gemini-2.5-pro-stream

Generate model response in streaming mode via SSE.

POST /v1beta/models/gemini-2.5-pro:streamGenerateContent

cURL

cURL

curl --request POST \
  --url 'https://www.anyfast.ai/v1beta/models/gemini-2.5-pro:streamGenerateContent?key=<token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "contents": [
    {
      "role": "user",
      "parts": [
        {
          "text": "Hello, tell me about yourself."
        }
      ]
    }
  ],
  "systemInstruction": {
    "parts": [
      {
        "text": "You are a helpful assistant."
      }
    ]
  },
  "safetySettings": [
    {
      "category": "string",
      "threshold": "string"
    }
  ],
  "generationConfig": {
    "temperature": 1,
    "topP": 1,
    "thinkingConfig": {
      "includeThoughts": true,
      "thinkingBudget": 26240
    }
  }
}
'

import requests

url = "https://www.anyfast.ai/v1beta/models/gemini-2.5-pro:streamGenerateContent"

payload = {
    "contents": [
        {
            "role": "user",
            "parts": [{ "text": "Hello, tell me about yourself." }]
        }
    ],
    "systemInstruction": { "parts": [{ "text": "You are a helpful assistant." }] },
    "safetySettings": [
        {
            "category": "<string>",
            "threshold": "<string>"
        }
    ],
    "generationConfig": {
        "temperature": 1,
        "topP": 1,
        "thinkingConfig": {
            "includeThoughts": True,
            "thinkingBudget": 26240
        }
    }
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    contents: [{role: 'user', parts: [{text: 'Hello, tell me about yourself.'}]}],
    systemInstruction: {parts: [{text: 'You are a helpful assistant.'}]},
    safetySettings: [{category: '<string>', threshold: '<string>'}],
    generationConfig: {
      temperature: 1,
      topP: 1,
      thinkingConfig: {includeThoughts: true, thinkingBudget: 26240}
    }
  })
};

fetch('https://www.anyfast.ai/v1beta/models/gemini-2.5-pro:streamGenerateContent', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://www.anyfast.ai/v1beta/models/gemini-2.5-pro:streamGenerateContent",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'contents' => [
        [
                'role' => 'user',
                'parts' => [
                                [
                                                                'text' => 'Hello, tell me about yourself.'
                                ]
                ]
        ]
    ],
    'systemInstruction' => [
        'parts' => [
                [
                                'text' => 'You are a helpful assistant.'
                ]
        ]
    ],
    'safetySettings' => [
        [
                'category' => '<string>',
                'threshold' => '<string>'
        ]
    ],
    'generationConfig' => [
        'temperature' => 1,
        'topP' => 1,
        'thinkingConfig' => [
                'includeThoughts' => true,
                'thinkingBudget' => 26240
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://www.anyfast.ai/v1beta/models/gemini-2.5-pro:streamGenerateContent"

	payload := strings.NewReader("{\n  \"contents\": [\n    {\n      \"role\": \"user\",\n      \"parts\": [\n        {\n          \"text\": \"Hello, tell me about yourself.\"\n        }\n      ]\n    }\n  ],\n  \"systemInstruction\": {\n    \"parts\": [\n      {\n        \"text\": \"You are a helpful assistant.\"\n      }\n    ]\n  },\n  \"safetySettings\": [\n    {\n      \"category\": \"<string>\",\n      \"threshold\": \"<string>\"\n    }\n  ],\n  \"generationConfig\": {\n    \"temperature\": 1,\n    \"topP\": 1,\n    \"thinkingConfig\": {\n      \"includeThoughts\": true,\n      \"thinkingBudget\": 26240\n    }\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://www.anyfast.ai/v1beta/models/gemini-2.5-pro:streamGenerateContent")
  .header("Content-Type", "application/json")
  .body("{\n  \"contents\": [\n    {\n      \"role\": \"user\",\n      \"parts\": [\n        {\n          \"text\": \"Hello, tell me about yourself.\"\n        }\n      ]\n    }\n  ],\n  \"systemInstruction\": {\n    \"parts\": [\n      {\n        \"text\": \"You are a helpful assistant.\"\n      }\n    ]\n  },\n  \"safetySettings\": [\n    {\n      \"category\": \"<string>\",\n      \"threshold\": \"<string>\"\n    }\n  ],\n  \"generationConfig\": {\n    \"temperature\": 1,\n    \"topP\": 1,\n    \"thinkingConfig\": {\n      \"includeThoughts\": true,\n      \"thinkingBudget\": 26240\n    }\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://www.anyfast.ai/v1beta/models/gemini-2.5-pro:streamGenerateContent")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"contents\": [\n    {\n      \"role\": \"user\",\n      \"parts\": [\n        {\n          \"text\": \"Hello, tell me about yourself.\"\n        }\n      ]\n    }\n  ],\n  \"systemInstruction\": {\n    \"parts\": [\n      {\n        \"text\": \"You are a helpful assistant.\"\n      }\n    ]\n  },\n  \"safetySettings\": [\n    {\n      \"category\": \"<string>\",\n      \"threshold\": \"<string>\"\n    }\n  ],\n  \"generationConfig\": {\n    \"temperature\": 1,\n    \"topP\": 1,\n    \"thinkingConfig\": {\n      \"includeThoughts\": true,\n      \"thinkingBudget\": 26240\n    }\n  }\n}"

response = http.request(request)
puts response.read_body

200

{
  "candidates": [
    {
      "content": {
        "parts": [
          {
            "text": "Hello!"
          }
        ],
        "role": "model"
      },
      "finishReason": "STOP"
    }
  ],
  "usageMetadata": {
    "promptTokenCount": 123,
    "candidatesTokenCount": 123,
    "totalTokenCount": 123
  }
}

{
  "error": {
    "code": 123,
    "message": "<string>",
    "status": "<string>"
  }
}

{
  "error": {
    "code": 123,
    "message": "<string>",
    "status": "<string>"
  }
}

Query Parameters

key · string · required

API Key

alt · string

Set to sse for Server-Sent Events streaming

Body

application/json

contents · object[] · required

Array of conversation contents with user and model messages.

Show child attributes

Example:

[
  {
    "role": "user",
    "parts": [
      { "text": "Hello, tell me about yourself." }
    ]
  }
]

systemInstruction · object

System instruction

Show child attributes

Example:

{
  "parts": [{ "text": "You are a helpful assistant." }]
}

safetySettings · object[]

Safety filter settings

Show child attributes

generationConfig · object

Show child attributes

Response

200

application/json

Streaming response generated successfully

candidates · object[]

Show child attributes

usageMetadata · object

Show child attributes