OpenAI o3 is 20.0% cheaper for input tokens ($2.00 vs. $2.50 per 1M tokens) and $8.00 vs. $10.00 for output tokens (1.2x cost advantage). In terms of operational performance, GPT-4o delivers lower response latency at 280ms TTFT (870ms faster than OpenAI o3) with 100 vs. 82 tok/s throughput. OpenAI o3 leads coding evaluations at 71.7% SWE-bench Verified vs. 48.0% for GPT-4o and 87.7% vs. 53.6% 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
OpenAI o3
Net Delta / Advantage
Input Cost / 1M Tokens
$2.50
$2.00
OpenAI o3 is 1.3x cheaper
Output Cost / 1M Tokens
$10.00
$8.00
OpenAI o3 (20.0% lower)
Prompt Cache Read / 1M
$1.250
$0.500
OpenAI o3 is 2.5x cheaper
Prompt Cache Write / 1M
$2.50
$2.00
OpenAI o3 is 1.3x cheaper
Context Window (Max Output)
131k (16k out)
205k (100k out)
OpenAI o3 (1.6x larger context)
Avg TTFT Response Latency
280ms
1150ms
GPT-4o (870ms faster)
Generation Speed (Throughput)
100 tok/s
82 tok/s
GPT-4o (+18 tok/s faster)
SWE-bench Verified (Coding)
48%
71.7%
OpenAI o3 (+23.7% lead)
GPQA Diamond (PhD STEM)
53.6%
87.7%
OpenAI o3 (+34.1% lead)
MMLU-Pro (Multi-Discipline)
75.9%
89.8%
OpenAI o3 (+13.9% lead)
MATH-500 (Quantitative Logic)
76.6%
98.6%
OpenAI o3 (+22.0% lead)
Inference Value Score (IVR)
47.6 / 100
60.6 / 100
OpenAI o3 (+13 pts)
Interactive Monthly Token Economics & ROI Forecaster
Model production workloads across prompt, completion, and cached context tokens, or switch models on the fly.
OpenAI o3 is cheaper at $2.00/1M input tokens ($8.00/1M output) compared to $2.50/1M input ($10.00/1M output) for GPT-4o.
Which model has lower TTFT latency and higher tok/s throughput: GPT-4o or OpenAI o3?
GPT-4o delivers faster first-token latency at 280ms TTFT (100 tok/s throughput) compared to 1150ms TTFT (82 tok/s) for OpenAI o3.
How do GPT-4o and OpenAI o3 compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, GPT-4o scores 48% versus 71.7% for OpenAI o3. On GPQA Diamond graduate-level STEM reasoning, GPT-4o scores 53.6% versus 87.7% for OpenAI o3 (and 76.6% vs 98.6% on MATH-500).
When should you choose GPT-4o?
Choose GPT-4o (OpenAI) for general enterprise assistants, multimodal customer support, and structured JSON output pipelines — offering a 131k context window, 280ms TTFT, and $2.50/1M input pricing ($1.250/1M 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).
