DeepSeek V4 Flash is $0.17 cheaper per 1M input tokens (58% lower; 2.38x difference).
API cost decision in 10 seconds
🔥DeepSeek V4 Flash vs 🔥Gemini 2.5 Flash
Pick DeepSeek V4 Flash 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 Flash when budget is the priority.
On the standard 1M input plus 500K output workload, DeepSeek V4 Flash is estimated at $0.25 vs $1.55 for Gemini 2.5 Flash, saving $1.3 (83.7% lower).
Cost-first pickDeepSeek V4 Flash
Context-first pickBoth models
Sample savings$1.383.7%
10x traffic gap$12.98
The reported context window is tied, so cost and provider fit carry more weight. At 10x that traffic, the same price gap is about $12.98. Use the calculator below to replace the sample workload with your own token volume.
DeepSeek V4 Flash is $2.25 cheaper per 1M output tokens (89.9% lower; 9.92x difference).
Both models report the same context window at 1.05M tokens.
DeepSeek V4 Flash is $1.3 cheaper on the standard workload (83.7% 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
DeepSeek V4 Flash has the lower input price; DeepSeek V4 Flash has the lower output price; both models report the same context window. For the 1M input plus 500K output sample, DeepSeek V4 Flash is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $0.25 for DeepSeek V4 Flash and $1.55 for Gemini 2.5 Flash.
Choose DeepSeek V4 Flash when you care most about lower input-token price, and lower output-token price.
Choose Gemini 2.5 Flash when its provider, model quality, latency, or availability is more important than the numeric price/context winner.
- On the standard 1M input plus 500K output workload, DeepSeek V4 Flash is estimated at $0.25 vs $1.55 for Gemini 2.5 Flash, saving $1.3 (83.7% lower).
- DeepSeek V4 Flash is $1.3 cheaper on the standard workload (83.7% lower).
- DeepSeek V4 Flash is $0.17 cheaper per 1M input tokens (58% lower; 2.38x difference).
- DeepSeek V4 Flash is $2.25 cheaper per 1M output tokens (89.9% lower; 9.92x difference).
- Both models report the same context window at 1.05M tokens.
| Feature | 🔥DeepSeek V4 Flash (DeepSeek) | 🔥Gemini 2.5 Flash (Google) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.126 | $0.3 |
| Completion Price per 1M tokens | $0.252 | $2.5 |
| Sample Workload Cost 1M input + 500K output | $0.25 | $1.55 |
| Context Window | 1.05M | 1.05M |
| Release Date | 2026-04-24 | 2025-06-17 |
| Popularity Rank current rank | #4 | #13 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | DeepSeek V4 Flash | On the standard 1M input plus 500K output workload, DeepSeek V4 Flash is estimated at $0.25 vs $1.55 for Gemini 2.5 Flash, saving $1.3 (83.7% lower). |
| High-volume input processing | DeepSeek V4 Flash | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | DeepSeek V4 Flash | 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 Flash is an efficiency-optimized Mixture-of-Experts model from DeepSeek with 284B total parameters and 13B activated parameters, supporting a 1M-token context window. It is designed for fast inference and...
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...