
OpenRouter
MandAPI
APIClan.us
Api.Airforce
boldrouter
Requesty.ai
liteLLM
One API key for Claude and GPT models, compatible with the Anthropic and OpenAI formats. Works with Claude Code, Cursor and Codex CLI. Pay as you go, below official list prices.

Exam.net
StudySpaces is a white-label tutoring and test prep platform with built-in SAT, ACT, etc. curriculum, auto-graded mock exams, and a branded student portal.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | apivai.com | studyspaces.com |
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In their own words, as submitted to SaaSHub.


APIVAI is a pay-as-you-go API gateway for Claude and GPT models. One API key works with both the Anthropic Messages format and the OpenAI Chat Completions / Responses formats, so existing tools and SDKs work by changing only the base URL. Key features One key for Claude (Fable, Opus, Sonnet,...
No description of StudySpaces yet.
How often each product is chosen within a category, 0–100% relative to the other.


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When comparing APIVAI and StudySpaces, you can also consider the following products.


A platform for creating and conducting exams and assessments.
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OpenAI-compatible multi-model API for GPT, Claude, Gemini, DeepSeek and more.
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OpenAI-compatible AI API gateway for GPT, Claude & Grok. Change baseURL, keep your code. Pay-as-you-go USDT; $0.20 auto credit on signup.
Compare APIClan.us to APIVAI or StudySpaces:

Cheap unified AI API: reach Claude, GPT, Gemini and 100+ models via one OpenAI-compatible endpoint. Pay-as-you-go from $0, free tier, official SDKs in 8 languages.
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A unified, OpenAI-compatible gateway to every major LLM provider. One endpoint, one key, one bill - with automatic routing and failover.
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