Model Comparison

DeepSeek R1 Zero vs DeepSeek-V4-Flash-0731Which is better in 2026?

Comparing DeepSeek R1 Zero and DeepSeek-V4-Flash-0731 across benchmarks, pricing, and capabilities.

Verdict: DeepSeek R1 Zero vs DeepSeek-V4-Flash-0731 — which is better?

DeepSeek R1 Zero (by DeepSeek) and DeepSeek-V4-Flash-0731 (by DeepSeek) 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.

Choose DeepSeek R1 Zero if…

  • you are already invested in the DeepSeek ecosystem

Choose DeepSeek-V4-Flash-0731 if…

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

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

DeepSeek R1 Zero and DeepSeek-V4-Flash-0731don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Model Size

Parameter count comparison

367.0B diff

DeepSeek R1 Zero has 367.0B more parameters than DeepSeek-V4-Flash-0731, making it 120.7% larger.

DeepSeek
DeepSeek R1 Zero
671.0Bparameters
DeepSeek
DeepSeek-V4-Flash-0731
304.0Bparameters
671.0B
DeepSeek R1 Zero
304.0B
DeepSeek-V4-Flash-0731

Context Window

Maximum input and output token capacity

Only DeepSeek-V4-Flash-0731 specifies input context (1,048,576 tokens). Only DeepSeek-V4-Flash-0731 specifies output context (65,536 tokens).

DeepSeek
DeepSeek R1 Zero
Input- tokens
Output- tokens
DeepSeek
DeepSeek-V4-Flash-0731
Input1,048,576 tokens
Output65,536 tokens
Mon Aug 03 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 R1 Zero

MIT

Open weights

DeepSeek-V4-Flash-0731

MIT

Open weights

Release Timeline

When each model was launched

DeepSeek R1 Zero was released on 2025-01-20, while DeepSeek-V4-Flash-0731 was released on 2026-07-31.

DeepSeek-V4-Flash-0731 is 19 months newer than DeepSeek R1 Zero.

DeepSeek R1 Zero

Jan 20, 2025

1.5 years ago

DeepSeek-V4-Flash-0731

Jul 31, 2026

2 days ago

1.5yr newer

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→

Key Takeaways

DeepSeek

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

DeepSeek
Larger context window (1,048,576 tokens)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against DeepSeek R1 Zero and DeepSeek-V4-Flash-0731 side-by-side, then vote on the output you prefer.

DeepSeek R1 Zero
✓ Preferred
DeepSeek-V4-Flash-0731
Open in Playground
AI Model Comparison Table
Feature
DeepSeek
DeepSeek R1 Zero
DeepSeek
DeepSeek-V4-Flash-0731

FAQ

Common questions about DeepSeek R1 Zero vs DeepSeek-V4-Flash-0731.

Which is better, DeepSeek R1 Zero or DeepSeek-V4-Flash-0731?

DeepSeek R1 Zero (DeepSeek) and DeepSeek-V4-Flash-0731 (DeepSeek) 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 R1 Zero compare to DeepSeek-V4-Flash-0731 in benchmarks?

DeepSeek R1 Zero scores MATH-500: 95.9%, AIME 2024: 86.7%, GPQA: 73.3%, LiveCodeBench: 50.0%. 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%.

What are the context window sizes for DeepSeek R1 Zero and DeepSeek-V4-Flash-0731?

DeepSeek R1 Zero supports an unknown number of tokens and DeepSeek-V4-Flash-0731 supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

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