Model Comparison

DeepSeek-V4-Flash-0731 vs LongCat-Flash-LiteWhich is better in 2026?

Comparing DeepSeek-V4-Flash-0731 and LongCat-Flash-Lite across benchmarks, pricing, and capabilities.

Verdict: DeepSeek-V4-Flash-0731 vs LongCat-Flash-Lite — which is better?

DeepSeek-V4-Flash-0731 (by DeepSeek) and LongCat-Flash-Lite (by Meituan) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

On price, DeepSeek-V4-Flash-0731 is roughly 1.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

DeepSeek-V4-Flash-0731 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose DeepSeek-V4-Flash-0731 if…

  • cost matters — it's about 1.6x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Jul 2026

Choose LongCat-Flash-Lite if…

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

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

DeepSeek-V4-Flash-0731 and LongCat-Flash-Litedon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

DeepSeek-V4-Flash-0731 costs less

For input processing, DeepSeek-V4-Flash-0731 ($0.09/1M tokens) is 1.1x cheaper than LongCat-Flash-Lite ($0.10/1M tokens).

For output processing, DeepSeek-V4-Flash-0731 ($0.18/1M tokens) is 2.2x cheaper than LongCat-Flash-Lite ($0.40/1M tokens).

In conclusion, LongCat-Flash-Lite is more expensive than DeepSeek-V4-Flash-0731.*

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

Lowest available price from all providers
Tue Aug 04 2026 • llm-stats.com
DeepSeek
DeepSeek-V4-Flash-0731
Input tokens$0.09
Output tokens$0.18
Best providerDeepinfra
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

235.5B diff

DeepSeek-V4-Flash-0731 has 235.5B more parameters than LongCat-Flash-Lite, making it 343.8% larger.

DeepSeek
DeepSeek-V4-Flash-0731
304.0Bparameters
Meituan
LongCat-Flash-Lite
68.5Bparameters
304.0B
DeepSeek-V4-Flash-0731
68.5B
LongCat-Flash-Lite

Context Window

Maximum input and output token capacity

DeepSeek-V4-Flash-0731 accepts 1,048,576 input tokens compared to LongCat-Flash-Lite's 256,000 tokens. LongCat-Flash-Lite can generate longer responses up to 128,000 tokens, while DeepSeek-V4-Flash-0731 is limited to 65,536 tokens.

DeepSeek
DeepSeek-V4-Flash-0731
Input1,048,576 tokens
Output65,536 tokens
Meituan
LongCat-Flash-Lite
Input256,000 tokens
Output128,000 tokens
Tue Aug 04 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.

DeepSeek-V4-Flash-0731

MIT

Open weights

LongCat-Flash-Lite

MIT

Open weights

Release Timeline

When each model was launched

DeepSeek-V4-Flash-0731 was released on 2026-07-31, while LongCat-Flash-Lite was released on 2026-02-05.

DeepSeek-V4-Flash-0731 is 6 months newer than LongCat-Flash-Lite.

DeepSeek-V4-Flash-0731

Jul 31, 2026

4 days ago

5mo 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

Provider Availability

DeepSeek-V4-Flash-0731 is available from DeepInfra, Fireworks, Novita. LongCat-Flash-Lite is available from Meituan.

DeepSeek-V4-Flash-0731

deepinfra logo
Deepinfra
Input Price:Input: $0.09/1MOutput Price:Output: $0.18/1M
fireworks logo
Fireworks
Input Price:Input: $0.14/1MOutput Price:Output: $0.28/1M
novita logo
Novita
Input Price:Input: $0.14/1MOutput Price:Output: $0.28/1M

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→

Key Takeaways

DeepSeek
Larger context window (1,048,576 tokens)
Less expensive input tokens
Less expensive output tokens
Meituan

No standout differentiators in the data we have for this pair.

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against DeepSeek-V4-Flash-0731 and LongCat-Flash-Lite side-by-side, then vote on the output you prefer.

DeepSeek-V4-Flash-0731
✓ Preferred
LongCat-Flash-Lite
Open in Playground
AI Model Comparison Table
Feature
DeepSeek
DeepSeek-V4-Flash-0731
Meituan
LongCat-Flash-Lite

FAQ

Common questions about DeepSeek-V4-Flash-0731 vs LongCat-Flash-Lite.

Which is better, DeepSeek-V4-Flash-0731 or LongCat-Flash-Lite?

DeepSeek-V4-Flash-0731 (DeepSeek) and LongCat-Flash-Lite (Meituan) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does DeepSeek-V4-Flash-0731 compare to LongCat-Flash-Lite in benchmarks?

DeepSeek-V4-Flash-0731 scores Terminal-Bench 2.1: 82.7%, CyberGym: 76.7%, Toolathlon: 70.3%, DSBench-FullStack: 68.7%, DSBench-Hard: 59.6%. 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-Flash-0731 cheaper than LongCat-Flash-Lite?

DeepSeek-V4-Flash-0731 is 1.1x cheaper for input tokens. DeepSeek-V4-Flash-0731 costs $0.09/M input and $0.18/M output via deepinfra. LongCat-Flash-Lite costs $0.10/M input and $0.40/M output via meituan.

What are the context window sizes for DeepSeek-V4-Flash-0731 and LongCat-Flash-Lite?

DeepSeek-V4-Flash-0731 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-Flash-0731 and LongCat-Flash-Lite?

Key differences include context window (1.0M vs 256K), input pricing ($0.09 vs $0.10/M). See the full comparison above for benchmark-by-benchmark results.

Who makes DeepSeek-V4-Flash-0731 and LongCat-Flash-Lite?

DeepSeek-V4-Flash-0731 is developed by DeepSeek and LongCat-Flash-Lite is developed by Meituan.

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