Head-to-Head API Cost Benchmark

Gemini 2.5 Pro vs GPT-4o: API Price & Latency Comparison

On a standard B2B production workload (5,000 req/day), Gemini 2.5 Pro is 31.5% cheaper ($892.50/mo vs $1303.12/mo), while Gemini 2.5 Pro leads in token generation speed (85 tok/s).

Side-by-Side Specification & Billing Matrix

Metric Gemini 2.5 Pro (Google Gemini API) GPT-4o (OpenAI) Advantage
Standard Input / 1M Tokens $1.250 $2.500 Gemini 2.5 Pro
Cached Input / 1M Tokens $0.310 $1.250 Gemini 2.5 Pro
Output Generation / 1M Tokens $10.00 $10.00 Gemini 2.5 Pro
Intelligence / Benchmark Quality 1322 LMSYS Elo 1286 LMSYS Elo Gemini 2.5 Pro
Monthly Spend (5k req/day, 50% cache) $892.50 / mo $1303.12 / mo Gemini 2.5 Pro (-31.5%)
Context Window 2,000,000 tokens 128,000 tokens Gemini 2.5 Pro
Output Speed (Throughput) 85 tokens/sec 85 tokens/sec Gemini 2.5 Pro
Batch API Discount -50% (Google Gemini API) -50% (OpenAI) Google Gemini API
Primary Workload Fit Massive repository analysis (2M context), video/audio understanding, deep reasoning Complex multi-step customer facing workflows, vision + JSON structured outputs Workload Dependent
Deploy / Console Access Try Gemini 2.5 Pro → Try GPT-4o → Open Full Simulator