Model Comparison
DeepSeek-V4-Flash-0731 vs Gemini 3.5 Flash-LiteWhich is better in 2026?
DeepSeek-V4-Flash-0731 significantly outperforms across most benchmarks. DeepSeek-V4-Flash-0731 is 7.6x cheaper per token.
Verdict: DeepSeek-V4-Flash-0731 vs Gemini 3.5 Flash-Lite — which is better?
DeepSeek-V4-Flash-0731 (by DeepSeek) and Gemini 3.5 Flash-Lite (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.
DeepSeek-V4-Flash-0731 outperforms in 1 benchmarks (Terminal-Bench 2.1), while Gemini 3.5 Flash-Lite is better at 0 benchmarks. DeepSeek-V4-Flash-0731 significantly outperforms across most benchmarks.
On price, DeepSeek-V4-Flash-0731 is roughly 7.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Choose DeepSeek-V4-Flash-0731 if…
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
- cost matters — it's about 7.6x 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 3.5 Flash-Lite if…
- you want predictable pricing at $0.30/M input and $2.50/M output
Performance Benchmarks
Comparative analysis across standard metrics
DeepSeek-V4-Flash-0731 outperforms in 1 benchmarks (Terminal-Bench 2.1), while Gemini 3.5 Flash-Lite is better at 0 benchmarks.
DeepSeek-V4-Flash-0731 significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, DeepSeek-V4-Flash-0731 ($0.09/1M tokens) is 3.3x cheaper than Gemini 3.5 Flash-Lite ($0.30/1M tokens).
For output processing, DeepSeek-V4-Flash-0731 ($0.18/1M tokens) is 13.9x cheaper than Gemini 3.5 Flash-Lite ($2.50/1M tokens).
In conclusion, Gemini 3.5 Flash-Lite is more expensive than DeepSeek-V4-Flash-0731.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Both models have the same input context window of 1,048,576 tokens. Both models can generate responses up to 65,536 tokens.
Input Capabilities
Supported data types and modalities
Gemini 3.5 Flash-Lite supports multimodal inputs, whereas DeepSeek-V4-Flash-0731 does not.
Gemini 3.5 Flash-Lite can handle both text and other forms of data like images, making it suitable for multimodal applications.
DeepSeek-V4-Flash-0731
Gemini 3.5 Flash-Lite
License
Usage and distribution terms
DeepSeek-V4-Flash-0731 is licensed under MIT, while Gemini 3.5 Flash-Lite uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
MIT
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
DeepSeek-V4-Flash-0731 was released on 2026-07-31, while Gemini 3.5 Flash-Lite was released on 2026-07-21.
DeepSeek-V4-Flash-0731 is 0 month newer than Gemini 3.5 Flash-Lite.
Jul 31, 2026
3 days ago
1w newerJul 21, 2026
1 weeks ago
Knowledge Cutoff
When training data ends
Gemini 3.5 Flash-Lite has a documented knowledge cutoff of 2026-03-31, while DeepSeek-V4-Flash-0731's cutoff date is not specified.
We can confirm Gemini 3.5 Flash-Lite's training data extends to 2026-03-31, but cannot make a direct comparison without DeepSeek-V4-Flash-0731's cutoff date.
—
Mar 2026
Provider Availability
DeepSeek-V4-Flash-0731 is available from DeepInfra, Fireworks, Novita. Gemini 3.5 Flash-Lite is available from Google.
DeepSeek-V4-Flash-0731
Gemini 3.5 Flash-Lite
Outputs Comparison
Key Takeaways
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against DeepSeek-V4-Flash-0731 and Gemini 3.5 Flash-Lite side-by-side, then vote on the output you prefer.
| Feature | | |
|---|
FAQ
Common questions about DeepSeek-V4-Flash-0731 vs Gemini 3.5 Flash-Lite.