We're excited to announce that GPT-5.1 is now available on our platform. As part of our commitment to transparency and giving you the best tools for your needs, we've conducted extensive benchmarking to help you understand when to use this new model versus our existing GPT-5 default.
Our team evaluated GPT-5.1 across three core functionalities that matter most to your daily workflows:
Web Search - Finding and synthesizing information from the internet
Upload & Ask - Analyzing documents you provide
Internal Search - Querying your organization's knowledge base
We compared GPT-5.1's performance against GPT-5 and other leading models across 250 real-world questions, measuring accuracy, speed, consistency, and professional tone.
When working with uploaded 10-Q and 10-K filings, and regulatory documents, GPT 5.1 delivers excellent performance:
More consistent quality with 39% lower variance in output scores
Comparable accuracy to GPT-5 with slightly improved overall scores (4.48 vs. 4.42 on a 5-point scale)
If you're regularly analyzing PDFs, reports, or other documents, GPT-5.1 may provide slight improvements.
GPT-5.1 shows speed improvements for web-based queries:
3.4 seconds faster on average than GPT-5
Similar accuracy and information quality
Comparable transparency in source citation
However, there are some tradeoffs considerations:
GPT-5.1 responses tend to be more verbose, sometimes repeating concepts
Occasionally includes conversational phrases like "Great question!" that may not fit formal contexts
Less predictable response times (higher variance)
GPT-5.1 is great for quick research tasks, but you may need to edit the output for formal presentations.
When searching your organization's internal knowledge base, GPT-5 continues to outperform:
GPT-5: 99% accuracy (140/141 correct) vs. GPT 5.1: 93% accuracy (131/141 correct)
GPT-5 delivers more concise, professionally-toned responses
GPT-5 better interprets nuanced questions
For critical business queries where accuracy is paramount, stick with GPT-5.
Based on our findings, we will maintain GPT 5 as our default model for most use cases. However, GPT 5.1 is now available for you to select when it better fits your needs.
Analyzing uploaded documents (PDFs, reports, presentations)
Quick web research where speed matters
Exploratory research and brainstorming
Tasks where conversational tone is acceptable
Searching internal company knowledge
Queries requiring maximum accuracy
Formal business communications
Complex questions requiring interpretation
When you need consistent, professional tone
At Unique AI, we believe in empowering you with choices backed by transparent data. While our testing shows GPT 5 remains the stronger all-purpose model, GPT 5.1 offers meaningful advantages for specific use cases, particularly document analysis.
By making GPT 5.1 available on our platform, we're giving you the flexibility to:
Optimize for speed in time to stream.
Experiment with different models for your unique workflows
Make informed decisions based on your specific requirements
We will continue refining our own system-level setup to improve performance of GPT-5.1, particularly through enhancements in areas like context engineering and overall system design. We are especially aiming for improvements in:
Internal search accuracy
Consistency in professional tone
Source citation reliability
As always, your feedback matters. If you discover use cases where GPT 5.1 particularly excels, or underperforms, please let us know through our feedback channels.
Our support team is here to help you choose the right model for your workflows. Contact you Customer Success contact or consult our documentation to switch models for your spaces.
GPT-5 remains your best default choice for accuracy and professional output. GPT-5.1 is now available as a specialized option for faster document processing and exploratory research. Choose the tool that fits your task, and enjoy the flexibility of having both at your fingertips.