Head-to-Head API Cost Benchmark

DeepSeek-V3 (Chat) vs Gemini 2.5 Flash: API Price & Latency Comparison

On a standard B2B production workload (5,000 req/day), Gemini 2.5 Flash is 45.2% cheaper ($71.16/mo vs $129.75/mo), while Gemini 2.5 Flash leads in token generation speed (180 tok/s).

Side-by-Side Specification & Billing Matrix

Metric DeepSeek-V3 (Chat) (DeepSeek API) Gemini 2.5 Flash (Google Gemini API) Advantage
Standard Input / 1M Tokens $0.270 $0.150 Gemini 2.5 Flash
Cached Input / 1M Tokens $0.070 $0.037 Gemini 2.5 Flash
Output Generation / 1M Tokens $1.10 $0.60 Gemini 2.5 Flash
Intelligence / Benchmark Quality 1282 LMSYS Elo 1264 LMSYS Elo DeepSeek-V3 (Chat)
Monthly Spend (5k req/day, 50% cache) $129.75 / mo $71.16 / mo Gemini 2.5 Flash (-45.2%)
Context Window 64,000 tokens 1,000,000 tokens Gemini 2.5 Flash
Output Speed (Throughput) 60 tokens/sec 180 tokens/sec Gemini 2.5 Flash
Batch API Discount -50% (DeepSeek API) -50% (Google Gemini API) DeepSeek API
Primary Workload Fit High-intelligence general tasks & translation where prompt caching saves 75%+ Large-scale data extraction, PDF/document parsing, high-throughput pipelines Workload Dependent
Deploy / Console Access Try DeepSeek-V3 (Chat) → Try Gemini 2.5 Flash → Open Full Simulator