Head-to-Head API Cost Benchmark

Gemini 2.5 Flash vs Gemini 2.5 Pro: API Price & Latency Comparison

On a standard B2B production workload (5,000 req/day), Gemini 2.5 Flash is 92.0% cheaper ($71.16/mo vs $892.50/mo), while Gemini 2.5 Flash leads in token generation speed (180 tok/s).

Side-by-Side Specification & Billing Matrix

Metric Gemini 2.5 Flash (Google Gemini API) Gemini 2.5 Pro (Google Gemini API) Advantage
Standard Input / 1M Tokens $0.150 $1.250 Gemini 2.5 Flash
Cached Input / 1M Tokens $0.037 $0.310 Gemini 2.5 Flash
Output Generation / 1M Tokens $0.60 $10.00 Gemini 2.5 Flash
Intelligence / Benchmark Quality 1264 LMSYS Elo 1322 LMSYS Elo Gemini 2.5 Pro
Monthly Spend (5k req/day, 50% cache) $71.16 / mo $892.50 / mo Gemini 2.5 Flash (-92.0%)
Context Window 1,000,000 tokens 2,000,000 tokens Gemini 2.5 Pro
Output Speed (Throughput) 180 tokens/sec 85 tokens/sec Gemini 2.5 Flash
Batch API Discount -50% (Google Gemini API) -50% (Google Gemini API) Google Gemini API
Primary Workload Fit Large-scale data extraction, PDF/document parsing, high-throughput pipelines Massive repository analysis (2M context), video/audio understanding, deep reasoning Workload Dependent
Deploy / Console Access Try Gemini 2.5 Flash → Try Gemini 2.5 Pro → Open Full Simulator