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Description

GPT-6.1 Sol is an upgraded OpenAI model that combines advanced intelligence with lower operating costs for coding, professional knowledge work, computer use, scientific research, and autonomous agents. OpenAI positions it as offering near-GPT-6 Astra intelligence at one-fifth of Astra's standard input and output token prices. The model delivers substantial improvements over GPT-6 Sol in software engineering, complex document understanding, business automation, and long-horizon computer-use workflows. On DeepSWE v1.1, GPT-6.1 Sol matches GPT-6 Astra at approximately one-fifth of the cost and surpasses GPT-6 Sol's highest score by 6.4 percentage points at lower reasoning effort. On AutomationBench, it scores 4.8 percentage points higher than GPT-6 Sol at the same reasoning setting and 2.2 points above Opus 5.5 at medium reasoning effort. GPT-6.1 Sol also improves computer use, coming within 2.1 percentage points of GPT-6 Astra on the OSWorld 2.0 offline set at maximum reasoning effort while costing roughly one-seventh as much per task. For scientific workflows, the model more than doubles GPT-6 Sol's Terminal-Bench Science 0.1 score at maximum effort while reducing average task cost by more than half. Factuality has also improved, with the share of responses containing a factual error at low reasoning effort falling from 11.4% with GPT-6 Sol to 7.7% with GPT-6.1 Sol on OpenAI's difficult error-focused evaluation. Developers can access GPT-6.1 Sol through the OpenAI API for $2 per million input tokens, $0.10 per million cached input tokens, and $10 per million output tokens, while eligible users can access it through ChatGPT Work and Codex.

Description

OpenAI Bel is an unconfirmed artificial intelligence model reportedly associated with OpenAI's research into large-scale foundation models. The name has appeared in unofficial discussions describing a possible new generation of pretrained AI systems. Reports suggest that Bel may represent a successor to an earlier internal training effort referred to as Doug. Some accounts describe the project as a potential foundation for future models related to the Astra family and later GPT generations. Unverified claims place its parameter count above 10 trillion, although OpenAI has not disclosed any supporting architectural information. The model's training methodology, supported modalities, context window, and inference capabilities remain unknown. No official benchmark evaluations have established its performance in reasoning, coding, mathematics, or other AI tasks. OpenAI has not announced public access, API availability, pricing, or a release schedule for a model named Bel. The available information therefore characterizes Bel as a rumored research project rather than an established commercial AI product.

API Access

Has API Yes 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

No images available

Integrations

Agentforce Vibes Yes 
Amp Yes 
Azure OpenAI Service Yes 
C++ Yes 
ChatGPT Atlas Yes 
ChatGPT Enterprise Yes 
Claw Code Yes 
Dessix Yes 
Doraverse Yes 
GPT-5.1-Codex-Max Yes 
GPT-5.5-Cyber Yes 
GPT‑5.4‑Cyber Yes 
LobeHub Yes 
Lovable Yes 
Lua Yes 
Microsoft 365 Yes 
NextDocs Yes 
OpenAI Yes 
Rust Yes 
Use AI Yes 

Integrations

Agentforce Vibes Yes 
Amp Yes 
Azure OpenAI Service Yes 
C++ Yes 
ChatGPT Atlas Yes 
ChatGPT Enterprise Yes 
Claw Code Yes 
Dessix Yes 
Doraverse Yes 
GPT-5.1-Codex-Max Yes 
GPT-5.5-Cyber Yes 
GPT‑5.4‑Cyber Yes 
LobeHub Yes 
Lovable Yes 
Lua Yes 
Microsoft 365 Yes 
NextDocs Yes 
OpenAI Yes 
Rust Yes 
Use AI Yes 

Pricing Details

$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 Trial No 
Free Version No 

Pricing Details

No price information available.
Free Trial No 
Free Version No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs No 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

OpenAI

Founded

2015

Country

United States

Website

openai.com

Vendor Details

Company Name

OpenAI

Founded

2015

Country

United States

Website

openai.com

Alternatives

Alternatives

No Alternatives
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