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OpenAI model

GPT-5 Pro

GPT-5 Pro is a OpenAI model tracked in Sim. It supports a 400k token context window. Pricing starts at $15/1M input tokens and $120/1M output tokens. Key capabilities include Tool choice, Structured outputs, Reasoning high. Best for reasoning-heavy tasks that need more deliberate model control.

Build with this modelAll OpenAI models
Input price$15/1M
Cached inputN/A
Output price$120/1M
Context window400k
Max output272k tokens
ProviderOpenAI
UpdatedJun 11, 2026
Best forBest for reasoning-heavy tasks that need more deliberate model control.
TemperatureNot configurable
Reasoning efforthigh
VerbosityNot supported
Thinking levelsNot supported
Structured outputsSupported
Tool choiceSupported
Computer useNot supported
Deep researchNot supported
Memory supportSupported
Max output tokens272k
OpenAI

GPT-5.5 Pro

GPT-5.5 Pro is a OpenAI model tracked in Sim. It supports a 1.05M token context window. Pricing starts at $30/1M input tokens and $180/1M output tokens. Key capabilities include Tool choice, Structured outputs, Reasoning medium, high, xhigh.

OpenAI

GPT-5.5

GPT-5.5 is a OpenAI model tracked in Sim. It supports a 1.05M token context window. Pricing starts at $5/1M input tokens and $30/1M output tokens. Key capabilities include Tool choice, Structured outputs, Reasoning none, low, medium, high, xhigh.

OpenAI

GPT-5.4 Pro

GPT-5.4 Pro is a OpenAI model tracked in Sim. It supports a 1.05M token context window. Pricing starts at $30/1M input tokens and $180/1M output tokens. Key capabilities include Tool choice, Structured outputs, Reasoning medium, high, xhigh.

Frequently asked questions

GPT-5 Pro is a OpenAI model available in Sim. GPT-5 Pro is a OpenAI model tracked in Sim. It supports a 400k token context window. Pricing starts at $15/1M input tokens and $120/1M output tokens. Key capabilities include Tool choice, Structured outputs, Reasoning high.

GPT-5 Pro is listed at $15/1M input tokens, and $120/1M output tokens.

GPT-5 Pro supports a context window of 400k tokens in Sim. In an agent, this determines how much conversation history, tool outputs, and retrieved documents the model can hold in a single call.

GPT-5 Pro supports the following capabilities in Sim: Tool choice, Structured outputs, Reasoning high, Max output 272k.

Best for reasoning-heavy tasks that need more deliberate model control. When used in a Sim workflow, it can be selected in any Agent block from the model picker.