Head-to-Head API Cost Benchmark

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

On a standard B2B production workload (5,000 req/day), Gemini 2.5 Flash is 96.5% cheaper ($71.16/mo vs $2025.00/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) Perplexity Sonar Pro (Perplexity Sonar API) Advantage
Standard Input / 1M Tokens $0.150 $3.000 Gemini 2.5 Flash
Cached Input / 1M Tokens $0.037 $3.000 Gemini 2.5 Flash
Output Generation / 1M Tokens $0.60 $15.00 Gemini 2.5 Flash
Intelligence / Benchmark Quality 1264 LMSYS Elo 1260 LMSYS Elo Gemini 2.5 Flash
Monthly Spend (5k req/day, 50% cache) $71.16 / mo $2025.00 / mo Gemini 2.5 Flash (-96.5%)
Context Window 1,000,000 tokens 200,000 tokens Gemini 2.5 Flash
Output Speed (Throughput) 180 tokens/sec 75 tokens/sec Gemini 2.5 Flash
Batch API Discount -50% (Google Gemini API) -0% (Perplexity Sonar API) Google Gemini API
Primary Workload Fit Large-scale data extraction, PDF/document parsing, high-throughput pipelines Market research agents, citation-backed fact checking, B2B company enrichment Workload Dependent
Deploy / Console Access Try Gemini 2.5 Flash → Try Perplexity Sonar Pro → Open Full Simulator