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DeepSeek-V4-Pro-0813 vs LongCat-Flash-Chat

Comparing DeepSeek-V4-Pro-0813 and LongCat-Flash-Chat across benchmarks, pricing, and capabilities.

DeepSeek · Meituan · Updated for 2026

Which is better?

DeepSeek-V4-Pro-0813 and LongCat-Flash-Chat trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

DeepSeek-V4-Pro-0813 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Based on current benchmark, pricing, and model metadata for 2026.

Choose DeepSeek-V4-Pro-0813

  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Aug 2026

Choose LongCat-Flash-Chat

  • you want predictable pricing at $0.30/M input and $1.20/M output

At a glance

The differences that matter most.

DeepSeek-V4-Pro-0813
DeepSeek
LongCat-Flash-Chat
Meituan
Benchmark wins
—
—
Input price
$0.43 / M
$0.30 / M
Output price
$0.87 / M
$1.20 / M
Context window
1,048,576
128,000
Released
Aug 2026
Aug 2025
License
MIT
MIT

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

DeepSeek-V4-Pro-0813 and LongCat-Flash-Chatdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Playground indexes and blind preference scores

Pricing Analysis

Price comparison per million tokens

LongCat-Flash-Chat costs less

For input processing, DeepSeek-V4-Pro-0813 ($0.43/1M tokens) is 1.4x more expensive than LongCat-Flash-Chat ($0.30/1M tokens).

For output processing, DeepSeek-V4-Pro-0813 ($0.87/1M tokens) is 1.4x cheaper than LongCat-Flash-Chat ($1.20/1M tokens).

In conclusion, DeepSeek-V4-Pro-0813 is more expensive than LongCat-Flash-Chat.*

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

Lowest available price from all providers
Mon Aug 24 2026 • llm-stats.com
DeepSeek
DeepSeek-V4-Pro-0813
Input tokens$0.43
Output tokens$0.87
Best providerDeepSeek
Meituan
LongCat-Flash-Chat
Input tokens$0.30
Output tokens$1.20
Best providerMeituan
Notice missing or incorrect data?Start an Issue→

Model Size

Parameter count comparison

1040.0B diff

DeepSeek-V4-Pro-0813 has 1040.0B more parameters than LongCat-Flash-Chat, making it 185.7% larger.

DeepSeek
DeepSeek-V4-Pro-0813
1.6Tparameters
Meituan
LongCat-Flash-Chat
560.0Bparameters
1600.0B
DeepSeek-V4-Pro-0813
560.0B
LongCat-Flash-Chat

Context Window

Maximum input and output token capacity

DeepSeek-V4-Pro-0813 accepts 1,048,576 input tokens compared to LongCat-Flash-Chat's 128,000 tokens. DeepSeek-V4-Pro-0813 can generate longer responses up to 393,216 tokens, while LongCat-Flash-Chat is limited to 128,000 tokens.

DeepSeek
DeepSeek-V4-Pro-0813
Input1,048,576 tokens
Output393,216 tokens
Meituan
LongCat-Flash-Chat
Input128,000 tokens
Output128,000 tokens
Mon Aug 24 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-Pro-0813

MIT

Open weights

LongCat-Flash-Chat

MIT

Open weights

Release Timeline

When each model was launched

DeepSeek-V4-Pro-0813 was released on 2026-08-13, while LongCat-Flash-Chat was released on 2025-08-29.

DeepSeek-V4-Pro-0813 is 12 months newer than LongCat-Flash-Chat.

DeepSeek-V4-Pro-0813

Aug 13, 2026

1 weeks ago

11mo newer
LongCat-Flash-Chat

Aug 29, 2025

12 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-Pro-0813 is available from DeepSeek, DeepInfra, Novita, Together. LongCat-Flash-Chat is available from Meituan.

DeepSeek-V4-Pro-0813

deepseek logo
DeepSeek
Input Price:Input: $0.43/1MOutput Price:Output: $0.87/1M
deepinfra logo
Deepinfra
Input Price:Input: $1.30/1MOutput Price:Output: $2.60/1M
novita logo
Novita
Input Price:Input: $1.32/1MOutput Price:Output: $3.96/1M
together logo
Together
Input Price:Input: $1.32/1MOutput Price:Output: $3.96/1M

LongCat-Flash-Chat

meituan logo
Meituan
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M
* 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-Pro-0813 and LongCat-Flash-Chat side-by-side, then vote on the output you prefer.

DeepSeek-V4-Pro-0813
✓ Preferred
LongCat-Flash-Chat
Open in Playground

FAQ

Common questions about DeepSeek-V4-Pro-0813 vs LongCat-Flash-Chat.

Which is better, DeepSeek-V4-Pro-0813 or LongCat-Flash-Chat?

DeepSeek-V4-Pro-0813 (DeepSeek) and LongCat-Flash-Chat (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-Pro-0813 compare to LongCat-Flash-Chat in benchmarks?

DeepSeek-V4-Pro-0813 scores Terminal-Bench 2.1: 87.9%, CyberGym: 83.3%, Toolathlon: 74.1%, DSBench-FullStack: 71.1%, DSBench-Hard: 67.2%. LongCat-Flash-Chat scores MATH-500: 96.4%, MMLU: 89.7%, IFEval: 89.6%, ZebraLogic: 89.3%, HumanEval: 88.4%.

Is DeepSeek-V4-Pro-0813 cheaper than LongCat-Flash-Chat?

LongCat-Flash-Chat is 1.4x cheaper for input tokens. DeepSeek-V4-Pro-0813 costs $0.43/M input and $0.87/M output via deepseek. LongCat-Flash-Chat costs $0.30/M input and $1.20/M output via meituan.

What are the context window sizes for DeepSeek-V4-Pro-0813 and LongCat-Flash-Chat?

DeepSeek-V4-Pro-0813 supports 1.0M tokens and LongCat-Flash-Chat supports 128K 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-Pro-0813 and LongCat-Flash-Chat?

Key differences include context window (1.0M vs 128K), input pricing ($0.43 vs $0.30/M). See the full comparison above for benchmark-by-benchmark results.

Who makes DeepSeek-V4-Pro-0813 and LongCat-Flash-Chat?

DeepSeek-V4-Pro-0813 is developed by DeepSeek and LongCat-Flash-Chat is developed by Meituan.

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