Gemini 3.8 Flash vs Gemini 4 Hydrogen: API pricing
As of Nov 14, 2026, Gemini 3.8 Flash costs $0.75 input / $3.75 output per million tokens from Google, and Gemini 4 Hydrogen costs $1.50 / $7.50 from Google. For 10M input and 2M output tokens a month, Gemini 3.8 Flash comes to $15.00 and Gemini 4 Hydrogen to $30.00, so Gemini 3.8 Flash is 50% cheaper than Gemini 4 Hydrogen. On LMArena, Gemini 4 Hydrogen scores higher, 1502 against 1500.
| Detail | Gemini 3.8 Flash | Gemini 4 Hydrogen |
|---|---|---|
| Est. per month | $15.00official priceCheaper | $30.00official price |
| Maker | ||
| Official input / output | $0.75 / $3.75per million tokens | $1.50 / $7.50per million tokens |
| Cached input | $0.075 | $0.075 |
| Cheapest provider | $0.75 / $3.75Google Gemini | $1.50 / $7.50Google Gemini |
| Providers | 10 | 4 |
| Context | 1.05M | 1.05M |
| LMArena overall | 1500 · #10 | 1502 · #8 |
| LMArena coding | 1510 · #15 | 1516 · #12 |
| Features |
Every provider's price: Gemini 3.8 Flash · Gemini 4 Hydrogen
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