Comparison
DeepSeek V4 Pro vs Gemini 3.5 Flash
DeepSeek V4 Pro costs 71% less per input token than Gemini 3.5 Flash. DeepSeek V4 Pro is 90% cheaper on output tokens. Gemini 3.5 Flash has the larger context window than DeepSeek V4 Pro.
| Field | DeepSeek V4 Pro | Gemini 3.5 Flash |
|---|---|---|
| Provider | DeepSeek | |
| Context window | 1M | 1M |
| Max output | 384K | 65.5K |
| Input / 1M | $0.43571% cheaper | $1.50 |
| Output / 1M | $0.8790% cheaper | $9.00 |
| Cached input / 1M | $0.003698% cheaper | $0.15 |
| Batch discount | — | 50% |
| Release date | — | — |
Worked cost examples
Estimated monthly cost on three common usage shapes
| Workload | DeepSeek V4 Pro | Gemini 3.5 Flash |
|---|---|---|
Chatbot 800 input / 200 output tokens per request, 100,000 requests/month | $52.20cheaper | $300.00 |
RAG pipeline 6,000 input / 700 output tokens per request, 30,000 requests/month | $96.57cheaper | $459.00 |
Batch summarization 20,000 input / 1,500 output tokens per request, 5,000 requests/month | $50.03cheaper | $217.50 |
DeepSeek V4 Pro vs Gemini 3.5 Flash FAQ
- Is DeepSeek V4 Pro cheaper than Gemini 3.5 Flash?
- DeepSeek V4 Pro costs $0.435 per 1M input tokens versus $1.50 for Gemini 3.5 Flash — DeepSeek V4 Pro is 71% cheaper per input token.
- Which is cheaper for output tokens, DeepSeek V4 Pro or Gemini 3.5 Flash?
- DeepSeek V4 Pro charges $0.87 per 1M output tokens; Gemini 3.5 Flash charges $9.00 per 1M output tokens.
- Which has the larger context window, DeepSeek V4 Pro or Gemini 3.5 Flash?
- Gemini 3.5 Flash does, with a 1,048,576-token context window.
- Do DeepSeek V4 Pro and Gemini 3.5 Flash offer cache pricing?
- DeepSeek V4 Pro discounts cached input to $0.0036 per 1M tokens. Gemini 3.5 Flash discounts cached input to $0.15 per 1M tokens.
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