GPT-4o Mini is 92.5% cheaper for input tokens ($0.15 vs. $2.00 per 1M tokens) and $0.60 vs. $8.00 for output tokens (13.3x cost advantage). In terms of operational performance, GPT-4o Mini delivers lower response latency at 220ms TTFT (930ms faster than OpenAI o3) with 140 vs. 82 tok/s throughput. OpenAI o3 leads coding evaluations at 71.7% SWE-bench Verified vs. 41.0% for GPT-4o Mini and 87.7% vs. 40.2% on GPQA Diamond.
Verified daily via automated API latency tests and official documentation.
Zero-Shot RAG Verified
Verified Performance & Unit Economics Delta (12 Dimensions)
Daily synchronized metrics across token pricing, prompt cache economics, latency, throughput, and 5 capability benchmarks.
Metric / Dimension
GPT-4o Mini
OpenAI o3
Net Delta / Advantage
Input Cost / 1M Tokens
$0.15
$2.00
GPT-4o Mini is 13.3x cheaper
Output Cost / 1M Tokens
$0.60
$8.00
GPT-4o Mini (92.5% lower)
Prompt Cache Read / 1M
$0.075
$0.500
GPT-4o Mini is 6.7x cheaper
Prompt Cache Write / 1M
$0.15
$2.00
GPT-4o Mini is 13.3x cheaper
Context Window (Max Output)
131k (16k out)
205k (100k out)
OpenAI o3 (1.6x larger context)
Avg TTFT Response Latency
220ms
1150ms
GPT-4o Mini (930ms faster)
Generation Speed (Throughput)
140 tok/s
82 tok/s
GPT-4o Mini (+58 tok/s faster)
SWE-bench Verified (Coding)
41%
71.7%
OpenAI o3 (+30.7% lead)
GPQA Diamond (PhD STEM)
40.2%
87.7%
OpenAI o3 (+47.5% lead)
MMLU-Pro (Multi-Discipline)
68%
89.8%
OpenAI o3 (+21.8% lead)
MATH-500 (Quantitative Logic)
70.2%
98.6%
OpenAI o3 (+28.4% lead)
Inference Value Score (IVR)
67.2 / 100
60.6 / 100
GPT-4o Mini (+6.6 pts)
Interactive Monthly Token Economics & ROI Forecaster
Model production workloads across prompt, completion, and cached context tokens, or switch models on the fly.
GPT-4o Mini is cheaper at $0.15/1M input tokens ($0.60/1M output) compared to $2.00/1M input ($8.00/1M output) for OpenAI o3.
Which model has lower TTFT latency and higher tok/s throughput: GPT-4o Mini or OpenAI o3?
GPT-4o Mini delivers faster first-token latency at 220ms TTFT (140 tok/s throughput) compared to 1150ms TTFT (82 tok/s) for OpenAI o3.
How do GPT-4o Mini and OpenAI o3 compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, GPT-4o Mini scores 41% versus 71.7% for OpenAI o3. On GPQA Diamond graduate-level STEM reasoning, GPT-4o Mini scores 40.2% versus 87.7% for OpenAI o3 (and 70.2% vs 98.6% on MATH-500).
When should you choose GPT-4o Mini?
Choose GPT-4o Mini (OpenAI) for high-volume classification, lightweight RAG chatbots, and structured JSON extraction — offering a 131k context window, 220ms TTFT, and $0.15/1M input pricing ($0.075/1M cached reads).
When should you choose OpenAI o3?
Choose OpenAI o3 (OpenAI) for algorithmic synthesis, mathematical verification, PhD-level scientific research, and multi-step tool planning — offering a 204k context window, 1150ms TTFT, and $2.00/1M input pricing ($0.500/1M cached reads).
