Head-to-Head API Cost Benchmark

GPT-4o vs OpenAI o3-mini: API Price & Latency Comparison

On a standard B2B production workload (5,000 req/day), OpenAI o3-mini is 56.0% cheaper ($573.38/mo vs $1303.12/mo), while OpenAI o3-mini leads in token generation speed (95 tok/s).

Side-by-Side Specification & Billing Matrix

Metric GPT-4o (OpenAI) OpenAI o3-mini (OpenAI) Advantage
Standard Input / 1M Tokens $2.500 $1.100 OpenAI o3-mini
Cached Input / 1M Tokens $1.250 $0.550 OpenAI o3-mini
Output Generation / 1M Tokens $10.00 $4.40 OpenAI o3-mini
Intelligence / Benchmark Quality 1286 LMSYS Elo 1305 LMSYS Elo OpenAI o3-mini
Monthly Spend (5k req/day, 50% cache) $1303.12 / mo $573.38 / mo OpenAI o3-mini (-56.0%)
Context Window 128,000 tokens 200,000 tokens OpenAI o3-mini
Output Speed (Throughput) 85 tokens/sec 95 tokens/sec OpenAI o3-mini
Batch API Discount -50% (OpenAI) -50% (OpenAI) OpenAI
Primary Workload Fit Complex multi-step customer facing workflows, vision + JSON structured outputs Algorithmic code generation, math, STEM reasoning, automated QA agents Workload Dependent
Deploy / Console Access Try GPT-4o → Try OpenAI o3-mini → Open Full Simulator