AI model comparison
DeepSeek V4 Flash 0731 vs Gemini 3.5 Flash
Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.
DeepSeek
DeepSeek V4 Flash 0731
DeepSeek V4 Flash 0731 is a sparse mixture-of-experts model from DeepSeek, with 13B active parameters out of 284B total.
- Input / 1M
- $0.00
- Output / 1M
- $1.28
- Context
- 1.05M
Gemini 3.5 Flash
Gemini 3.5 Flash is Google's high-efficiency multimodal model, bringing near-Pro level coding and reasoning at Flash-tier cost and speed.
- Input / 1M
- $1.50
- Output / 1M
- $9
- Context
- 1.05M
At a glance
Quick verdict
How the two models stack up on the things people ask about most.
Lower price
DeepSeek V4 Flash 0731
11.5x cheaper for a typical chat
Higher intelligence score
DeepSeek V4 Flash 0731
34.3 vs 33.6 on Artificial Analysis
Larger context window
Tie
1.05M vs 1.05M tokens
Newer release
DeepSeek V4 Flash 0731
Released July 31, 2026
Benchmarks
Benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
DeepSeek V4 Flash 073134.3Gemini 3.5 Flash33.6Coding index
DeepSeek V4 Flash 073169.1Gemini 3.5 FlashNot availableAgentic index
DeepSeek V4 Flash 073141Gemini 3.5 FlashNot availablePricing
DeepSeek V4 Flash 0731 vs Gemini 3.5 Flash API pricing
Per-token API rates. Cheaper option highlighted.
| Metric | DeepSeek V4 Flash 0731 | Gemini 3.5 Flash |
|---|---|---|
| Input tokensPer 1M tokens | $0.00 | $1.50 |
| Output tokensPer 1M tokens | $1.28 | $9 |
| Cached input (read)Per 1M tokens | $0.00 | $0.15 |
| Cache writePer 1M tokens | Not available | $0.08 |
| Web searchPer request | Not available | $0.014 |
What it costs in practice
Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.
Chat message
2K in, 500 out
DeepSeek V4 Flash 0731$0.65Gemini 3.5 Flash$7.50Coding task
30K in, 4K out
DeepSeek V4 Flash 0731$5.26$5.26 cachedGemini 3.5 Flash$81$40.50 cachedLong document summary
150K in, 2K out
DeepSeek V4 Flash 0731$3.28$3.28 cachedGemini 3.5 Flash$243$40.50 cachedSpecs
Context window and capabilities
How much each model can read, how much it can write, and what it accepts as input.
| Metric | DeepSeek V4 Flash 0731 | Gemini 3.5 Flash |
|---|---|---|
| Context window | 1.05M tokens | 1.05M tokens |
| Max output | 944K tokens | 66K tokens |
| Input types | Text | Audio, File, Image, Text, Video |
| Output types | Text | Text |
| Reasoning effort levels | Max, High, Low | High, Medium, Low, Minimal |
| Default reasoning effort | High | Medium |
| Release date | July 31, 2026 | May 19, 2026 |
Features
Supported features
API features available for each model.
| Metric | DeepSeek V4 Flash 0731 | Gemini 3.5 Flash |
|---|---|---|
| Tool calling | Supported | Supported |
| Structured outputs | Supported | Supported |
| JSON mode | Supported | Supported |
| Reasoning | Supported | Supported |
| Temperature | Supported | Supported |
| Stop sequences | Supported | Supported |
| Deterministic seed | Supported | Supported |
| Verbosity control | Not supported | Not supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
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Gemini 3.5 FlashView full model details- Gemini 3.5 Flash vs Gemini 3.8 Flash
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Our take
DeepSeek V4 Flash 0731 is 11.5x cheaper for a typical chat. DeepSeek V4 Flash 0731 scores higher on the Artificial Analysis Intelligence Index (34.3 vs 33.6). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.
FAQ
Frequently asked questions
Is DeepSeek V4 Flash 0731 or Gemini 3.5 Flash cheaper?
DeepSeek V4 Flash 0731 is cheaper for a typical chat (2K input tokens and 500 output tokens). DeepSeek V4 Flash 0731 costs $0.00 per 1M input tokens and $1.28 per 1M output tokens, while Gemini 3.5 Flash costs $1.50 per 1M input tokens and $9 per 1M output tokens.
Which has a bigger context window, DeepSeek V4 Flash 0731 or Gemini 3.5 Flash?
DeepSeek V4 Flash 0731 supports up to 1.05M tokens of context, compared with 1.05M for Gemini 3.5 Flash.
Is DeepSeek V4 Flash 0731 smarter than Gemini 3.5 Flash?
On the Artificial Analysis Intelligence Index, DeepSeek V4 Flash 0731 scores 34.3 and Gemini 3.5 Flash scores 33.6, putting DeepSeek V4 Flash 0731 ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.
Can I use DeepSeek V4 Flash 0731 and Gemini 3.5 Flash at the same time?
Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see DeepSeek V4 Flash 0731 and Gemini 3.5 Flash answer side by side and keep the better response.
Why choose? Ask both.
Send one prompt to DeepSeek V4 Flash 0731 and Gemini 3.5 Flash at the same time. Compare the answers side by side and keep the best one.