Gemini 3.8 Flash vs DeepSeek V4.1 Flash
Short answer
DeepSeek V4.1 Flash is about 6x cheaper than Gemini 3.8 Flash for a typical 3:1 input-to-output token mix ($0.26 vs $1.50 per 1M tokens). Gemini 3.8 Flash scores higher on ARC-AGI-2 (89.2% vs 78.1%).
Prices updated Nov 13, 2026 (APIpulse, CC BY 4.0) · Benchmarks: ARC Prize, Vals.ai · all models
| Gemini 3.8 Flash | DeepSeek V4.1 Flashcheaper | |
|---|---|---|
| Provider | DeepSeek | |
| Input / 1M tokens | $0.75 | $0.15 |
| Output / 1M tokens | $3.75 | $0.60 |
| Blended (3:1) / 1M | $1.50 | $0.26 |
| Context window | 1M | 1M |
| ARC-AGI-2 | 89.2% (High) | 78.1% (Max) |
| SWE-bench Verified | 80% | — |
API cost calculator
Enter your monthly usage in millions of tokens (1M tokens ≈ 750,000 words).
Standard rates; batch processing and prompt caching can lower the bill.
Frequently asked questions
Which is cheaper, Gemini 3.8 Flash or DeepSeek V4.1 Flash?
DeepSeek V4.1 Flash is about 6x cheaper than Gemini 3.8 Flash for a typical 3:1 input-to-output token mix ($0.26 vs $1.50 per 1M tokens).
How much do Gemini 3.8 Flash and DeepSeek V4.1 Flash cost per month?
For 10M input and 2M output tokens a month: Gemini 3.8 Flash costs $15 and DeepSeek V4.1 Flash costs $2.70.
More: Gemini 3.8 Flash pricing · DeepSeek V4.1 Flash pricing · all API prices
Benchmarks updated Nov 15, 2026.