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AnyFast is compatible with the Google Gemini native API. Use the official Google Generative AI SDK — just change the endpoint to AnyFast.

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Endpoint

POST https://www.anyfast.ai/v1beta/models/{model}:generateContent

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Authentication

Include your AnyFast API key as a Bearer token: 
Authorization: Bearer YOUR_API_KEY

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Quick example

curl https://www.anyfast.ai/v1beta/models/gemini-2.5-pro:generateContent \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [
      {
        "role": "user",
        "parts": [{ "text": "Hello, Gemini!" }]
      }
    ]
  }'

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Supported models

ModelDescription
gemini-3.1-pro-previewLatest Gemini 3.1 Pro
gemini-3.1-flash-image-previewGemini 3.1 Flash with image generation
gemini-3.1-flash-lite-previewGemini 3.1 Flash Lite
gemini-3-pro-previewGemini 3 Pro
gemini-3-pro-image-previewGemini 3 Pro with image generation
gemini-3-flash-previewGemini 3 Flash
gemini-2.5-proGemini 2.5 Pro
gemini-2.5-flashGemini 2.5 Flash
gemini-2.5-flash-liteGemini 2.5 Flash Lite
gemini-2.0-flashGemini 2.0 Flash

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Features

  • System instructions — Use systemInstruction for context and instructions
  • Function calling — Define functions via tools.functionDeclarations
  • Structured output — Set generationConfig.responseMimeType to "application/json" with a responseSchema
  • Safety settings — Configure content filtering with safetySettings
  • Multi-modal input — Send images via inlineData in content parts