Model Comparison

DeepSeek-V4-Flash-0731 vs Gemini 1.5 FlashWhich is better in 2026?

Comparing DeepSeek-V4-Flash-0731 and Gemini 1.5 Flash across benchmarks, pricing, and capabilities.

Verdict: DeepSeek-V4-Flash-0731 vs Gemini 1.5 Flash — which is better?

DeepSeek-V4-Flash-0731 (by DeepSeek) and Gemini 1.5 Flash (by Google) 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 2.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Choose DeepSeek-V4-Flash-0731 if…

  • cost matters — it's about 2.3x cheaper per token
  • you want the most recent training data — it shipped Jul 2026
  • you need open weights you can self-host or fine-tune

Choose Gemini 1.5 Flash if…

  • you want predictable pricing at $0.15/M input and $0.60/M output

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

DeepSeek-V4-Flash-0731 and Gemini 1.5 Flashdon'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 1.7x cheaper than Gemini 1.5 Flash ($0.15/1M tokens).

For output processing, DeepSeek-V4-Flash-0731 ($0.18/1M tokens) is 3.3x cheaper than Gemini 1.5 Flash ($0.60/1M tokens).

In conclusion, Gemini 1.5 Flash is more expensive than DeepSeek-V4-Flash-0731.*

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

Lowest available price from all providers
Mon Aug 03 2026 • llm-stats.com
DeepSeek
DeepSeek-V4-Flash-0731
Input tokens$0.09
Output tokens$0.18
Best providerDeepinfra
Google
Gemini 1.5 Flash
Input tokens$0.15
Output tokens$0.60
Best providerGoogle
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Both models have the same input context window of 1,048,576 tokens. DeepSeek-V4-Flash-0731 can generate longer responses up to 65,536 tokens, while Gemini 1.5 Flash is limited to 8,192 tokens.

DeepSeek
DeepSeek-V4-Flash-0731
Input1,048,576 tokens
Output65,536 tokens
Google
Gemini 1.5 Flash
Input1,048,576 tokens
Output8,192 tokens
Mon Aug 03 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 1.5 Flash supports multimodal inputs, whereas DeepSeek-V4-Flash-0731 does not.

Gemini 1.5 Flash can handle both text and other forms of data like images, making it suitable for multimodal applications.

DeepSeek-V4-Flash-0731

Text
Images
Audio
Video

Gemini 1.5 Flash

Text
Images
Audio
Video

License

Usage and distribution terms

DeepSeek-V4-Flash-0731 is licensed under MIT, while Gemini 1.5 Flash uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

DeepSeek-V4-Flash-0731

MIT

Open weights

Gemini 1.5 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

DeepSeek-V4-Flash-0731 was released on 2026-07-31, while Gemini 1.5 Flash was released on 2024-05-01.

DeepSeek-V4-Flash-0731 is 27 months newer than Gemini 1.5 Flash.

DeepSeek-V4-Flash-0731

Jul 31, 2026

3 days ago

2.2yr newer
Gemini 1.5 Flash

May 1, 2024

2.3 years ago

Knowledge Cutoff

When training data ends

Gemini 1.5 Flash has a documented knowledge cutoff of 2023-11-01, while DeepSeek-V4-Flash-0731's cutoff date is not specified.

We can confirm Gemini 1.5 Flash's training data extends to 2023-11-01, but cannot make a direct comparison without DeepSeek-V4-Flash-0731's cutoff date.

DeepSeek-V4-Flash-0731

—

Gemini 1.5 Flash

Nov 2023

Provider Availability

DeepSeek-V4-Flash-0731 is available from DeepInfra, Fireworks, Novita. Gemini 1.5 Flash is available from Google.

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

Gemini 1.5 Flash

google logo
Google
Input Price:Input: $0.15/1MOutput Price:Output: $0.60/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

DeepSeek
Less expensive input tokens
Less expensive output tokens
Has open weights
Google
Supports multimodal inputs
DeepSeekDeepSeek-V4-Flash-0731
GoogleGemini 1.5 Flash
Compare in Playground

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against DeepSeek-V4-Flash-0731 and Gemini 1.5 Flash side-by-side, then vote on the output you prefer.

DeepSeek-V4-Flash-0731
✓ Preferred
Gemini 1.5 Flash
Open in Playground
AI Model Comparison Table
Feature
DeepSeek
DeepSeek-V4-Flash-0731
Google
Gemini 1.5 Flash

FAQ

Common questions about DeepSeek-V4-Flash-0731 vs Gemini 1.5 Flash.

Which is better, DeepSeek-V4-Flash-0731 or Gemini 1.5 Flash?

DeepSeek-V4-Flash-0731 (DeepSeek) and Gemini 1.5 Flash (Google) 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 Gemini 1.5 Flash 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%. Gemini 1.5 Flash scores XSTest: 97.0%, FLEURS: 90.4%, HellaSwag: 86.5%, GSM8k: 86.2%, BIG-Bench Hard: 85.5%.

Is DeepSeek-V4-Flash-0731 cheaper than Gemini 1.5 Flash?

DeepSeek-V4-Flash-0731 is 1.7x cheaper for input tokens. DeepSeek-V4-Flash-0731 costs $0.09/M input and $0.18/M output via deepinfra. Gemini 1.5 Flash costs $0.15/M input and $0.60/M output via google.

What are the context window sizes for DeepSeek-V4-Flash-0731 and Gemini 1.5 Flash?

DeepSeek-V4-Flash-0731 supports 1.0M tokens and Gemini 1.5 Flash supports 1.0M 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 Gemini 1.5 Flash?

Key differences include input pricing ($0.09 vs $0.15/M), multimodal support (no vs yes), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes DeepSeek-V4-Flash-0731 and Gemini 1.5 Flash?

DeepSeek-V4-Flash-0731 is developed by DeepSeek and Gemini 1.5 Flash is developed by Google.

Related comparisons