GPT-4o and GPT-5 share identical input pricing at $2.50 per 1M tokens ($10.00 vs. $10.00 output). In terms of operational performance, GPT-4o delivers lower response latency at 280ms TTFT (60ms faster than GPT-5) with 100 vs. 105 tok/s throughput. GPT-5 leads coding evaluations at 74.9% SWE-bench Verified vs. 48.0% for GPT-4o and 85.4% 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
GPT-5
Net Delta / Advantage
Input Cost / 1M Tokens
$2.50
$2.50
Identical Pricing
Output Cost / 1M Tokens
$10.00
$10.00
Identical Output Pricing
Prompt Cache Read / 1M
$1.250
$0.625
GPT-5 is 2.0x cheaper
Prompt Cache Write / 1M
$2.50
$2.50
Identical Cache Write Pricing
Context Window (Max Output)
131k (16k out)
410k (128k out)
GPT-5 (3.1x larger context)
Avg TTFT Response Latency
280ms
340ms
GPT-4o (60ms faster)
Generation Speed (Throughput)
100 tok/s
105 tok/s
GPT-5 (+5 tok/s faster)
SWE-bench Verified (Coding)
48%
74.9%
GPT-5 (+26.9% lead)
GPQA Diamond (PhD STEM)
53.6%
85.4%
GPT-5 (+31.8% lead)
MMLU-Pro (Multi-Discipline)
75.9%
90.8%
GPT-5 (+14.9% lead)
MATH-500 (Quantitative Logic)
76.6%
98%
GPT-5 (+21.4% lead)
Inference Value Score (IVR)
47.6 / 100
59.2 / 100
GPT-5 (+11.6 pts)
Interactive Monthly Token Economics & ROI Forecaster
Model production workloads across prompt, completion, and cached context tokens, or switch models on the fly.
Both GPT-4o and GPT-5 share identical input pricing at $2.50/1M tokens.
Which model has lower TTFT latency and higher tok/s throughput: GPT-4o or GPT-5?
GPT-4o delivers faster first-token latency at 280ms TTFT (100 tok/s throughput) compared to 340ms TTFT (105 tok/s) for GPT-5.
How do GPT-4o and GPT-5 compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, GPT-4o scores 48% versus 74.9% for GPT-5. On GPQA Diamond graduate-level STEM reasoning, GPT-4o scores 53.6% versus 85.4% for GPT-5 (and 76.6% vs 98% 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 GPT-5?
Choose GPT-5 (OpenAI) for complex enterprise automation, full-stack software engineering, multimodal agent orchestration, and scientific synthesis — offering a 409k context window, 340ms TTFT, and $2.50/1M input pricing ($0.625/1M cached reads).
