Data points: 108
Model compare
The readout for Gemini 3 Pro and GPT-5.1, before the detailed comparison sheet.
Weighted outcome: Gemini 3 Pro. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Gemini 3 Pro
Gemini 3 Pro has the higher weighted result; Model A / B score 66.7 to 33.3.
Evidence depth
108 data points
Includes 26 benchmark rows, 0 audit samples, and 6 provider examples.
Selection signal
Start with Gemini 3 Pro
The charts below split 32 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 Pro and GPT-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Gemini 3 Pro | GPT-5.1 |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 66.7 pts | 33.3 pts |
| Benchmark category leads | 5 categories | 1 categories |
| Operational advantages | No data | Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage |
| Context window | No data | 400K tokens |
| Max output | No data | 128K tokens |
| Modalities | No data | Input ImageTextFile 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 Pro | GPT-5.1 |
|---|---|---|
| Developer | OpenAI | |
| Released | No data | Nov 2025 |
| Parameters | No data | No data |
| Tokenizer | No data | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | No data | openai/gpt-5.1 |
| References | No data | No data |
This report only uses LMSpeed data for Gemini 3 Pro and GPT-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Gemini 3 Pro
Gemini 3 Pro leads these benchmark categories: Agents, Coding, Reasoning, Knowledge, Math.
GPT-5.1
GPT-5.1 is stronger in benchmark categories (Instruction following) and operational dimensions (Cheapest input price, Average speed, First-token latency, 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 Pro
53.8
Avg. score
GPT-5.1
52
Gemini 3 Pro leads by 1.3
Gemini 3 Pro leads by 6.7
Gemini 3 Pro leads by 1.9
Gemini 3 Pro leads by 2.2
Gemini 3 Pro leads by 1.7
Gemini 3 Pro
Gemini 3 Pro
GPT-5.1 leads by 0.9
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Gemini 3 Pro
winner57.0
Rank #38/84 · confidence 2 · eval date 2025-11-18
GPT-5.1
56.0
Rank #41/84 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
$2.00/M
Rank #123/162 · confidence 4
GPT-5.1
winner$1.25/M
Rank #107/162 · confidence 4
Gemini 3 Pro
$4.50/M
Rank #130/162 · confidence 4
GPT-5.1
winner$3.44/M
Rank #117/162 · confidence 4
Gemini 3 Pro
$12.00/M
Rank #130/162 · confidence 4
GPT-5.1
winner$10.00/M
Rank #120/162 · confidence 4
Gemini 3 Pro
winner89.5%
Rank #2/125 · confidence 4
GPT-5.1
87.0%
Rank #12/125 · confidence 4
Gemini 3 Pro
70.7
Rank #16/89 · confidence 2 · eval date 2025-11-18
GPT-5.1
winner75.0
Rank #3/89 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner9.1
Rank #24/73 · confidence 2 · eval date 2025-11-18
GPT-5.1
4.9
Rank #34/73 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner88.7%
Rank #29/188 · confidence 4
GPT-5.1
87.3%
Rank #33/188 · confidence 4
Gemini 3 Pro
winner27.6%
Rank #37/187 · confidence 4
GPT-5.1
26.5%
Rank #40/187 · confidence 4
Gemini 3 Pro
85.7%
Rank #7/115 · confidence 4
GPT-5.1
winner86.8%
Rank #4/115 · confidence 4
Gemini 3 Pro
winner56.1
Rank #5/96 · confidence 2 · eval date 2025-11-18
GPT-5.1
43.3
Rank #45/96 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner49.9%
Rank #18/185 · confidence 4
GPT-5.1
43.3%
Rank #42/185 · confidence 4
Gemini 3 Pro
14.3
Rank #26/33 · confidence 2 · eval date 2025-11-18
GPT-5.1
winner24.6
Rank #18/33 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner18.8
Rank #12/35 · confidence 2 · eval date 2025-11-18
GPT-5.1
12.5
Rank #16/35 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner37.6
Rank #14/47 · confidence 2 · eval date 2025-11-18
GPT-5.1
31.0
Rank #19/47 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner56.3
Rank #26/56 · confidence 2 · eval date 2025-11-18
GPT-5.1
49.9
Rank #30/56 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner55.9
Rank #4/90 · confidence 2 · eval date 2025-11-18
GPT-5.1
37.6
Rank #31/90 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner90.9
Rank #9/90 · confidence 2 · eval date 2025-11-18
GPT-5.1
51.3
Rank #65/90 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner15.8
Rank #11/29 · confidence 2 · eval date 2025-11-18
GPT-5.1
5.6
Rank #19/29 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner37.2
Rank #16/96 · confidence 2 · eval date 2025-11-18
GPT-5.1
26.5
Rank #39/96 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner90.8
Rank #18/96 · confidence 2 · eval date 2025-11-18
GPT-5.1
87.3
Rank #36/96 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner39.5
Rank #33/99 · confidence 2 · eval date 2025-11-18
GPT-5.1
36.9
Rank #42/99 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner80.2
Rank #8/57 · confidence 2 · eval date 2025-11-18
GPT-5.1
75.5
Rank #23/57 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
70.4
Rank #36/86 · confidence 2 · eval date 2025-11-18
GPT-5.1
winner72.9
Rank #30/86 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner63.2
Rank #7/50 · confidence 2 · eval date 2025-11-18
GPT-5.1
41.2
Rank #35/50 · confidence 1 · eval date 2025-11-13
Gemini 3 Pro
winner87.1
Rank #37/84 · confidence 2 · eval date 2025-11-18
GPT-5.1
81.9
Rank #52/84 · confidence 1 · eval date 2025-11-13
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 3 Pro | GPT-5.1 |
|---|---|---|
| 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 Pro | GPT-5.1 |
|---|---|---|
20 tests | Gemini 3 Pro speed / latency 83 tok/s / 14822ms input / output No data | GPT-5.1 speed / latency 96 tok/s / 1862ms input / output No data |
5 tests | Gemini 3 Pro speed / latency 107 tok/s / 15729ms input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
5 tests | Gemini 3 Pro speed / latency 85 tok/s / 12067ms input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
5 tests | Gemini 3 Pro speed / latency 13 tok/s / 3360ms input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
5 tests | Gemini 3 Pro speed / latency 16 tok/s / 1749ms input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
Gemini 3 Pro gemini-3-pro-preview speed / latency No data input / output $0/request | GPT-5.1 gpt-5.1-all speed / latency No data input / output $0/request |
Weighted outcome: Gemini 3 Pro. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
| Features | None listed | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
