Data points: 61
The readout for Gemini 3.1 Pro and Gemini 3 Flash Preview, before the detailed comparison sheet.
Decision read
Gemini 3.1 Pro
Gemini 3.1 Pro currently has the stronger profile, with verified wins split 3 to 1.
Evidence depth
61 data points
Includes 0 benchmark rows, 0 audit samples, and 5 provider examples.
Selection signal
Start with Gemini 3.1 Pro
The charts below split 5 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
Select a different model to open a new comparison URL.
Model compare Gemini 3.1 Pro vs Gemini 3 Flash Previewgemini-3-1-pro-vs-gemini-3-flash-preview | Model A Gemini 3.1 Pro | Model B Gemini 3 Flash Preview |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 3 wins | 1 wins |
| Where it leads | Free providers, Provider coverage, Recent tests |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
Gemini 3.1 Pro
63.6
Avg. score
Gemini 3 Flash Preview
71
Selected category
Reasoning
Gemini 3 Flash Preview leads by 15.4
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
No shared professional benchmark scores are available yet.
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 3.1 Pro | Gemini 3 Flash Preview |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Gemini 3.1 Pro | Gemini 3 Flash Preview |
|---|---|---|
5 tests | Gemini 3.1 Pro speed / latency 83 tok/s / 20273ms input / output No data |
This report only uses LMSpeed data for Gemini 3.1 Pro and Gemini 3 Flash Preview: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Gemini 3.1 Pro | Gemini 3 Flash Preview |
|---|---|---|
| When to choose each model | Gemini 3.1 Pro Gemini 3.1 Pro is stronger when you prioritize Free providers, Provider coverage, Recent tests. | Gemini 3 Flash Preview Gemini 3 Flash Preview is stronger when you prioritize Cheapest input price. |
TL;DR: Gemini 3.1 Pro leads across 61 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Gemini 3.1 Pro vs Gemini 3 Flash Preview into nearby model comparisons with enough verified LMSpeed data.
| Cheapest input price |
| Model metadata | Gemini 3.1 Pro exposes 1.0M tokens; notable signals: Text input, Image input, File input, Audio input. | Gemini 3 Flash Preview exposes 1.0M tokens; notable signals: Text input, Image input, File input, Audio input. |
|---|---|---|
| Developer | ||
| Context window | 1.0M tokens | 1.0M tokens |
| Max output | 65.5K tokens | 65.5K tokens |
| Released | Feb 2026 | No data |
| Modalities | Input AudioFileImageTextvideo Output Text | Input TextImageFileAudiovideo Output Text |
| Features | Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputAudio inputText outputTool calling |
| Parameters | No data | No data |
| Tokenizer | Gemini | Gemini |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | google/gemini-3.1-pro-preview | google/gemini-3-flash-preview |
| References | No data | No data |
Gemini 3 Flash Preview
speed / latency
N/A / N/A
input / output
No data
Crond0 tests | Gemini 3.1 Pro gemini-3.1-pro-preview speed / latency N/A / N/A input / output $2.00/M / $12.00/M | Gemini 3 Flash Preview gemini-3-flash-preview-免费 speed / latency N/A / N/A input / output $15.00/M / $15.00/M |
|---|
Nova AI0 tests | Gemini 3.1 Pro gemini-3.1-pro-preview speed / latency N/A / N/A input / output $2.00/M / $12.00/M | Gemini 3 Flash Preview [次]gemini-3-flash-preview speed / latency N/A / N/A input / output $0.020/M / $0.020/M |
|---|
北极星星0 tests | Gemini 3.1 Pro speed / latency N/A / N/A input / output No data | Gemini 3 Flash Preview speed / latency N/A / N/A input / output No data |
|---|
情酱的API站0 tests | Gemini 3.1 Pro gemini-3.1-pro-preview speed / latency N/A / N/A input / output $75.00/M / $300.00/M | Gemini 3 Flash Preview gemini-3-flash-preview群友免费 speed / latency N/A / N/A input / output $75.00/M / $300.00/M |
|---|
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
