2
#22
44.2
#5
Agents
38.8
#10
41.1
#4
Cost, coverage & limits
Benchmark wins
0 of 3
3 of 3
Input price
— / M
$0.22 / M
Output price
— / M
$0.66 / M
Context window
—
1,040,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Atria Dawn Preview
DeepSeek-V4.1-Flash
Tool use
31.1#12
34.8#2
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

12 reported for Atria Dawn Preview · 20 for DeepSeek-V4.1-Flash

3 shared

Atria Dawn Preview outperforms in 0 benchmarks, while DeepSeek-V4.1-Flash is better at 3 benchmarks (AutomationBench, CyberGym, Terminal-Bench 2.1).

DeepSeek-V4.1-Flash significantly outperforms across most benchmarks.

Tue Sep 15 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

19.2B diff

DeepSeek-V4.1-Flash has 19.2B more parameters than Atria Dawn Preview, making it 2.6% larger.

Shanghai AI Laboratory
Atria Dawn Preview
744.0Bparameters
DeepSeek
DeepSeek-V4.1-Flash
763.2Bparameters
744.0B
Atria Dawn Preview
763.2B
DeepSeek-V4.1-Flash

Context Window

Maximum input and output token capacity

Only DeepSeek-V4.1-Flash specifies input context (1,040,000 tokens). Only DeepSeek-V4.1-Flash specifies output context (393,216 tokens).

Shanghai AI Laboratory
Atria Dawn Preview
Input- tokens
Output- tokens
DeepSeek
DeepSeek-V4.1-Flash
Input1,040,000 tokens
Output393,216 tokens
Tue Sep 15 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

DeepSeek-V4.1-Flash supports multimodal inputs, whereas Atria Dawn Preview does not.

DeepSeek-V4.1-Flash can handle both text and other forms of data like images, making it suitable for multimodal applications.

Atria Dawn Preview

Text
Images
Audio
Video

DeepSeek-V4.1-Flash

Text
Images
Audio
Video

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

DeepSeek-V4.1-Flash

MIT

Open weights

Release Timeline

When each model was launched

Atria Dawn Preview was released on 2026-09-11, while DeepSeek-V4.1-Flash was released on 2026-09-10.

Atria Dawn Preview is 0 month newer than DeepSeek-V4.1-Flash.

Atria Dawn Preview

Sep 11, 2026

4 days ago

1d newer
DeepSeek-V4.1-Flash

Sep 10, 2026

5 days 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 DeepSeek-V4.1-Flash side-by-side, then vote on the output you prefer.

Atria Dawn Preview
✓ Preferred
DeepSeek-V4.1-Flash
Open in Playground

FAQ

Common questions about Atria Dawn Preview vs DeepSeek-V4.1-Flash.

Which is better, Atria Dawn Preview or DeepSeek-V4.1-Flash?

Atria Dawn Preview and DeepSeek-V4.1-Flash are closely matched on the LLM Stats Score at 52.3 and 51.8. Atria Dawn Preview is made by Shanghai AI Laboratory and DeepSeek-V4.1-Flash is made by DeepSeek. 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 DeepSeek-V4.1-Flash in benchmarks?

Atria Dawn Preview scores DeepSearchQA: 96.0%, BrowseComp: 92.5%, CyberGym: 86.5%, MLE-Bench Lite: 86.2%, WideSearch: 81.9%. DeepSeek-V4.1-Flash scores CodeForces: 100.0%, GPQA: 90.9%, Terminal-Bench 2.1: 90.6%, BabyVision: 89.6%, CyberGym: 88.1%.

What are the context window sizes for Atria Dawn Preview and DeepSeek-V4.1-Flash?

Atria Dawn Preview supports an unknown number of tokens and DeepSeek-V4.1-Flash 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 Atria Dawn Preview and DeepSeek-V4.1-Flash?

Key differences include LLM Stats Score (52.3 vs 51.8), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes Atria Dawn Preview and DeepSeek-V4.1-Flash?

Atria Dawn Preview is developed by Shanghai AI Laboratory and DeepSeek-V4.1-Flash is developed by DeepSeek.

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