MODELS / GOOGLE

Gemini 4 Hydrogen

Gemini 4 Hydrogen is Google's fast multimodal model for reasoning, coding, and agentic workflows. It supports understanding text, images, video, and documents, with tool calling and structured outputs for building responsive applications.

START BUILDING COMPARE

TEXTREASONINGFILE-INPUTVISIONTOOL-USEWEB-SEARCHIMPLICIT-CACHINGVIDEO-INPUTSTRUCTURED-OUTPUT

CONTEXT WINDOW

MAX OUTPUT TOKENS

$1.50

INPUT PRICE / 1M TOKENS

$7.50

OUTPUT PRICE / 1M TOKENS

QUICKSTART

PROTOCOL:: OPENAI COMPATIBLE
STREAMING:: SUPPORTED

Call it in one request.

OpenAI-compatible: change the base URL, and the setup is complete.

curl https://enterprise.blackbox.ai/v1/chat/completions \
  -H "Authorization: Bearer $BLACKBOX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "blackboxai/google/gemini-4-hydrogen",
    "messages": [{ "role": "user", "content": "Hello!" }],
    "stream": true
  }'

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ.get("BLACKBOX_API_KEY"),
    base_url="https://enterprise.blackbox.ai/v1",
)

stream = client.chat.completions.create(
    model="blackboxai/google/gemini-4-hydrogen",
    messages=[{"role": "user", "content": "Hello!"}],
    stream=True,
)

for chunk in stream:
    print(chunk.choices[0].delta.content or "", end="", flush=True)

import OpenAI from 'openai';

const client = new OpenAI({
  apiKey: process.env.BLACKBOX_API_KEY,
  baseURL: 'https://enterprise.blackbox.ai/v1',
});

const stream = await client.chat.completions.create({
  model: 'blackboxai/google/gemini-4-hydrogen',
  messages: [{ role: 'user', content: 'Hello!' }],
  stream: true,
});

for await (const chunk of stream) {
  process.stdout.write(chunk.choices[0]?.delta?.content || '');
}

SPECIFICATIONS

CONTEXT:: 1M
PROVIDER:: GOOGLE
TYPE:: TEXT

The full spec sheet.

Context, pricing, modalities, routing, and deployment: everything Gemini 4 Hydrogen supports, in one table.

MODEL ID: blackboxai/google/gemini-4-hydrogen
DEVELOPED BY: Google
MODEL TYPE: Text
RELEASED: Nov 12, 2026
CONTEXT WINDOW: 1M
MAX OUTPUT TOKENS: -
INPUT MODALITIES: text, image, pdf, video
OUTPUT MODALITIES: text
INPUT PRICE: $1.50 / 1M tokens
OUTPUT PRICE: $7.50 / 1M tokens
CACHE READ: $0.075 / 1M tokens
REASONING: Supported
DATA RETENTION: Standard retention
DEDICATED DEPLOYMENT: Not available (closed-weight model)
SUPPORTED PARAMETERS: max_tokenstemperaturestoptoolstool_choicereasoninginclude_reasoningresponse_formatstructured_outputs

MODELS:: 3

Also worth a look.

GOOGLE

Gemini 2.5 Flash

1M context · $0.3 / 1M tokens input · $2.50 / 1M tokens output

GOOGLE

Gemini 2.5 Flash (Batch)

1M context · $0.15 / 1M tokens input · $1.25 / 1M tokens output

GOOGLE

Gemini 2.5 Flash Lite

1.0M context · $0.1 / 1M tokens input · $0.4 / 1M tokens output