DeepSeek V4 Flash 0423 vs Gemini 2.5 Flash Lite: cost compared
Across 5 common app types, DeepSeek V4 Flash 0423 is on average 1.4× cheaper. DeepSeek V4 Flash 0423 is cheaper in 5 of 5 scenarios. Quality index: DeepSeek V4 Flash 0423 24.4 vs Gemini 2.5 Flash Lite 10.4.
| Price (per 1M tokens) | DeepSeek V4 Flash 0423 | Gemini 2.5 Flash Lite |
|---|---|---|
| Input | $0.091 | $0.1 |
| Output | $0.182 | $0.4 |
| Cached input | $0.0182 | $0.01 |
| Context window | 1,048,576 | 1,048,576 |
| Batch pricing | — | yes |
Monthly cost by app type
| App | DeepSeek V4 Flash 0423 | Gemini 2.5 Flash Lite | |
|---|---|---|---|
| AI chatbot | $54.46 | $86.55 | tweak → |
| RAG app | $59.62 | $76.56 | tweak → |
| Discord bot | $75.84 | $98.37 | tweak → |
| document summarizer | $18.25 | $23.22 | tweak → |
| AI writing tool | $37.01 | $64.40 | tweak → |
Prices only tell half the story. If DeepSeek V4 Flash 0423 is good enough for most of your traffic, route easy requests there and save the other model for the hard ones; the calculator's "cheapest smart mix" estimates that split.
Compare them in the calculator →
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Prices: OpenRouter list prices (USD per 1M tokens), updated 2026-10-15. Estimates only; a month is 30 days. See how the math works.