Retired Mar 2026
Gemini 3 Pro Preview
Google's advanced reasoning model and the Pro tier of the Gemini 3 generation.
Key Specifications
- Context window
- 1M tokens
- Max output
- 66K tokens
- Knowledge cutoff
- web search available
- Released
- Inputs
- Text, image, video, audio
- Capabilities Show details
- Reasoning Thinks before it answers, always on or as a switchable mode. Function calling Connect to external tools, APIs, and systems. Structured output Return responses in structured formats like JSON. Web search Search the web for up-to-date information. Code execution Write and execute code in a sandboxed environment. File upload Process uploaded documents, spreadsheets, and other files.
Frequently Asked Questions
What is Gemini 3 Pro Preview good for?
Reasoning-heavy multimodal work: it was the Pro tier of the Gemini 3 generation.
When is Gemini 3 Pro Preview not a good fit?
Any new work: Google retired it in March 2026, and Gemini 3.1 Pro Preview refines the same series. Closed weights, so no self-hosting.
How does Gemini 3 Pro Preview compare with Gemini 3.1 Pro Preview?
Google says Gemini 3.1 Pro Preview refines Gemini 3 Pro Preview with better thinking, less token use and more grounded, factually consistent output, tuned for software engineering and agent work that needs precise tool use. Same 1M-token context and text, image, audio and video input. Gemini 3 Pro Preview came out 3 months earlier.
Can I self-host Gemini 3 Pro Preview?
No. Google Cloud does not publish the weights; Gemini 3 Pro Preview is available only through hosted APIs.
More from Google Cloud
| Model | Context | Input / 1M | Output / 1M |
|---|---|---|---|
|
Gemini 3.5 Flash-Lite
|
1M | $0.30 | $2.50 |
|
Gemini 3.6 Flash
|
1M | $0.75 | $3.75 |
|
Gemini 3.7 Flash
|
1M | $0.75 | $3.75 |
|
Gemini 3.8 Flash
|
1M | $0.75 | $3.75 |
|
Gemini 2.5 Flash
|
1M | $0.30 | $2.50 |
|
Gemini 2.5 Flash-Lite
|
1M | $0.10 | $0.40 |
|
Gemini 2.5 Pro
|
1M | $1.25 | $10.00 |
|
Gemini 3 Flash Preview
|
1M | $0.50 | $3.00 |