OpenAILLM APIs & Infrastructure
Developer platform and API for OpenAI's models, billed per token
Pricing: Pay as you go per token; rates vary by model and processing mode
AI tools for building an AI product
Building a product on top of AI models adds a few jobs to the usual ones: choosing a model, writing the code with help, and watching what the model does in production.
These are the tools on Stackboo for each of those jobs. Where a tool can run on your own key or your own server, its listing says so.
1. Models and APIs
Where the model runs. Look at how usage is billed, which models you can reach, and whether one account can switch between them.
AnthropicLLM APIs & Infrastructure
Claude models through apps and an API, from an AI safety company
Pricing: API billed per million tokens; Claude Free, Pro €15/month billed annually
OpenRouterLLM APIs & Infrastructure
One API for 500+ AI models from 80+ providers
Pricing: Free tier (25+ free models); pay as you go with a 5.5% platform fee
Hugging FaceLLM APIs & Infrastructure
Hub for open models, datasets and Spaces, with a unified inference API
Pricing: Free Hub; PRO $9/month, Team $20/user/month
2. Write the code
Assistants inside your editor. Compare the free tier, and whether you can bring your own model key.
GitHub CopilotAI Coding
AI pair programmer and coding agent inside your editor and on GitHub
Pricing: Free plan (2,000 completions/month); Pro $10/month, Pro+ $39/month
3. Add chat and agents
Build a chatbot or an agent without writing the plumbing yourself.
ChatbaseAI Chatbots & Support
Build an AI support agent trained on your own data, no code
Pricing: Free plan (50 message credits/month); Hobby $40/month
How this guide is made
A guide groups tools by the job they do. It is not a ranking: rankings on Stackboo come from votes, and a paid Featured spot never changes them. A tool is listed here only while its Stackboo listing is live, and its tagline and pricing line are the ones on that listing.
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