Model•active

GPT-6 Sol

GPT-6 Sol is an OpenAI reasoning model for complex coding and agentic workflows, retained as the original Sol release alongside the newer GPT-6.1 Sol.

Official siteVerified Oct 6, 2026

Overview

The model has a 1.05M-token context window, accepts text and image input, and can return up to 128K output tokens. OpenAI now points users to GPT-6.1 Sol as the newer Sol model while continuing to document GPT-6 Sol as an available API model.

Model specifications

Family: GPT-6
Context: 1,050,000 tokens
Input: Text, Image
Output: Text
Open weights: No
Capabilities: Reasoning, Vision, Tool Use, Function Calling, Structured Output, Web Search, Code Execution, Computer Use, Image Generation

Related entities

Available Via

APIactive

OpenAI API

OpenAI API provides programmatic access to OpenAI models through the Responses API, Realtime API, batch processing, and other model and media endpoints.

Belongs To

Model Familyactive

GPT-6

GPT-6 is OpenAI's current frontier model family, represented in iilib by GPT-6 Astra, GPT-6.1 Sol, GPT-6 Sol, and GPT-6 Luna.

Related by Develops

Companyactive

OpenAI

OpenAI is an AI research and deployment company that develops model, developer, and coding products including the Codex product family.