DeepSeek R1 Zero vs LongCat-Flash-Chat
DeepSeek R1 Zero shows notably better performance in the majority of benchmarks.
DeepSeek · Meituan · Updated for 2026
Which is better?
DeepSeek R1 Zero outperforms in 2 benchmarks (GPQA, LiveCodeBench), while LongCat-Flash-Chat is better at 1 benchmark (MATH-500). DeepSeek R1 Zero shows notably better performance in the majority of benchmarks.
Based on current benchmark, pricing, and model metadata for 2026.
Choose DeepSeek R1 Zero
- you want the strongest raw capability — it leads on 2 of 3 shared benchmarks
Choose LongCat-Flash-Chat
- you want the most recent training data — it shipped Aug 2025
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
DeepSeek R1 Zero outperforms in 2 benchmarks (GPQA, LiveCodeBench), while LongCat-Flash-Chat is better at 1 benchmark (MATH-500).
DeepSeek R1 Zero shows notably better performance in the majority of benchmarks.
Arena Performance
Playground indexes and blind preference scores
Model Size
Parameter count comparison
DeepSeek R1 Zero has 111.0B more parameters than LongCat-Flash-Chat, making it 19.8% larger.
Context Window
Maximum input and output token capacity
Only LongCat-Flash-Chat specifies input context (128,000 tokens). Only LongCat-Flash-Chat specifies output context (128,000 tokens).
License
Usage and distribution terms
Both models are licensed under MIT.
Both models share the same licensing terms, providing consistent usage rights.
MIT
Open weights
MIT
Open weights
Release Timeline
When each model was launched
DeepSeek R1 Zero was released on 2025-01-20, while LongCat-Flash-Chat was released on 2025-08-29.
LongCat-Flash-Chat is 7 months newer than DeepSeek R1 Zero.
Jan 20, 2025
1.6 years ago
Aug 29, 2025
12 months ago
7mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Outputs Comparison
Judge for yourself.
Run your own prompts against DeepSeek R1 Zero and LongCat-Flash-Chat side-by-side, then vote on the output you prefer.
FAQ
Common questions about DeepSeek R1 Zero vs LongCat-Flash-Chat.