canonical_slug
"openai/gpt-5.5-20260423"
context_window
1050000
max_completion_tokens
128000
modalities
{
"input_modalities": [
"file",
"image",
"text"
],
"output_modalities": [
"text"
]
}rate
{
"prompt": "0.000005",
"overrides": [
{
"prompt": "0.00001",
"completion": "0.000045",
"input_cache_read": "0.000001",
"min_prompt_tokens": 272000
}
],
"completion": "0.00003",
"web_search": "0.01",
"input_cache_read": "0.0000005"
}supported_parameters
[ "include_reasoning", "max_completion_tokens", "max_tokens", "reasoning", "reasoning_effort", "response_format", "seed", "structured_outputs", "tool_choice", "tools" ]