OpenAI model
o3
o3 is a OpenAI model tracked in Sim. It supports a 200k token context window. Pricing starts at $2/1M input tokens and $8/1M output tokens. Key capabilities include Tool choice, Structured outputs, Reasoning low, medium, high. Best for reasoning-heavy tasks that need more deliberate model control.
Input price$2/1M
Cached input$0.5/1M
Output price$8/1M
Context window200k
Max output100k tokens
ProviderOpenAI
UpdatedApr 1, 2026
Best forBest for reasoning-heavy tasks that need more deliberate model control.
TemperatureNot configurable
Reasoning effortlow, medium, high
VerbosityNot supported
Thinking levelsNot supported
Structured outputsSupported
Tool choiceSupported
Computer useNot supported
Deep researchNot supported
Memory supportSupported
Max output tokens100k
Frequently asked questions
o3 is a OpenAI model available in Sim. o3 is a OpenAI model tracked in Sim. It supports a 200k token context window. Pricing starts at $2/1M input tokens and $8/1M output tokens. Key capabilities include Tool choice, Structured outputs, Reasoning low, medium, high.