Alternatives · 2026
Best Not Diamond Alternatives in 2026
24 alternatives · 21 with a free plan · Updated
What are the best Not Diamond alternatives?
The best Not Diamond alternatives for AI API in 2026 are LLM Gateway (open source API gateway, free), Klu (platform for building, freemium) and GPUX (serverless GPU platform, free). 21 of the 24 listed alternatives have a free or freemium plan.
Looking for something other than Not Diamond? Below are 24 alternatives in AI API, AI Developer Tools and AI Models, all closely matched, ranked by how much they overlap with Not Diamond. Not Diamond itself is free. Each entry shows what the tool does, what it shares with Not Diamond, its key features and pricing.
What is Not Diamond?
As AI model routers go, Not Diamond is distinctive because it builds routing logic from your own evaluation data instead of a fixed rule set. Not Diamond is an AI model router that decides which large language model should handle each query, with the goal of better accuracy at lower cost.
Not Diamond alternatives compared
| Tool | Pricing | Shared with Not Diamond | Match |
|---|---|---|---|
| Not Diamond | Free | — | Original |
| LLM Gateway | Free | AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Open Source AI Models, Other | Strong match |
| Klu | Freemium | AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Open Source AI Models, Prompt Engineering, Other | Strong match |
| GPUX | Free | AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Other | Strong match |
| Cerebrium | Free | AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Other | Strong match |
| Crosshatch | Free | AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Other | Strong match |
Top 24 alternatives to Not Diamond
- #1
LLM Gateway is an open source API gateway that routes, manages, and tracks costs of requests to many large language model providers.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Open Source AI Models, Other
- Fully open source under an MIT license
- Unified API compatible with OpenAI format for easy migration
- Supports a wide range of LLM providers
Pricing: free
- #2
Klu is a platform for building, deploying, and optimizing generative AI apps, with LLM access, RAG, evaluations, and fine-tuning.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Open Source AI Models, Prompt Engineering, Other
- Scale Designed for small projects and teams optimizing features
Pricing: free plan, paid plans from $30
- #3
Serverless GPU platform that runs Dockerized apps and AI model inference with autoscaling, for teams that want lower GPU hosting costs.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Other
- They also offer private model deployment for other organizations
Pricing: free
- #4
Cerebrium is a serverless AI infrastructure platform for building, deploying, and scaling AI applications and models with lower compute costs.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Other
- Serverless AI infrastructure platform for building
Pricing: free
- #5
Personalization API that gives apps real-time user context, with data shared based on user consent, for developers building tailored experiences.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Other
- Enables hyper-personalized applications
- Provides real-time user context
- Offers secure data sharing with user consent
Pricing: free
- #6
Together AI is a cloud platform for running, fine-tuning, and training open source large language models on NVIDIA GPUs.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Open Source AI Models, Other
- Batch inference is available at an introductory 50% discount
- Supports various NVIDIA GPUs like RTX-6000
- A100
Pricing: free plan, paid plans from $0.06
- #7
MakeHub is an AI API load balancer that routes calls across model providers to cut costs and add failover protection.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Other
- Significant cost reduction (up to 50%) on AI API calls
- Improved response speed (up to 2x faster)
- High reliability and uptime (99.99%) with consistent response times
Pricing: free
- #8
Reka builds multimodal AI models and agents that handle text, image, audio, and video for visual understanding and search.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Open Source AI Models, Other
- Offers comprehensive multimodal AI solutions (text
- Provides agentic capabilities for deep understanding and search
- Key research components are open-sourced for transparency and community building
Pricing: custom quote
- #9
Open-source LLM router for OpenClaw that sends each query to the most cost-effective model based on task complexity, cutting token costs.
In common with Not Diamond: AI API, AI Developer Tools, Large Language Models (LLMs), Open Source AI Models, Other
Pricing: free
- #10
Portkey is an AI gateway and observability platform that helps developers monitor, route, and control calls to large language model apps.
In common with Not Diamond: AI API, AI Developer Tools, Large Language Models (LLMs), Prompt Engineering, Other
- It also provides an MCP client to build AI agents with access to real-world tools
Pricing: free
- #11B
BreveAI offers a large language model API that emphasizes open-source adoption, with tools for prompt engineering, RAG, fine-tuning and deployment.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Prompt Engineering, Other
- It emphasizes open-source adoption with an easy API
Pricing: free
- #12
Cloud GPU rental and serverless AI inference service for running and scaling machine learning models at lower hourly cost.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Other
Pricing: free plan, paid plans from $2.49
- #13
CodingPlanX is an AI gateway that gives developers one API key for 600+ large language models from multiple providers.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Other
- A unified AI gateway providing access to 600+ models with one API key
Pricing: custom quote
- #14
Ottic is a testing and evaluation tool for LLM applications that helps QA and engineering teams check app behavior before product releases.
In common with Not Diamond: AI API, AI Developer Tools, Large Language Models (LLMs), Prompt Engineering, Other
- Reduces time to market for LLM applications
- Facilitates collaboration between technical and non-technical teams
- Provides comprehensive test coverage and visibility into LLM app behavior
Pricing: custom quote
- #15
AiHubMix is an LLM API router that gives developers one OpenAI-compatible API for calling models from OpenAI, Gemini, Claude, DeepSeek and more.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Other
- It aims to simplify AI model integration and make develop
Pricing: free
- #16
LiteLLM is an open source LLM gateway that lets developers call over 100 large language models through one OpenAI-format API and track spend.
In common with Not Diamond: AI API, AI Developer Tools, Large Language Models (LLMs), Open Source AI Models, Other
Pricing: free
- #17
Developers use Novita AI as a cloud platform with model APIs for AI image generation, plus GPU instances and serverless GPUs for running AI workloads.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Open Source AI Models, Other
- GPU instances
Pricing: free
- #18
Shaped is a search and recommendation platform for ML engineers building ranking models and personalized results with real-time learning.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Other
- Unified search and recommendations system
- AI-native foundation with transformer models and real-time learning loops
- Designed for ML engineers with full control and extensibility
Pricing: free
- #19
Everyprompt is a GPT-3 playground for prompt engineering, testing newest language models, and deploying AI-driven APIs.
In common with Not Diamond: AI API, AI Developer Tools, Large Language Models (LLMs), Prompt Engineering, Other
Pricing: free
- #20
Single API gateway that routes requests across 200+ AI models for text, image and video generation, with unified billing.
In common with Not Diamond: AI API, AI Developer Tools, Large Language Models (LLMs), Other
- Unified API gateway for 200+ AI models with smart routing and unified billing
Pricing: free
- #21
WizModel is a platform for deploying, scaling, and running machine learning models through a unified API for ML inference.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Large Language Models (LLMs), Open Source AI Models, Other
- It provides a unified API for ML inference
Pricing: free
- #22
Access 200+ AI models through one API at 80% lower cost than OpenAI, with built-in compatibility.
In common with Not Diamond: AI API, AI Developer Tools, AI Models, Other
- Single API access to 200+ AI models
Pricing: free
- #23
Python framework for building multi-step LLM workflows, with prompt testing, comparison and version control for developers.
In common with Not Diamond: AI API, AI Developer Tools, Large Language Models (LLMs), Prompt Engineering, Other
Pricing: free
- #24
Superpowered AI is a knowledge retrieval tool that lets you upload files, query them, and feed results into an LLM prompt via API or no-code interface.
In common with Not Diamond: AI API, AI Developer Tools, Large Language Models (LLMs), Other
- Simply upload your files
Pricing: free
How we picked these Not Diamond alternatives
We rank tools by how closely they match Not Diamond: tools that share more of its categories rank first, then tools whose main category, tags and description overlap with it, then community votes and views. Pricing type and features come from each product's SoftwareVital listing. Admins can pin or remove tools from this list.
Frequently asked questions
What are the best alternatives to Not Diamond in 2026?
The closest alternatives to Not Diamond are LLM Gateway, Klu, GPUX, Cerebrium and Crosshatch. They are ranked by how many categories and tags they share with Not Diamond and how similar their descriptions are, then by community votes and views on SoftwareVital.
What is the closest alternative to Not Diamond?
LLM Gateway is the closest match because it shares AI API, AI Developer Tools and AI Models with Not Diamond. It is free.
Are there free alternatives to Not Diamond?
Yes. 21 of the 24 alternatives have a free or freemium plan, including LLM Gateway (free), Klu (freemium), GPUX (free), Cerebrium (free) and Crosshatch (free). Not Diamond is free.
Which Not Diamond alternatives are paid or enterprise tools?
Reka (enterprise), CodingPlanX (enterprise) and Ottic (enterprise) use paid or enterprise pricing, which usually means more support and admin options for teams.
How does Not Diamond compare to LLM Gateway?
LLM Gateway overlaps with Not Diamond in AI API, AI Developer Tools and AI Models. Its listed features include fully open source under an MIT license, unified API compatible with OpenAI format for easy migration and supports a wide range of LLM providers. Pricing: free. Open the side-by-side compare page for a full breakdown.
What category is Not Diamond in?
Not Diamond is listed under AI API on SoftwareVital. Browse that category to see more tools in the same group.