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DeepSeek-V4.1-Flash vs LongCat-Flash-Lite

DeepSeek-V4.1-Flash leads the LLM Stats Score 51.8 to 18.7. LongCat-Flash-Lite is 1.9x cheaper per token.

DeepSeek · Meituan · Updated for 2026

Which is better?

DeepSeek-V4.1-Flash leads the overall LLM Stats Score 51.8 to 18.7, ranking #12 overall.

In the 1 individual benchmarks reported for both models, DeepSeek-V4.1-Flash wins 1; this is a narrower head-to-head signal than the composite indexes.

On price, LongCat-Flash-Lite is roughly 1.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

DeepSeek-V4.1-Flash also accepts a larger context window (1,040,000 input tokens), making it the stronger choice for long documents and large codebases.

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

Choose DeepSeek-V4.1-Flash

  • overall performance matters — it scores 51.8 and ranks #12 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 process long inputs — it offers a 1,040,000 token context window
  • you want the most recent training data — it shipped Sep 2026

Choose LongCat-Flash-Lite

  • cost matters — it's about 1.9x cheaper per token

At a glance

The differences that matter most.

DeepSeek-V4.1-Flash
DeepSeek
LongCat-Flash-Lite
Meituan
Core performance indexes
LLM Stats Score
51.8
#12
18.7
#209
Reasoning
48.9
#17
18.9
#202
Coding
44.4
#5
7.2
#186
Agents
41.3
#4
4.1
#156
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
$0.22 / M
$0.10 / M
Output price
$0.66 / M
$0.40 / M
Context window
1,040,000
256,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
DeepSeek-V4.1-Flash
LongCat-Flash-Lite
Math
35.2#43
17.2#196
Tool use
35.1#2
9.7#130
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

20 reported for DeepSeek-V4.1-Flash · 13 for LongCat-Flash-Lite

1 shared

DeepSeek-V4.1-Flash outperforms in 1 benchmarks (GPQA), while LongCat-Flash-Lite is better at 0 benchmarks.

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

Fri Sep 11 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

LongCat-Flash-Lite costs less

For input processing, DeepSeek-V4.1-Flash ($0.22/1M tokens) is 2.2x more expensive than LongCat-Flash-Lite ($0.10/1M tokens).

For output processing, DeepSeek-V4.1-Flash ($0.66/1M tokens) is 1.6x more expensive than LongCat-Flash-Lite ($0.40/1M tokens).

In conclusion, DeepSeek-V4.1-Flash is more expensive than LongCat-Flash-Lite.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Fri Sep 11 2026 • llm-stats.com
DeepSeek
DeepSeek-V4.1-Flash
Input tokens$0.22
Output tokens$0.66
Best providerFireworks
Meituan
LongCat-Flash-Lite
Input tokens$0.10
Output tokens$0.40
Best providerMeituan
Notice missing or incorrect data?Start an Issue→

Model Size

Parameter count comparison

694.7B diff

DeepSeek-V4.1-Flash has 694.7B more parameters than LongCat-Flash-Lite, making it 1014.2% larger.

DeepSeek
DeepSeek-V4.1-Flash
763.2Bparameters
Meituan
LongCat-Flash-Lite
68.5Bparameters
763.2B
DeepSeek-V4.1-Flash
68.5B
LongCat-Flash-Lite

Context Window

Maximum input and output token capacity

DeepSeek-V4.1-Flash accepts 1,040,000 input tokens compared to LongCat-Flash-Lite's 256,000 tokens. DeepSeek-V4.1-Flash can generate longer responses up to 393,216 tokens, while LongCat-Flash-Lite is limited to 128,000 tokens.

DeepSeek
DeepSeek-V4.1-Flash
Input1,040,000 tokens
Output393,216 tokens
Meituan
LongCat-Flash-Lite
Input256,000 tokens
Output128,000 tokens
Fri Sep 11 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

DeepSeek-V4.1-Flash supports multimodal inputs, whereas LongCat-Flash-Lite does not.

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

DeepSeek-V4.1-Flash

Text
Images
Audio
Video

LongCat-Flash-Lite

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.

DeepSeek-V4.1-Flash

MIT

Open weights

LongCat-Flash-Lite

MIT

Open weights

Release Timeline

When each model was launched

DeepSeek-V4.1-Flash was released on 2026-09-10, while LongCat-Flash-Lite was released on 2026-02-05.

DeepSeek-V4.1-Flash is 7 months newer than LongCat-Flash-Lite.

DeepSeek-V4.1-Flash

Sep 10, 2026

1 days 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

Provider Availability

DeepSeek-V4.1-Flash is available from Fireworks, DeepInfra, DeepSeek, Novita. LongCat-Flash-Lite is available from Meituan.

DeepSeek-V4.1-Flash

fireworks logo
Fireworks
Input Price:Input: $0.22/1MOutput Price:Output: $0.66/1M
deepinfra logo
Deepinfra
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M
deepseek logo
DeepSeek
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M
novita logo
Novita
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M

LongCat-Flash-Lite

meituan logo
Meituan
Input Price:Input: $0.10/1MOutput Price:Output: $0.40/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against DeepSeek-V4.1-Flash and LongCat-Flash-Lite side-by-side, then vote on the output you prefer.

DeepSeek-V4.1-Flash
✓ Preferred
LongCat-Flash-Lite
Open in Playground

FAQ

Common questions about DeepSeek-V4.1-Flash vs LongCat-Flash-Lite.

Which is better, DeepSeek-V4.1-Flash or LongCat-Flash-Lite?

DeepSeek-V4.1-Flash leads the LLM Stats Score 51.8 to 18.7. DeepSeek-V4.1-Flash is made by DeepSeek 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 DeepSeek-V4.1-Flash compare to LongCat-Flash-Lite in benchmarks?

DeepSeek-V4.1-Flash scores CodeForces: 100.0%, GPQA: 90.9%, Terminal-Bench 2.1: 90.6%, BabyVision: 89.6%, CyberGym: 88.1%. LongCat-Flash-Lite scores MATH-500: 96.8%, MMLU: 85.5%, CMMLU: 82.5%, MMLU-Pro: 78.3%, Tau2 Retail: 73.1%.

Is DeepSeek-V4.1-Flash cheaper than LongCat-Flash-Lite?

LongCat-Flash-Lite is 2.2x cheaper for input tokens. DeepSeek-V4.1-Flash costs $0.22/M input and $0.66/M output via fireworks. LongCat-Flash-Lite costs $0.10/M input and $0.40/M output via meituan.

What are the context window sizes for DeepSeek-V4.1-Flash and LongCat-Flash-Lite?

DeepSeek-V4.1-Flash supports 1.0M 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 DeepSeek-V4.1-Flash and LongCat-Flash-Lite?

Key differences include LLM Stats Score (51.8 vs 18.7), context window (1.0M vs 256K), input pricing ($0.22 vs $0.10/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes DeepSeek-V4.1-Flash and LongCat-Flash-Lite?

DeepSeek-V4.1-Flash is developed by DeepSeek and LongCat-Flash-Lite is developed by Meituan.

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