Data points: 85
The readout for Gemini 3.1 Flash Lite and Gemini 3.1 Pro, before the detailed comparison sheet.
Decision read
Tie
Tie currently has the stronger profile, with verified wins split 3 to 3.
Evidence depth
85 data points
Includes 8 benchmark rows, 1 audit samples, and 9 provider examples.
Selection signal
Tie
The charts below split 18 high-signal samples across speed, scores, and audit health.
Model compare Gemini 3.1 Flash Lite vs Gemini 3.1 Progemini-3-1-flash-lite-vs-gemini-3-1-pro | Model A Gemini 3.1 Flash Lite | Model B Gemini 3.1 Pro |
|---|---|---|
| Overall leader | Tie | Tie |
| Verified metric wins | 3 wins | 3 wins |
| Where it leads | Cheapest input price, Average speed, First-token latency |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Gemini 3.1 Flash Lite | Gemini 3.1 Pro |
|---|---|---|
| GPQA | 82.2%#48 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 3.1 Flash Lite | Gemini 3.1 Pro |
|---|---|---|
Winner: Gemini 3.1 Pro | Gemini 3.1 Flash Lite gemini-3.1-flash-lite-preview No audit yet | Gemini 3.1 Pro gemini-3.1-pro-preview |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Gemini 3.1 Flash Lite | Gemini 3.1 Pro |
|---|---|---|
20 tests | Gemini 3.1 Flash Lite gemini-3.1-flash-lite speed / latency 218 tok/s / 4094ms input / output $0/M / $0/M |
This report only uses LMSpeed data for Gemini 3.1 Flash Lite and Gemini 3.1 Pro: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Gemini 3.1 Flash Lite | Gemini 3.1 Pro |
|---|---|---|
| When to choose each model | Gemini 3.1 Flash Lite Gemini 3.1 Flash Lite is stronger when you prioritize Cheapest input price, Average speed, First-token latency. | Gemini 3.1 Pro Gemini 3.1 Pro is stronger when you prioritize Free providers, Provider coverage, Recent tests. |
TL;DR: Tie leads across 85 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Gemini 3.1 Flash Lite vs Gemini 3.1 Pro into nearby model comparisons with enough verified LMSpeed data.
| Free providers, Provider coverage, Recent tests |
| Model metadata | Gemini 3.1 Flash Lite exposes 1.0M tokens; notable signals: Text input, Image input, File input, Audio input. | Gemini 3.1 Pro 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 | May 2026 | Feb 2026 |
| Modalities | Input TextImagevideoFileAudio Output Text | Input AudioFileImageTextvideo 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-flash-lite | google/gemini-3.1-pro-preview |
| References | No data | No data |
| SciCode | 41.9%#37 | 58.9%#2 |
|---|
| HLE | 16.2%#49 | 44.7%#3 |
|---|
| Output speed | 319.9 tok/s#3 | 133.4 tok/s#35 |
|---|
| Input price | $0.250/M#12 | $2.00/M#36 |
|---|
| Output price | $1.50/M#20 | $12.00/M#42 |
|---|
| Blended price | $0.563/M#27 | $4.50/M#61 |
|---|
| Time to first answer token | 5.31 s#50 | 28.68 s#84 |
|---|
Audit score
79
Gemini 3.1 Pro
gemini-3.1-pro-preview
speed / latency
113 tok/s / 15704ms
input / output
$0/M / $0/M
Sliam15 tests | Gemini 3.1 Flash Lite speed / latency 179 tok/s / 1599ms input / output No data | Gemini 3.1 Pro speed / latency 83 tok/s / 20273ms input / output No data |
|---|
TradingBase API10 tests | Gemini 3.1 Flash Lite speed / latency N/A / N/A input / output No data | Gemini 3.1 Pro speed / latency 102 tok/s / 12933ms input / output No data |
|---|
91VIP5 tests | Gemini 3.1 Flash Lite speed / latency 120 tok/s / 11321ms input / output No data | Gemini 3.1 Pro speed / latency N/A / N/A input / output No data |
|---|
AIHubMix5 tests | Gemini 3.1 Flash Lite speed / latency N/A / N/A input / output No data | Gemini 3.1 Pro speed / latency 70 tok/s / 25059ms input / output No data |
|---|
Gemini 3.1 Flash Lite gemini-3.1-flash-lite-preview speed / latency No data input / output $0/M / $0/M | Gemini 3.1 Pro gemini-3.1-pro-preview speed / latency No data input / output $1.00/M / $1.00/M |
Gemini 3.1 Flash Lite gemini-3.1-flash-lite-preview speed / latency No data input / output $0.0001/M / $0.0001/M | Gemini 3.1 Pro gemini-3.1-pro-preview speed / latency No data input / output $0.0001/M / $0.0001/M |
Gemini 3.1 Flash Lite gemini-3.1-flash-lite-preview-c speed / latency No data input / output $0.0035/M / $0.0035/M | Gemini 3.1 Pro gemini-3.1-pro-preview speed / latency No data input / output $2.00/M / $12.00/M |
Gemini 3.1 Flash Lite gemini-3.1-flash-lite speed / latency No data input / output $0.103/M / $0.411/M | Gemini 3.1 Pro gemini-3.1-pro-preview speed / latency No data input / output $0.0041/M / $0.0041/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
