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openai/gpt-5.2
The best model for coding and agentic tasks across industries
Capabilities
Cost
Community model (estimated from hardware time)
Input Parameters
| Name | Type | Description | Default | Constraints |
|---|---|---|---|---|
image_input | array | List of images to send to the model | | — |
max_completion_tokens | integer | Maximum number of completion tokens to generate. For higher reasoning efforts you may need to increase your max_completion_tokens to avoid empty responses (where all the tokens are used on reasoning). | — | — |
messages | array | A JSON string representing a list of messages. For example: [{"role": "user", "content": "Hello, how are you?"}]. If provided, prompt and system_prompt are ignored. | | — |
prompt | string | The prompt to send to the model. Do not use if using messages. | — | — |
reasoning_effort | string | Constrains effort on reasoning for GPT-5.2 models. Supported values are none, low, medium, high, and xhigh. | "low" | none low medium high xhigh |
system_prompt | string | System prompt to set the assistant's behavior | — | — |
verbosity | string | Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are low, medium, and high. GPT-5 supports this parameter to help control whether answers are short and to the point or long and comprehensive. | "medium" | low medium high |
image_input array List of images to send to the model
max_completion_tokens integer Maximum number of completion tokens to generate. For higher reasoning efforts you may need to increase your max_completion_tokens to avoid empty responses (where all the tokens are used on reasoning).
messages array A JSON string representing a list of messages. For example: [{"role": "user", "content": "Hello, how are you?"}]. If provided, prompt and system_prompt are ignored.
prompt string The prompt to send to the model. Do not use if using messages.
reasoning_effort string Constrains effort on reasoning for GPT-5.2 models. Supported values are none, low, medium, high, and xhigh.
"low" system_prompt string System prompt to set the assistant's behavior
verbosity string Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are low, medium, and high. GPT-5 supports this parameter to help control whether answers are short and to the point or long and comprehensive.
"medium" e805d0794e42 Updated: 2/26/2026 285.3K runs