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DeepSeek-V4-Flash vs Gemini 2.5 Flash

Side-by-side API economics and benchmarks. Per-1M input and output rates, context window, and verified metrics.

Tale of the tape

Head-to-head specs pulled from each model profile.

Metric DeepSeek-V4-Flash Gemini 2.5 Flash
Input cost / 1M $0.14 $0.30
Output cost / 1M $0.28 $2.50
Context window 1,000,000 tokens 1,000,000 tokens
MMLU score

Cost verdict

Enter monthly input and output volumes to see total cost savings.

DeepSeek-V4-Flash

Input: 1M × $0.14 = $0.14
Output: 1M × $0.28 = $0.28
Total
$0.42

Gemini 2.5 Flash

Input: 1M × $0.30 = $0.30
Output: 1M × $2.50 = $2.50
Total
$2.80

Total cost savings

$2.38

DeepSeek-V4-Flash saves $2.38 per month vs the other model at this volume.

Model routing savings

Uses this page's verified rates. Gemini 2.5 Flash is the premium route (higher combined per-1M cost); DeepSeek-V4-Flash handles routine traffic.

Premium model

Gemini 2.5 Flash

$0.30 in · $2.50 out / 1M

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Economical model

DeepSeek-V4-Flash

$0.14 in · $0.28 out / 1M

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All premium

Gemini 2.5 Flash

$140.00

100% of input and output on the premium route

Routed stack

80%DeepSeek-V4-Flash

Gemini 2.5 Flash

$44.80

Routine slice
$16.80
Premium slice
$28.00

Monthly savings

$95.20

68% lower

Rates pulled from this page's model database entries (gemini-2-5-flash, deepseek-v4-flash) — same per-1M input/output figures as Tale of the tape. Production routing needs quality gates and monitoring.

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