GPT-6.1 SolOpenAI
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Step 5 PreviewStepFun
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Related Products
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About
GPT-6.1 Sol is an OpenAI model designed to deliver near-GPT-6 Astra intelligence at substantially lower cost across coding, professional work, computer use, scientific research, and agentic workflows. It improves on GPT-6 Sol across complex tasks such as software engineering, document analysis, multi-step business automation, and computer interaction. On DeepSWE v1.1, GPT-6.1 Sol matches GPT-6 Astra at roughly one-fifth of the cost while exceeding GPT-6 Sol's best score by 6.4 percentage points at a lower reasoning effort. The model also improves computer use, outperforming GPT-6 Sol by seven percentage points on the OSWorld 2.0 offline set at maximum reasoning effort while costing less than half as much per task. GPT-6.1 Sol provides improved factuality and alignment, including greater transparency about limitations and stronger adherence to user instructions during agentic tasks. It is available through ChatGPT Work, Codex, and the OpenAI API.
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About
Step 5 Preview is StepFun’s flagship model for agentic work, designed for real-world tasks across software engineering and professional knowledge work, with particular strength in finance. It natively supports text, image, and video input and provides a 1M-token context window, enabling tasks that require large amounts of information, tool calls, and continuous progress toward a deliverable. The model can analyze long documents, multiple source materials, and conversation history for cross-document question answering and research organization. For programming and software engineering, it works across multiple languages and can support troubleshooting, code changes, verification, and test creation. Its multi-step agent capabilities let applications provide tools for retrieving information, processing documents, conducting deep research, and producing analytical reports. Multimodal understanding combines images, video, and text for chart analysis, screenshot question answering, etc.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Software developers, engineers, researchers, enterprises, AI application builders, professional knowledge workers, and agent developers that need advanced coding, reasoning, computer-use, scientific, document-analysis, and business-automation capabilities
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Audience
Developers, engineering teams, and knowledge-work organizations wanting to build multimodal AI agents for coding, research, analysis, and other complex multi-step tasks
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Supported
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API
Offers API
Supported
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
$2 per 1M tokens (input)
Input: $2 per 1 million tokens
Output: $10 per 1 million tokens Cached Input: $0.10 per 1 million cached input tokens
Free Version
Not Supported
Free Trial
Not Supported
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Pricing
$0.04 per input
Free Version
Not Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Pros & Cons from Real UsersPros
Cons
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationOpenAI
Founded: 2015
United States
openai.com
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Company InformationStepFun
Founded: 2023
United States
platform.stepfun.ai/docs/en/guides/models/step-5-preview
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Alternatives |
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Categories |
Categories |
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Integrations
Hermes Agent
Supported
OpenClaw
Supported
Python
Supported
Amazon Bedrock
Supported
Amp
Supported
CSS
Supported
Cursor
Supported
Devin Desktop
Supported
GPT-5.5 Thinking
Supported
Ghost
Supported
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Integrations
Hermes Agent
Supported
OpenClaw
Supported
Python
Supported
Amazon Bedrock
Not Supported
Amp
Not Supported
CSS
Not Supported
Cursor
Not Supported
Devin Desktop
Not Supported
GPT-5.5 Thinking
Not Supported
Ghost
Not Supported
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