Pro style
Absorbs the whole source set
Useful when splitting material would hide relationships.
Gemini 3.1 Pro vs 3.8 Flash.
Gemini 3.1 Pro Preview is the lane for large, mixed inputs. Gemini 3.8 Flash is the lane for quick turns and repeated lightweight work.
Floatboat · Gemini
Current model
Gemini
What do you want to finish?
Analyze this document setCompare these screenshotsClassify this batch quickly
Describe the outcome or add project files…
- Live chat models
- 3.1 Pro Preview · 3.8 Flash
- Pro context
- 1M+ long context
- Inputs
- Long text · Images · Mixed material
- API key
- Not required
Gemini model characteristics
An analyst for material that is too large or varied to inspect piecemeal.
Gemini Pro is defined by how much source material it can keep in view; Flash is defined by how quickly it can turn repeated requests around.
Flash style
Responds in quick cycles
Useful for frequent, lightweight processing.
Input strength
Text and images together
Keeps visual and textual evidence in one analysis.
Decision rule
Remove the actual bottleneck
Choose Pro for breadth and Flash for pace.
Two operating modes
Pro absorbs more; Flash turns work around faster.
Both are directly selectable, but they solve different bottlenecks.
gemini-3.1-pro-preview
Long-context understanding and multimodal image-text analysis.
Client picker · Preview
gemini-3.8-flash
Low-latency, high-throughput processing for frequent tasks.
Client picker
gemini-3-pro-image-preview
Complex generation, precision editing, multi-image redraw, and style fusion.
Live · ai-image-drawing
gemini-2.5-flash-image / gemini-3.1-flash-image-preview
Fast image generation and local edits.
Live · ai-image-drawing
Context-heavy work
Use Gemini when the source set is part of the problem.
These examples depend on seeing relationships across documents, images, or repeated inputs.
Cross-document research
Task input
Compare a large collection without losing contradictions between sources.
Processing focus
Pro keeps more of the source set available while forming themes and checking claims.
Expected result: A synthesis that remains traceable to the full evidence set.
Visual product review
Task input
Review screenshots together with requirements and written feedback.
Processing focus
Pro connects layout evidence, text, and constraints in one pass.
Expected result: Prioritized findings grounded in both images and requirements.
High-volume classification
Task input
Apply a clear rubric to many small pieces of content.
Processing focus
Flash prioritizes consistent, fast turns over extensive deliberation.
Expected result: A processed batch with less turnaround time.
Gemini in Floatboat
Long context, mixed inputs, and a faster companion model.
The live chat models cover analysis and throughput; separate Gemini image models run through the drawing Combo.
1M+ context analysis
Gemini 3.1 Pro Preview is positioned for long documents, large code sets, and cross-file work.
Image-text understanding
Pro can analyze visual and textual material together in the client workflow.
High-throughput response
Gemini 3.8 Flash handles frequent lightweight requests with a faster cadence.
Separate image-generation lane
Gemini image models are live through `ai-image-drawing`, not the main chat picker.
Choose by what is slowing the work down.
Choose Gemini Pro when
- You need to inspect a large source set as a whole.
- The task combines images, text, or many files.
- Relationships across the material matter more than response speed.
Choose Flash or another route when
- The task is repeated, lightweight, and latency-sensitive.
- Deep architecture decisions are the main risk; consider Claude Opus.
- The deliverable is a generated image; use the drawing Combo.
Decision rule
Choose the bottleneck you need to remove.
Gemini Pro
Use when fitting the whole source set into one analysis matters more than response speed.
Gemini Flash
Use when many small requests must complete quickly and consistently.
Explore Other Model Families
Compare model families by the kind of work they support. Availability differs by model and entry point.
Gemini · FAQ
Is Gemini 3.1 Pro still a preview model?+
The current client identifier is `gemini-3.1-pro-preview`. Preview identifies a pre-release model version and does not indicate general availability.
Should I always use Pro for better quality?+
No. Flash is the better fit when latency and throughput define success; Pro is for context-heavy or multimodal analysis.
What does the 1M+ context help with?+
It is useful when relationships across a large document set, many files, or mixed text-and-image material need to remain visible in one analysis.
Which Gemini image-generation models are listed?+
The matrix lists `gemini-3-pro-image-preview`, `gemini-2.5-flash-image`, and `gemini-3.1-flash-image-preview` for complex generation, editing, and faster image work.
What is the Gemini 3.1 Pro model ID?+
The standard model ID is `gemini-3.1-pro-preview`; `3.1-pro` and Gemini 3.1 Pro are display aliases for the same model.
Read across files with Pro, move quickly with Flash
Choose Gemini 3.1 Pro for multimodal, long-context analysis and 3.8 Flash for fast passes over the same material.