Gemini 4 Hydrogen API pricing
Gemini 4 Hydrogen costs $1.50 per million input tokens and $7.50 per million output tokens on Google's API. Input read back from the prompt cache costs $0.075 per million. A typical support chat reply (1,500 tokens in, 300 out) costs about $0.0045.
| Input | $1.50 per 1M tokens |
|---|---|
| Output | $7.50 per 1M tokens |
| Cached input | $0.075 per 1M tokens |
| Context window | 1.05M tokens |
| Reads | audio, files, images, text, video |
| Released | November 12, 2026 |
What requests cost on Gemini 4 Hydrogen
The same four requests on every page, so you can compare models directly.
| Request | Tokens in / out | Per request | Per 10,000 requests |
|---|---|---|---|
| A support chat reply | 1,500 / 300 | $0.0045 | $45.00 |
| Summarizing a 10-page document | 6,000 / 500 | $0.013 | $127 |
| Sorting a support ticket into a category | 400 / 5 | $0.00064 | $6.38 |
| A question about a 120-page document | 60,000 / 800 | $0.096 | $960 |
Google's cheapest model here, Gemini 2.5 Flash-Lite, costs 94% less for the same chat reply. Whether it is good enough depends on the request: simple ones (sorting, short summaries, extraction) often are, hard reasoning often isn't.
Other Google models
| Model | Input | Output | A chat reply | Next to Gemini 4 Hydrogen |
|---|---|---|---|---|
| Gemini 2.5 Flash-Lite | $0.10 | $0.40 | $0.00027 | 94% less |
| Gemini 3.1 Flash-Lite | $0.25 | $1.50 | $0.00082 | 82% less |
| Gemini 3.5 Flash-Lite | $0.30 | $2.50 | $0.0012 | 73% less |
| Gemini 2.5 Flash | $0.30 | $2.50 | $0.0012 | 73% less |
| Gemini 3 Flash Preview | $0.50 | $3 | $0.0016 | 63% less |
| Gemini 3.8 Flash | $0.75 | $3.75 | $0.0022 | 50% less |
| Gemini 3.6 Flash | $0.75 | $3.75 | $0.0022 | 50% less |
| Gemini 2.5 Pro | $1.25 | $10 | $0.0049 | 8% more |
| Gemini 4 Carbon | $2 | $10 | $0.0060 | 33% more |
| Gemini 4 Argon | $2 | $10 | $0.0060 | 33% more |
| Gemini 3.1 Pro Preview | $2 | $12 | $0.0066 | 47% more |
Similar price from other companies
Gemini 4 Hydrogen pricing questions
How much does the Gemini 4 Hydrogen API cost per million tokens?
Gemini 4 Hydrogen costs $1.50 per million input tokens and $7.50 per million output tokens on Google's API, and input read back from the prompt cache costs $0.075 per million.
How much do 1,000 tokens cost on Gemini 4 Hydrogen?
1,000 input tokens cost $0.0015 and 1,000 output tokens cost $0.0075, at $1.50 and $7.50 per million.
What does one request cost on Gemini 4 Hydrogen?
A typical support chat reply, 1,500 tokens in and 300 out, costs about $0.0045: 1,500 × $1.50 / 1,000,000 plus 300 × $7.50 / 1,000,000.
Is there a cheaper Google model than Gemini 4 Hydrogen?
Yes. Gemini 2.5 Flash-Lite costs $0.10 per million input tokens and $0.40 per million output tokens, so the same chat reply costs about $0.00027. Whether it answers as well depends on the request: test it on your own prompts.
Paying Gemini 4 Hydrogen prices for every request?
Most apps send simple requests to the same strong model as the hard ones. PromptUnit checks each request your app sends and uses a cheaper model only when it is just as good for that request. You pay 20% of what it saves, and nothing if it saves nothing.
Checked November 13, 2026. Prices are read every day from Google's pricing page. Context window, inputs and release date come from OpenRouter's public model list.
These are the standard list prices on each provider's own API. Batch, flex and priority tiers, cloud platforms such as Amazon Bedrock or Google Vertex AI, and regional endpoints are priced differently. Request costs above count input and output tokens only, not cache, search or image fees.
Free to reuse (CC BY 4.0): today's list as JSON, and a copy of every day on GitHub.