Google: DiffusionGemma
DiffusionGemma is a reasoning model from Google released on Sep 19, 2026. It reads text and writes text, with a 262K token context window and up to 33K tokens per reply.
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It costs $0.05 per million input tokens and $0.15 per million output tokens. Cached input bills at $0.025, 50% less than fresh input.
It supports prompt caching, and its weights are open, so you can host it yourself.
- Modalities
- In / out price
- $0.05 / $0.15 per 1M
- Context
- 262K
- Max output
- 33K
- Released
- Sep 19, 2026
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
DiffusionGemma pricing
USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $0.05 / 1M tokens | |
|---|---|---|
| Output | $0.15 / 1M tokens | |
| Cached input (read) | $0.025 / 1M tokens | 50% off input |
What DiffusionGemma costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call DiffusionGemma through an OpenAI compatible API.
- Reasoning
reasoning
Alternatives to DiffusionGemma
Models that take the same inputs, closest in price, cheaper ones first.
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DiffusionGemma questions
How much does the DiffusionGemma API cost?
$0.05 per million input tokens and $0.15 per million output tokens, with cached input at $0.025. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of DiffusionGemma?
262,144 tokens of input, and it can write up to 32,768 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Does DiffusionGemma support tool calling?
Not through the standard tools parameter. For an agent that calls your APIs, pick a model from the alternatives below that does.
Is DiffusionGemma open source?
Its weights are published, so you can run it on your own hardware or a cloud of your choice. Read the license before commercial use.
When was DiffusionGemma released?
Sep 19, 2026.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.
Building on DiffusionGemma?
I test your real tasks on it and the two closest alternatives, then ship the agent on whichever wins on cost and accuracy.
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