All Models

GPT 5.5 (Fast)

gpt Reasoning Tool Calling Attachments Structured Output

Default frontier GPT for coding, computer use, research, and knowledge work

Providers 1
Released Apr 23, 2026
Input Modalities text, image, pdf
Output Modalities text
Tarsk Use coding

Available Providers (1)

Provider Model ID Input Cost Output Cost Context Max Output Docs
Vercel AI Gateway openai/gpt-5.5-fast $12.50/MTok $75/MTok 1M 128K

Capabilities

Reasoning
Tool Calling
Attachments
Open Weights
Structured Output