Head-to-Head API Cost Benchmark

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

On a standard B2B production workload (5,000 req/day), GPT-4o mini is 91.2% cheaper ($78.19/mo vs $892.50/mo), while GPT-4o mini leads in token generation speed (140 tok/s).

Side-by-Side Specification & Billing Matrix

Metric Gemini 2.5 Pro (Google Gemini API) GPT-4o mini (OpenAI) Advantage
Standard Input / 1M Tokens $1.250 $0.150 GPT-4o mini
Cached Input / 1M Tokens $0.310 $0.075 GPT-4o mini
Output Generation / 1M Tokens $10.00 $0.60 GPT-4o mini
Intelligence / Benchmark Quality 1322 LMSYS Elo 1224 LMSYS Elo Gemini 2.5 Pro
Monthly Spend (5k req/day, 50% cache) $892.50 / mo $78.19 / mo GPT-4o mini (-91.2%)
Context Window 2,000,000 tokens 128,000 tokens Gemini 2.5 Pro
Output Speed (Throughput) 85 tokens/sec 140 tokens/sec GPT-4o mini
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 High-volume classification, extraction, RAG summarization, low-cost chatbots Workload Dependent
Deploy / Console Access Try Gemini 2.5 Pro → Try GPT-4o mini → Open Full Simulator