Gemini 3.1 Pro Preview
Gemini 3.1 Pro Preview is Google's preview Gemini 3-series model for complex multimodal reasoning, software engineering behavior, and agentic workflows requiring precise tool use.
Provider
Model family
Google Gemini
Multimodal LLM
Cost tier
Pro
Status
Preview
Why teams choose it
Long-context and Gemini surfaces
Helps when you consolidate analysis in Google-hosted AI paths and rely on large-context ingestion or multimodal prompts.
Long-context analysis
Helps teams summarize, compare, and extract insights from long documents without losing important nuance.
Document-heavy workflows
Useful where teams ingest PDFs, slides, audio, or long threads and need repeatable extraction—not one-off prompting.
Cost-efficient routing
Useful as part of a routing stack where cheap models handle drafts and confirmations and this tier handles genuinely hard passages.
Tradeoffs to know
- Preview model; behavior, availability, and endpoint details can change.
- No free tier in the Gemini API according to the Gemini 3 guide.
When not to use this
- Not ideal for simple tasks where cheaper models in the same lineup are good enough.
- Avoid for latency-sensitive real-time chat when raw response speed outweighs reasoning depth.
- Confirm limits, pricing, and regional availability on the provider side before committing production workloads.
Technical specs
- Inputs
- text, image, audio, video, PDF
- Outputs
- text
- Capabilities
- reasoning, coding, multimodal, long context, function calling, code execution
- License
- Proprietary API
- Model string
gemini-3-1-pro-preview
Benchmarks
No benchmark data yet.
Google Gemini family lineup
Current models
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