Head-to-Head API Cost Benchmark

Claude 3.7 Sonnet vs OpenAI o3-mini: API Price & Latency Comparison

On a standard B2B production workload (5,000 req/day), OpenAI o3-mini is 62.2% cheaper ($573.38/mo vs $1518.75/mo), while OpenAI o3-mini leads in token generation speed (95 tok/s).

Side-by-Side Specification & Billing Matrix

Metric Claude 3.7 Sonnet (Anthropic) OpenAI o3-mini (OpenAI) Advantage
Standard Input / 1M Tokens $3.000 $1.100 OpenAI o3-mini
Cached Input / 1M Tokens $0.300 $0.550 Claude 3.7 Sonnet
Output Generation / 1M Tokens $15.00 $4.40 OpenAI o3-mini
Intelligence / Benchmark Quality 1318 LMSYS Elo 1305 LMSYS Elo Claude 3.7 Sonnet
Monthly Spend (5k req/day, 50% cache) $1518.75 / mo $573.38 / mo OpenAI o3-mini (-62.2%)
Context Window 200,000 tokens 200,000 tokens Claude 3.7 Sonnet
Output Speed (Throughput) 75 tokens/sec 95 tokens/sec OpenAI o3-mini
Batch API Discount -50% (Anthropic) -50% (OpenAI) Anthropic
Primary Workload Fit Autonomous coding agents, complex refactoring, nuanced B2B content generation Algorithmic code generation, math, STEM reasoning, automated QA agents Workload Dependent
Deploy / Console Access Try Claude 3.7 Sonnet → Try OpenAI o3-mini → Open Full Simulator