Google: Gemini 4 Hydrogen API
Gemini 4 Hydrogen brings cutting-edge intelligence to everyone, with speed and efficiency for everyday coding and agentic workflows, featuring a unified 1M-token context window and long decode up to 1M tokens.
- Context window: 1,048,576 tokens
- Max output: 65,536 tokens
- Input: text, image, video, audio, file
- Output: text
- Reasoning: Supported
- Tool calling: Supported
- File input: Supported
- Released: 2026-11-12
- Knowledge cutoff: 2026-03-31
Frequently Asked Questions
What is the context window of Gemini 4 Hydrogen?
Gemini 4 Hydrogen supports a context window of up to 1,048,576 tokens.
Does Gemini 4 Hydrogen support function calling?
Yes. Gemini 4 Hydrogen supports tool / function calling.
Does Gemini 4 Hydrogen support reasoning?
Yes. Gemini 4 Hydrogen is a reasoning-capable model.
What is the knowledge cutoff of Gemini 4 Hydrogen?
The knowledge cutoff of Gemini 4 Hydrogen is 2026-03-31.