OpenAI BelOpenAI
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WhichModelWhichModel.io
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About
OpenAI Bel is the reported codename of an unreleased artificial intelligence foundation model associated with OpenAI. Unofficial reports describe it as a large-scale pretraining project intended to support future generations of AI models. The project has been linked in speculative reporting to OpenAI's Astra model family and potential successors to GPT-6. Some sources claim that Bel contains more than 10 trillion parameters, although this figure has not been independently verified. OpenAI has not published official technical specifications, benchmark results, or documentation confirming the project's capabilities. Bel is not currently available as a publicly documented model through ChatGPT or the OpenAI API.
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About
WhichModel is a next-generation AI benchmarking platform designed to help developers and businesses compare and optimize AI models for their specific tasks. It allows users to benchmark over 50 AI models side by side using real-time testing with custom inputs and parameters. The platform offers prompt optimization tools to identify the best-performing prompts across multiple models. Users can track model and prompt performance continuously to make informed, data-driven decisions. WhichModel supports major AI providers including OpenAI, Anthropic, Google, and popular open-source models. With pay-as-you-go credit packages and 24/7 support, it offers flexible and scalable access to AI benchmarking without subscription commitments.
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Platforms Supported
Windows
Not Supported
Mac
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Linux
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Cloud
Supported
On-Premises
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iPhone
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iPad
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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
AI researchers, machine learning engineers, software developers, enterprise AI teams, and organizations evaluating advanced language models
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Audience
WhichModel is ideal for AI developers, data scientists, and businesses seeking a comprehensive and flexible platform to benchmark, compare, and optimize AI models for their specific use cases
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Support
Phone Support
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24/7 Live Support
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Online
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Support
Phone Support
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24/7 Live Support
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Online
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API
Offers API
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API
Offers API
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Screenshots and VideosNo images available
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Screenshots and VideosNo images available
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Pricing
No information available.
Free Version
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Free Trial
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Pricing
$10
Free Version
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Free Trial
Supported
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Reviews/
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Reviews/
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Training
Documentation
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Webinars
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Live Online
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In Person
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Training
Documentation
Supported
Webinars
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Live Online
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Company InformationOpenAI
Founded: 2015
United States
openai.com
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Company InformationWhichModel.io
Founded: 2025
United States
www.whichmodel.io
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Integrations
Agentforce Vibes
Supported
Amazon Bedrock
Supported
C
Supported
C#
Supported
C++
Supported
GPT-5.1-Codex
Supported
GPT-5.5 Thinking
Supported
GPT‑5.4‑Cyber
Supported
Go
Supported
HTML
Supported
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Integrations
Agentforce Vibes
Not Supported
Amazon Bedrock
Not Supported
C
Not Supported
C#
Not Supported
C++
Not Supported
GPT-5.1-Codex
Not Supported
GPT-5.5 Thinking
Not Supported
GPT‑5.4‑Cyber
Not Supported
Go
Not Supported
HTML
Not Supported
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