GPT-5 Search API
JSON →A GPT-5 variant designed for search and retrieval-augmented generation tasks via API.
Specs
context window 272K tokens
max output 128K tokens
input price $1.25 / 1M tokens
output price $10 / 1M tokens
Capabilities
tool-usejson-modestreamingfunction-callingvisionprompt-caching
API
full doc /v1/models/gpt-5-search-api