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Models
Spec
OpenAI
GPT-5
Verified 2026-04-15
DescriptionOpenAI's flagship multimodal reasoning model with adaptive thinking depth.
Released2025-08-07
Knowledge cutoff2024-09
Context window400K
Max output128K
Input $/1M$1.25
Output $/1M$10.00
Speed tierStandard
Reasoning5/5
Coding5/5
Multilingual5/5
Modalities in
Text
Vision
Modalities out
Text
Tool useYes
JSON modeYes
Open weightsNo
Best use cases
Reasoning
Coding
Agents
Long Context
Structured Output
Creative
Best personas
Enterprise
Developer Tools
Research
Creative Pro
Weak at
  • · ultra-low-latency chat
  • · on-device deployment
Compliance
HIPAA-eligibleSOC 2GDPRISO 27001FedRAMPHIPAA via signed BAA on Enterprise/API tiers.
Data policyAPI inputs/outputs are not used to train OpenAI models by default.
Sources
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