Text Generation Model
GPT 5.5
OpenAI's most capable and efficient frontier model for professional work, combining powerful reasoning with reliable agentic execution at scale.
Publisher
OpenAI
Type Text
Context Window 1,000,000 tokens
Training Data April 2026
Input $5.00/MTok
Output $30.00/MTok
Overview
GPT 5.5
GPT-5.5 raises the baseline for complex production workflows. It’s a strong fit for coding use cases, tool-heavy agents, grounded assistants, long-context retrieval, product-spec-to-plan workflows, and customer-facing workflows where execution quality and response polish are critical.
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Documentation & links
Configuration
Parameters & options
Max Temperature 2
Max Response Size 128,000 tokens
Reasoning Effort Select
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