Skip to contentGPT-5.4
CurrentStale ·
Prior-generation GPT-5 reasoning model offering a ~1M-token context window at lower cost than GPT-5.5.
profile normalized against the 47-model field
Context window· 1.05M of 1.05M100%
Max output· 128K of 272K47%
Affordability· $15.00 / Mtok out92%
Capability breadth· 2 of 1118%
Capability switches · 2 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$2.50 / Mtok
Output $/Mtok$15.00 / Mtok
Capabilities
Input modalitiesText, image
Tool / function useYes
Vision inputImage — Input only
General
Knowledge cutoffAugust 31, 2025
Benchmarks
Sourced evaluation scores, each verified against its primary source.
SWE-bench Pro
GPT-5.4 SWE-bench Pro: 57.7%
GPQA Diamond
GPT-5.4: 0.928
Humanity's Last Exam (with tools)
GPT-5.4: 0.398 (39.8%)