Skip to contentGPT-5 Pro
LegacyVerified ·
The maximum-effort variant of the original GPT-5, now legacy; trades latency for the highest accuracy of the first GPT-5 generation.
profile normalized against the 47-model field
Context window· 400K of 1.05M38%
Max output· 272K of 272K100%
Output speed· 45 tok/s14%
Affordability· $120.00 / Mtok out33%
Capability breadth· 7 of 1164%
Capability switches · 7 of 11
Reasoning mode
Tool / function use
Streaming
JSON mode
Structured outputs
Prompt caching
Fine-tuning
Web search
Code execution
Vision input
Audio input
Specifications
Every value carries a primary source and a verification date.
Pricing
Input $/Mtok$15.00 / Mtok USD/Mtok
Output $/Mtok$120.00 / Mtok USD/Mtok
Performance
Output speed45 tok/s tok/s
Time to first token1,400 ms ms
Capabilities
Input modalitiesText, image
Tool / function usetrue
Structured outputstrue
General
Knowledge cutoffSeptember 30, 2024
Benchmarks
Sourced evaluation scores, each verified against its primary source.
GPQA Diamond
GPQA Diamond: 89.6%
SWE-bench Verified
SWE-bench Verified: 78.4%
AIME 2025
AIME 2025: 96.5%
Humanity's Last Exam (with tools)
Humanity's Last Exam (with tools): 42.1%
LiveCodeBench
LiveCodeBench: 81.3%