Data points: 119
Model compare
The readout for Gemini 3.1 Flash Lite and Gemini 3.1 Pro, before the detailed comparison sheet.
Weighted outcome: Gemini 3.1 Pro. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Gemini 3.1 Pro
Gemini 3.1 Pro has the higher weighted result; Model A / B score 21.3 to 78.7.
Evidence depth
119 data points
Includes 20 benchmark rows, 3 audit samples, and 8 provider examples.
Selection signal
Start with Gemini 3.1 Pro
The charts below split 31 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.
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.
| Model compare | Gemini 3.1 Flash Lite | Gemini 3.1 Pro |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 21.3 pts | 78.7 pts |
| Benchmark category leads | 1 categories | 5 categories |
| Operational advantages | Average speed, First-token latency | Cheapest input price, Free providers, Provider coverage |
| Context window | 1.0M tokens | 1.0M tokens |
| Max output | 65.5K tokens | 65.5K tokens |
| Modalities | Input TextImagevideoFileAudio Output Text |
The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.
| Model compare | Gemini 3.1 Flash Lite | Gemini 3.1 Pro |
|---|---|---|
| Developer | ||
| Released | May 2026 | Feb 2026 |
| 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 |
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.
Gemini 3.1 Flash Lite
Gemini 3.1 Flash Lite is stronger in benchmark categories (Instruction following) and operational dimensions (Average speed, First-token latency).
Gemini 3.1 Pro
Gemini 3.1 Pro is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Multimodal) and operational dimensions (Cheapest input price, Free providers, Provider coverage).
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 Flash Lite
46.7
Avg. score
Gemini 3.1 Pro
56.6
Gemini 3.1 Pro leads by 8.3
Gemini 3.1 Pro leads by 18.4
Gemini 3.1 Pro leads by 5.6
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Gemini 3.1 Flash Lite
55.0
Rank #47/84 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner71.0
Rank #12/84 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
1.1
Rank #54/73 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner17.7
Rank #12/73 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
65.3
Rank #44/89 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner72.7
Rank #13/89 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
41.9
Rank #51/96 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner58.9
Rank #2/96 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
34.7
Rank #42/59 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner68.8
Rank #13/59 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
82.2
Rank #55/96 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner94.1
Rank #1/96 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
16.2
Rank #58/96 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner44.7
Rank #4/96 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
36.4
Rank #34/90 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner55.3
Rank #5/90 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
25.0
Rank #65/99 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner46.5
Rank #14/99 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
winner81.6
Rank #34/90 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
49.9
Rank #68/90 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
75.5
Rank #23/57 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner82.4
Rank #3/57 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
48.9
Rank #30/35 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner81.9
Rank #6/35 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
73.2
Rank #19/22 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner80.2
Rank #14/22 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
winner77.2
Rank #9/86 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
77.1
Rank #10/86 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
12.2
Rank #19/24 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner32.0
Rank #9/24 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
38.5
Rank #41/50 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner56.9
Rank #14/50 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
31.3
Rank #73/84 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner95.6
Rank #15/84 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
6.2
Rank #45/55 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner21.4
Rank #35/55 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
7.3
Rank #45/50 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner23.2
Rank #37/50 · confidence 3 · eval date 2026-02-19
Gemini 3.1 Flash Lite
647.0
Rank #45/55 · confidence 1 · eval date 2026-03-03
Gemini 3.1 Pro
winner965.0
Rank #37/55 · confidence 3 · eval date 2026-02-19
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 Flash Lite | Gemini 3.1 Flash Lite gemini-3.1-flash-lite Audit score 89 1006886100 | Gemini 3.1 Pro gemini-3.1-pro-preview No audit yet |
Winner: Gemini 3.1 Pro | Gemini 3.1 Flash Lite gemini-3.1-flash-lite No audit yet | Gemini 3.1 Pro gemini-3.1-pro-preview Audit score 87 848480100 |
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 Audit score 79 698463100 |
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 |
|---|---|---|
25 tests | Gemini 3.1 Flash Lite speed / latency 218 tok/s / 4094ms input / output No data | Gemini 3.1 Pro speed / latency 101 tok/s / 15025ms input / output No data |
15 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 |
10 tests | Gemini 3.1 Flash Lite speed / latency N/A / N/A input / output No data | Gemini 3.1 Pro speed / latency 121 tok/s / 11404ms input / output No data |
10 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 |
5 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 |
Gemini 3.1 Flash Lite gemini-3.1-flash-lite-preview speed / latency No data input / output $0/request | Gemini 3.1 Pro gemini-3.1-pro-preview speed / latency No data input / output $1.00/request | |
Gemini 3.1 Flash Lite gemini-3.1-flash-lite 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 $0/M | |
Gemini 3.1 Flash Lite gemini-3.1-flash-lite-preview speed / latency No data input / output $0/request | Gemini 3.1 Pro gemini-3.1-pro-preview-all speed / latency No data input / output $0/request |
Weighted outcome: Gemini 3.1 Pro. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Input AudioFileImageTextvideo Output Text |
| Features | Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
Gemini 3.1 Pro leads by 9.3
Gemini 3.1 Pro
Gemini 3.1 Pro
Gemini 3.1 Pro leads by 16.5
Gemini 3.1 Flash Lite leads by 0.1
