Alternatives · 2026
Best OnAPI Alternatives in 2026
24 alternatives · 22 with a free plan · Updated
What are the best OnAPI alternatives?
The best OnAPI alternatives for AI Agent in 2026 are APIMart (unified AI API platform giving developers one key and…, free), Replicate (cloud API for running, freemium) and MiniMax (large language model company offering text, free). 22 of the 24 listed alternatives have a free or freemium plan.
Looking for something other than OnAPI? Below are 24 alternatives in AI Agent, AI API and AI Developer Tools, 23 of them closely matched, ranked by how much they overlap with OnAPI. OnAPI itself is free. Each entry shows what the tool does, what it shares with OnAPI, its key features and pricing.
What is OnAPI?
You point your existing OpenAI-style client at OnAPI, change the base_url, and send requests for text, images, video or code to GPT, Claude, Gemini, Sora, Veo or Banana with a single key. OnAPI is an AI model API gateway for developers, so one endpoint replaces separate accounts with each provider.
- Categories
- AI AgentAI APIAI Developer ToolsAI Image GeneratorAI ModelsAI Music GeneratorAI Text GeneratorAI Video GeneratorLarge Language Models (LLMs)
- Pricing
- Free
Key features of OnAPI
- Turn models into products
- Ship ideas
- Fully OpenAI-compatible
- Works out of the box with the OpenAI SDK
- LangChain
OnAPI alternatives compared
| Tool | Pricing | Shared with OnAPI | Match |
|---|---|---|---|
| OnAPI | Free | — | Original |
| APIMart | Free | AI API, AI Developer Tools, AI Image Generator, AI Models, AI Music Generator, AI Text Generator, AI Video Generator | Strong match |
| Replicate | Freemium | AI API, AI Developer Tools, AI Image Generator, AI Models, AI Music Generator, AI Text Generator, AI Video Generator | Strong match |
| MiniMax | Free | AI API, AI Image Generator, AI Models, AI Music Generator, AI Text Generator, AI Video Generator, Large Language Models (LLMs) | Strong match |
| AIverse | Free | AI API, AI Image Generator, AI Models, AI Music Generator, AI Text Generator, AI Video Generator, Large Language Models (LLMs) | Strong match |
| Modal | Free | AI API, AI Developer Tools, AI Image Generator, AI Models, AI Music Generator, AI Video Generator, Large Language Models (LLMs) | Strong match |
Top 24 alternatives to OnAPI
- #1
APIMart is a unified AI API platform giving developers one key and one interface for hundreds of text, image, video and music models.
In common with OnAPI: AI API, AI Developer Tools, AI Image Generator, AI Models, AI Music Generator, AI Text Generator, AI Video Generator
- Always On
Pricing: free, same as OnAPI
- #2
Cloud API for running, fine-tuning, and deploying open-source machine learning models, including image, video, and text generation models.
In common with OnAPI: AI API, AI Developer Tools, AI Image Generator, AI Models, AI Music Generator, AI Text Generator, AI Video Generator
- Text-to-image model with excellent image quality
Pricing: freemium (free plan + paid upgrades); OnAPI is free
- #3
MiniMax is a large language model company offering text, speech, and video generation AI models through an API for developers.
In common with OnAPI: AI API, AI Image Generator, AI Models, AI Music Generator, AI Text Generator, AI Video Generator, Large Language Models (LLMs)
- Their mission is to build a world where intelligence thrives with everyone
Pricing: free, same as OnAPI
- #4
AIverse is an all-in-one AI platform that gives you access to thousands of AI models for chat, image, audio, and video tasks.
In common with OnAPI: AI API, AI Image Generator, AI Models, AI Music Generator, AI Text Generator, AI Video Generator, Large Language Models (LLMs)
- All-in-one platform for accessing and using thousands of AI models
Pricing: free, same as OnAPI
- #5
Serverless cloud platform for running AI and data compute at scale, with GPU workloads, scheduled jobs and web endpoints.
In common with OnAPI: AI API, AI Developer Tools, AI Image Generator, AI Models, AI Music Generator, AI Video Generator, Large Language Models (LLMs)
- Serverless platform for AI and data teams to run compute at scale
Pricing: free, same as OnAPI
- #6
MiniMax is an AI company offering large language models plus text, speech, music, image and video generation tools for creators and developers.
In common with OnAPI: AI API, AI Image Generator, AI Models, AI Music Generator, AI Video Generator, Large Language Models (LLMs)
- Its mission is to build a world where intelligence thrives with everyone
Pricing: free, same as OnAPI
- #7
One API key and prepaid balance for 460+ text, image, and video AI models from OpenAI, Anthropic, Google and more.
In common with OnAPI: AI API, AI Developer Tools, AI Image Generator, AI Models, AI Video Generator, Large Language Models (LLMs)
Pricing: free, same as OnAPI
- #8F
Fifi.ai is a cloud-based AI image editing platform with background removal, upscaling, smart cropping and custom model hosting via API.
In common with OnAPI: AI API, AI Image Generator, AI Models, AI Music Generator, AI Text Generator, AI Video Generator, Large Language Models (LLMs)
- It offers seamless API integration
Pricing: free, same as OnAPI
- #9
Reka builds multimodal AI models and agents that handle text, image, audio, and video for visual understanding and search.
In common with OnAPI: AI Agent, AI API, AI Developer Tools, AI Models, Large Language Models (LLMs)
- 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: enterprise (custom pricing), while OnAPI is free
- #10N
NVIDIA makes GPUs, AI software and developer tools for AI computing, graphics, data centers and robotics across many industries.
In common with OnAPI: AI Agent, AI API, AI Developer Tools, AI Image Generator, AI Models, Large Language Models (LLMs)
Pricing: free, same as OnAPI
- #11
PremAI is a private AI platform for enterprises and consumers, with custom finetuned models, encrypted inference, and open-source RAG models.
In common with OnAPI: AI Agent, AI API, AI Developer Tools, AI Image Generator, AI Models, Large Language Models (LLMs)
- They offer open-source models like Prem-1B-SQL and Prem-1B Series for…
Pricing: enterprise (custom pricing), while OnAPI is free
- #12
PoYo.AI is a unified AI API platform giving developers one integration for hundreds of image, video, music and chat generation models.
In common with OnAPI: AI API, AI Developer Tools, AI Image Generator, AI Models, AI Music Generator, AI Video Generator
Pricing: free, same as OnAPI
- #13
MakeHub is an AI API load balancer that routes calls across model providers to cut costs and add failover protection.
In common with OnAPI: AI Agent, AI API, AI Developer Tools, AI Models, Large Language Models (LLMs)
- 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, same as OnAPI
- #14
SkillBoss is a unified API platform giving AI agents and developers access to 700+ AI models and 1000+ skills through one account.
In common with OnAPI: AI Agent, AI API, AI Developer Tools, AI Image Generator, AI Video Generator
- Unified API platform providing 700+ models and skills for AI agents
Pricing: free, same as OnAPI
- #15
Pinokio is a browser-based tool for installing, running, and controlling AI apps and other server applications locally.
In common with OnAPI: AI Agent, AI Developer Tools, AI Image Generator, AI Models, AI Video Generator, Large Language Models (LLMs)
- It allows you to install
- You can download verified scripts from verified publishers
Pricing: free, same as OnAPI
- #16
Tila is a visual AI workspace for image, video and text generation with multiple AI models in one place.
In common with OnAPI: AI Agent, AI Image Generator, AI Text Generator, AI Video Generator, Large Language Models (LLMs)
- All-in-one visual workspace eliminates need for multiple subscriptions and tab switching
- Integrates a wide range of top-tier AI models in one place
- Multi-agent reasoning technology automates complex tasks and optimizes prompt generation
Pricing: free, same as OnAPI
- #17
Crun AI is a unified API that gives developers one entry point to over 100 AI video, image, and audio generation models.
In common with OnAPI: AI API, AI Developer Tools, AI Image Generator, AI Music Generator, AI Video Generator
- Unified API for accessing 100+ top-tier video
Pricing: free, same as OnAPI
- #18
Venice AI is a private AI text, image, code and character generator that uses a decentralized network to keep prompts private.
In common with OnAPI: AI Agent, AI API, AI Image Generator, AI Text Generator, Large Language Models (LLMs)
- It uses a decentralized network to keep AI prompts private
Pricing: free, same as OnAPI
- #19
ModelsLab is an API platform that lets developers add image generation, chat, and voice cloning to their apps without managing GPUs.
In common with OnAPI: AI API, AI Developer Tools, AI Image Generator, AI Models, AI Video Generator, Large Language Models (LLMs)
- This enables users to leverage artificial intelligence in an efficient and…
Pricing: free, same as OnAPI
- #20
Infrastructure that gives AI agents a digital identity, payments, email, and tools, plus AI chat, music, image, and video generators.
In common with OnAPI: AI Agent, AI Developer Tools, AI Image Generator, AI Music Generator, AI Video Generator
- It allows developers to give their AI agents the ability to transact and communicate…
Pricing: free, same as OnAPI
- #21
Single API gateway that routes requests across 200+ AI models for text, image and video generation, with unified billing.
In common with OnAPI: AI API, AI Developer Tools, AI Image Generator, AI Video Generator, Large Language Models (LLMs)
- Unified API gateway for 200+ AI models with smart routing and unified billing
Pricing: free, same as OnAPI
- #22
Multi-model AI chat platform that gives you ChatGPT, Claude, DeepSeek and other models in one place for text, image and code tasks.
In common with OnAPI: AI Image Generator, AI Models, AI Music Generator, AI Text Generator, AI Video Generator
- All-in-one AI chat platform with multi-model support for various tasks
Pricing: free, same as OnAPI
- #23
APIXO is a unified AI API platform that gives developers one endpoint for image, video, audio, and text generation models from multiple providers.
In common with OnAPI: AI API, AI Image Generator, AI Music Generator, AI Video Generator, Large Language Models (LLMs)
- APIXO is built for teams that want production-ready AI infrastructure
Pricing: free, same as OnAPI
- #24
Stability AI builds open-source AI models for generating images, video, 3D assets and audio, including the Stable Diffusion text-to-image model.
In common with OnAPI: AI API, AI Image Generator, AI Models, AI Music Generator, AI Video Generator
Pricing: free, same as OnAPI
How we picked these OnAPI alternatives
We rank tools by how closely they match OnAPI: 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 OnAPI in 2026?
The closest alternatives to OnAPI are APIMart, Replicate, MiniMax, AIverse and Modal. They are ranked by how many categories and tags they share with OnAPI and how similar their descriptions are, then by community votes and views on SoftwareVital.
What is the closest alternative to OnAPI?
APIMart is the closest match because it shares AI API, AI Developer Tools and AI Image Generator with OnAPI. It is free.
Are there free alternatives to OnAPI?
Yes. 22 of the 24 alternatives have a free or freemium plan, including APIMart (free), Replicate (freemium), MiniMax (free), AIverse (free) and Modal (free). OnAPI is free.
Which OnAPI alternatives are paid or enterprise tools?
Reka (enterprise) and PremAI (enterprise) use paid or enterprise pricing, which usually means more support and admin options for teams.
How does OnAPI compare to APIMart?
APIMart overlaps with OnAPI in AI API, AI Developer Tools and AI Image Generator. Its listed features include always On. Pricing: free, same as OnAPI. Open the side-by-side compare page for a full breakdown.
What category is OnAPI in?
OnAPI is listed under AI Agent on SoftwareVital. Browse that category to see more tools in the same group.