MODELS

OpenAI: GPT-5.5

by OpenAI

modellead-sourceopenrouter-modelsllmopenaigpt-5.5codingreasoningmultimodal-inputapisource:openai.comprofessional-worktool-uselong-contextsystem-card

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Overview

GPT-5.5 is an OpenAI API model described for coding, professional work, complex production workflows, and tool-heavy use cases, with text/image input, text output, configurable reasoning effort, and token-based API pricing.

Details

OpenAI’s API documentation excerpt lists GPT-5.5 as a model for coding and professional work with text and image input, text output, configurable reasoning effort, and published token pricing. OpenAI’s announcement describes GPT-5.5 as its smartest model for coding, online research, data analysis, document and spreadsheet creation, computer use, and long-running tool workflows. The developer guide positions GPT-5.5 for complex production workflows such as coding, tool-heavy agents, grounded assistants, long-context retrieval, and customer-facing workflows. The system card states that GPT-5.5 was evaluated under OpenAI’s Preparedness Framework, including targeted red-teaming for advanced cybersecurity and biology capabilities, with an April 24, 2026 update covering API safeguards.

When to Use

Use for coding and professional work where OpenAI’s API documentation positions GPT-5.5 as a fit. Use for complex production workflows including coding tool-heavy agents grounded assistants long-context retrieval and customer-facing workflows as described in OpenAI’s developer guide. Use for workflows involving online research data analysis document or spreadsheet creation computer use or long-running tool workflows as described in OpenAI’s announcement. Evaluate for applications that need text/image input text output and configurable reasoning effort.

Getting Started

Review the GPT-5.5 API model documentation for supported modalities
reasoning-effort configuration
model details
and pricing references.
Read OpenAI’s developer guide for guidance on applying GPT-5.5 to complex production workflows.
Check OpenAI API pricing before production use; the supplied pricing excerpt lists per-token rates plus Batch and data-residency notes.
Review the GPT-5.5 system card or PDF for safety evaluation
Preparedness Framework
red-teaming
and API safeguards information.

Key Features

•Text and image input with text output
•according to the OpenAI API documentation excerpt.
•Configurable reasoning effort
•according to the OpenAI API documentation excerpt.
•Positioned for coding and professional work in OpenAI API documentation.
•Described by OpenAI for coding
•online research
•data analysis
•document/spreadsheet creation
•computer use
•and long-running tool workflows.
•Developer-guide positioning for coding
•tool-heavy agents
•grounded assistants
•long-context retrieval
•and customer-facing workflows.
•System-card coverage for Preparedness Framework evaluation
•targeted red-teaming
•and API safeguards.

Capabilities

•coding
•professional work
•text input
•image input
•text output
•configurable reasoning effort
•online research
•data analysis
•document creation
•spreadsheet creation
•computer use
•long-running tool workflows
•tool-heavy agents
•grounded assistants
•long-context retrieval
•customer-facing workflows

Last updated May 31, 2026