
OpenRouter
MandAPI
APIClan.us
OpenAI
APIVAI
Api.Airforce
liteLLM
One OpenAI-compatible API for GPT, Claude, Gemini, Flux, Kling and 100+ AI models. Compare pricing, switch models instantly, and pay per token with no subscription.

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| Website | velokey.ai | diffee.me |
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Serving AI developers, SaaS, and startups, we provide efficient, stable, and cost-effective LLM API integration to lower AI barriers and accelerate development.
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When comparing Velokey and Diffee, you can also consider the following products.


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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.
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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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