Gemini 2.5 Flash is $0.14 cheaper per 1M input tokens (31% lower; 1.45x difference).
API cost decision in 10 seconds
🔥DeepSeek V4 Pro vs 🔥Gemini 2.5 Flash
Pick DeepSeek V4 Pro when budget is the priority.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick DeepSeek V4 Pro when budget is the priority.
On the standard 1M input plus 500K output workload, DeepSeek V4 Pro is estimated at $0.87 vs $1.55 for Gemini 2.5 Flash, saving $0.68 (43.9% lower).
Cost-first pickDeepSeek V4 Pro
Context-first pickBoth models
Sample savings$0.6843.9%
10x traffic gap$6.8
The reported context window is tied, so cost and provider fit carry more weight. At 10x that traffic, the same price gap is about $6.8. Use the calculator below to replace the sample workload with your own token volume.
DeepSeek V4 Pro is $1.63 cheaper per 1M output tokens (65.2% lower; 2.87x difference).
Both models report the same context window at 1.05M tokens.
DeepSeek V4 Pro is $0.68 cheaper on the standard workload (43.9% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Gemini 2.5 Flash has the lower input price; DeepSeek V4 Pro has the lower output price; both models report the same context window. For the 1M input plus 500K output sample, DeepSeek V4 Pro is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $0.87 for DeepSeek V4 Pro and $1.55 for Gemini 2.5 Flash.
Choose DeepSeek V4 Pro when you care most about lower output-token price.
Choose Gemini 2.5 Flash when you care most about lower input-token price.
- On the standard 1M input plus 500K output workload, DeepSeek V4 Pro is estimated at $0.87 vs $1.55 for Gemini 2.5 Flash, saving $0.68 (43.9% lower).
- DeepSeek V4 Pro is $0.68 cheaper on the standard workload (43.9% lower).
- Gemini 2.5 Flash is $0.14 cheaper per 1M input tokens (31% lower; 1.45x difference).
- DeepSeek V4 Pro is $1.63 cheaper per 1M output tokens (65.2% lower; 2.87x difference).
- Both models report the same context window at 1.05M tokens.
| Feature | 🔥DeepSeek V4 Pro (DeepSeek) | 🔥Gemini 2.5 Flash (Google) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.435 | $0.3 |
| Completion Price per 1M tokens | $0.87 | $2.5 |
| Sample Workload Cost 1M input + 500K output | $0.87 | $1.55 |
| Context Window | 1.05M | 1.05M |
| Release Date | 2026-04-24 | 2025-06-17 |
| Popularity Rank current rank | #8 | #13 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | DeepSeek V4 Pro | On the standard 1M input plus 500K output workload, DeepSeek V4 Pro is estimated at $0.87 vs $1.55 for Gemini 2.5 Flash, saving $0.68 (43.9% lower). |
| High-volume input processing | Gemini 2.5 Flash | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | DeepSeek V4 Pro | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Tie | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
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Open Google modelsDeepSeek V4 Pro is a large-scale Mixture-of-Experts model from DeepSeek with 1.6T total parameters and 49B activated parameters, supporting a 1M-token context window. It is designed for advanced reasoning, coding,...
Gemini 2.5 Flash is Google's state-of-the-art workhorse model, specifically designed for advanced reasoning, coding, mathematics, and scientific tasks. It includes built-in "thinking" capabilities, enabling it to provide responses with greater...