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Models
Spec
OpenAI
o3
Verified 2026-04-15
DescriptionDeliberate reasoning model that thinks before answering. Strong at math and science.
Released2025-04-16
Knowledge cutoff2024-06
Context window200K
Max output100K
Input $/1M$2.00
Output $/1M$8.00
Speed tierSlow
Reasoning5/5
Coding5/5
Multilingual4/5
Modalities in
Text
Vision
Modalities out
Text
Tool useYes
JSON modeYes
Open weightsNo
Best use cases
Reasoning
Coding
Agents
Best personas
Research
Enterprise
Developer Tools
Weak at
  • · latency-sensitive UX
  • · casual chat (overthinks)
Compliance
HIPAA-eligibleSOC 2GDPRISO 27001FedRAMP
Data policy
Sources
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