GPT-6.1 Sol Overview

Name: GPT-6.1 Sol
Brand: GPT-6.1 Sol

GPT-6.1 Sol is a Large Language Models (LLMs) tool. AI model for coding, computer use, and professional work at lower cost than Astra. Key features include Near-Astra Performance at Lower Cost, Advanced Coding Capabilities, and Large Context Window. Best for software developers and engineers, data scientists and analysts and business consultants.

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About GPT-6.1 Sol

GPT-6.1 Sol is OpenAI's mid-tier reasoning model that delivers near-Astra performance on coding, computer use, and professional tasks at one-fifth the cost. It features a 1.05M-token context window and improved factual accuracy.

Key Features

Near-Astra Performance at Lower Cost.

GPT-6.1 Sol matches GPT-6 Astra on complex coding and professional tasks while costing one-fifth as much for standard API tokens. This makes frontier intelligence accessible for production workloads.

Advanced Coding Capabilities.

The model matches Astra on DeepSWE software engineering benchmarks and scores higher than Claude Opus 5.5 on multi-step business workflows. It handles complex refactors and deep codebase investigations.

Large Context Window.

GPT-6.1 Sol supports a 1.05 million-token context window with up to 128,000 output tokens. This allows processing of large documents and sustained agent tasks.

Improved Factual Accuracy.

Factual errors drop from 11.4% to 7.7% at low reasoning effort compared to GPT-6 Sol. The model stays within 1.9% of Astra's error rate across all reasoning settings.

Computer Use and Automation.

The model scores 7% higher than GPT-6 Sol on computer-use tasks and handles autonomous desktop agents effectively. It's built for long-running agents across applications.

Configurable Reasoning Effort.

GPT-6.1 Sol supports five reasoning levels from low to max, letting you balance quality and cost. Cached input costs just $0.10 per million tokens, 50% less than GPT-6 Sol.

Frequently Asked Questions

GPT-6.1 Sol costs $2 per million input tokens and $10 per million output tokens for standard API requests. Cached input is $0.10 per million tokens, which is 95% less than standard input pricing and 50% less than GPT-6 Sol's cached rate.

GPT-6.1 Sol works best for complex coding tasks, computer use automation, professional document analysis, and multi-step business workflows. It's designed for production workloads where you need near-flagship performance at a lower cost.

GPT-6.1 Sol nearly matches Astra on coding and professional work benchmarks while costing one-fifth as much. It matches Astra on software engineering tasks and comes within 2.1 points on computer-use evaluations, making it a cost-effective alternative for most work.

GPT-6.1 Sol is available to Plus, Pro, Business, Enterprise, and Edu users in ChatGPT Work and Codex. Developers can access it through the OpenAI API using the model name gpt-6.1-sol. It's not yet available in regular ChatGPT conversations.