The future is

multi-model

Improve accuracy and accelerate development with
automatic prompt adaptation and intelligent model routing
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For developers at the frontier

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Achieve SOTA on every benchmark

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By leveraging the best model for every query, Not Diamond helps you outperform every individual LLM on accuracy by up to 25% while reducing costs up to 10x.

Intelligent multi-model infrastructure

Make the most of every model  with relentless precision and speed.
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Automatic prompt adaptation
Take a prompt written for one model and automatically adapt it to any other model, outperforming manual prompt engineering in a fraction of the time.
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GPT-5
Summarize this text
Claude 4.5 Sonnet
Distill the essence of this document
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Breathtakingly fast
Outperform days of manual prompt engineering in under 30 minutes of background processing.
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ddddFarthest star in th()s1xn
Farthest star in the universe
Write an essay
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Steerable tradeoffs
Make use of faster and cheaper models without compromising output quality.
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Quality Threshold
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$0.003
$0.72
Intelligent model routing
Not Diamond leverages your evaluation data to predictively determine when to use which model—outperforming every individual model on accuracy at a lower cost and latency.
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Input
Model 1
Model 2
Model 3
Plan a trip itinerary for Niue...
0.98
0.89
0.95
Write a merge sort in python...
0.83
0.95
1.00
Analyze this technical report...
0.93
0.47
0.81
Write a blog post about LDA...
0.56
0.96
0.79
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Intelligent model routing
Not Diamond leverages your evaluation data to predictively determine when to use which model—outperforming every individual model on accuracy at a lower cost and latency.
Image
Input
Model 1
Model 2
Model 3
Plan a trip itinerary for Niue...
0.98
0.89
0.95
Write a merge sort in python...
0.83
0.95
1.00
Analyze this technical report...
0.93
0.47
0.81
Write a blog post about LDA...
0.56
0.96
0.79
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Breathtakingly fast
Select the right model in 60ms—less time than it takes to stream a single token.
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ddddFarthest star in th()s1xn
Farthest star in the universe
Write an essay
ImageImage
ImageImage
ImageImage
Image
Steerable tradeoffs
Make use of faster and cheaper models without compromising output quality.
Image
Quality Threshold
Image
$0.003
$0.72
Image
Automatic prompt adaptation
Take a prompt written for one model and automatically adapt it to any other model, outperforming manual prompt engineering in a fraction of the time.
Image
GPT-4o
Summarize this text
Claude 3.5 Sonnet
Distill the essence of this document
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Enterprise-grade security

Not Diamond is SOC-2 compliant and supports client-side request execution,
zero data retention,  and VPC deployments for unparalleled security at every scale.
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Powering enterprise AI

“Choosing to work with Not Diamond has been one of the best decisions we’ve made. Our development cycles have been radically accelerated and we’ve seen huge jumps in output quality. Throughout it all, the Not Diamond team has been incredibly responsive anytime we need support.”

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Grant Miller
CEO and Co-founder, Replicated