Plain-English Summary
A premium Gemini model for complex reasoning, advanced software engineering, and sophisticated agent workflows.
Gemini 3.1 Pro Preview
A premium Gemini model for complex reasoning, advanced software engineering, and sophisticated agent workflows.
Gemini 3.1
Multimodal LLM
Preview
Open weights: No
API: Yes
Technical Notes
Native multimodal long-context model with advanced reasoning, function calling, structured outputs, and code execution.
Best For
Hard reasoning, complex coding, research, multimodal agents
Watch Out For
Preview lifecycle can change; typically more expensive and slower than Flash tiers.
Model Specs
- Maker
- Country
- Not listed
- Family
- Gemini 3.1
- Type
- Multimodal LLM
- Release date
- Not listed
- Date confidence
- Not publicly stated
- Status
- Preview
- Context window
- 1,048,576 tokens
- Max output
- 65,536
- Parameters
- Not disclosed
- Active parameters
- Not disclosed
- Architecture
- Proprietary native-multimodal transformer
- Reasoning
- Yes
- Tool calling
- Yes
- Structured output
- Yes
- API available
- Yes
- Open weights
- No
- Self-hostable
- No
- License
- Proprietary
- Inputs
- Text, image, audio, video, PDF
- Outputs
- Text
- Approx. price
- See provider pricing
- How to access
- Provider website or API
- Model / API ID
- gemini-3.1-pro-preview
- Knowledge cutoff
- Not publicly disclosed
- Fine-tuning
- Prompting / RAG
- Completeness
- 86 %
- Verified
- Jul 18, 2026
- Snapshot date
- Jul 18, 2026
- Source
- Official source