Data points: 116
Model compare
The readout for Gemini 3 Flash and GPT-5.2, before the detailed comparison sheet.
Weighted outcome: GPT-5.2. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5.2
GPT-5.2 has the higher weighted result; Model A / B score 6 to 94.
Evidence depth
116 data points
Includes 26 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.2
The charts below split 33 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 Flash and GPT-5.2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Gemini 3 Flash | GPT-5.2 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 6.0 pts | 94.0 pts |
| Benchmark category leads | 0 categories | 6 categories |
| Operational advantages | Average speed | First-token latency, Free providers, Provider coverage |
| Context window | 1.0M tokens | 400K tokens |
| Max output | 65.5K tokens | 128K tokens |
| Modalities | Input TextImageFileAudiovideo |
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 Flash | GPT-5.2 |
|---|---|---|
| Developer | OpenAI | |
| Released | Dec 2025 | Dec 2025 |
| Parameters | No data | No data |
| Tokenizer | Gemini | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | google/gemini-3-flash-preview | openai/gpt-5.2 |
| References | No data | No data |
This report only uses LMSpeed data for Gemini 3 Flash and GPT-5.2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Gemini 3 Flash
Gemini 3 Flash has these operational advantages: Average speed.
GPT-5.2
GPT-5.2 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (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 Flash
50.1
Avg. score
GPT-5.2
52.9
GPT-5.2 leads by 5.3
GPT-5.2 leads by 2.6
GPT-5.2 leads by 2.2
GPT-5.2 leads by 5.4
GPT-5.2 leads by 4.0
No data
GPT-5.2
GPT-5.2 leads by 6.9
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Gemini 3 Flash
winner57.0
Rank #38/84 · confidence 1 · eval date 2025-12-01
GPT-5.2
53.0
Rank #50/84 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
winner$0.500/M
Rank #69/162 · confidence 4
GPT-5.2
$1.75/M
Rank #120/162 · confidence 4
Gemini 3 Flash
winner$1.13/M
Rank #81/162 · confidence 4
GPT-5.2
$4.81/M
Rank #132/162 · confidence 4
Gemini 3 Flash
winner$3.00/M
Rank #85/162 · confidence 4
GPT-5.2
$14.00/M
Rank #133/162 · confidence 4
Gemini 3 Flash
winner88.2%
Rank #7/125 · confidence 4
GPT-5.2
81.4%
Rank #54/125 · confidence 4
Gemini 3 Flash
48.0
Rank #68/89 · confidence 1 · eval date 2025-12-01
GPT-5.2
winner72.7
Rank #13/89 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
1.4
Rank #50/73 · confidence 1 · eval date 2025-12-01
GPT-5.2
winner11.6
Rank #20/73 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
winner81.2%
Rank #72/188 · confidence 4
GPT-5.2
71.2%
Rank #110/188 · confidence 4
Gemini 3 Flash
winner14.1%
Rank #76/187 · confidence 4
GPT-5.2
7.3%
Rank #109/187 · confidence 4
Gemini 3 Flash
20.2
Rank #21/33 · confidence 1 · eval date 2025-12-01
GPT-5.2
winner53.5
Rank #6/33 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
49.9
Rank #23/96 · confidence 1 · eval date 2025-12-01
GPT-5.2
winner52.1
Rank #18/96 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
winner49.9%
Rank #18/185 · confidence 4
GPT-5.2
40.4%
Rank #64/185 · confidence 4
Gemini 3 Flash
winner79.7%
Rank #19/115 · confidence 4
GPT-5.2
66.9%
Rank #36/115 · confidence 4
Gemini 3 Flash
35.6
Rank #16/47 · confidence 1 · eval date 2025-12-01
GPT-5.2
winner40.7
Rank #10/47 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
4.2
Rank #23/35 · confidence 1 · eval date 2025-12-01
GPT-5.2
winner18.8
Rank #11/35 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
50.5
Rank #29/56 · confidence 1 · eval date 2025-12-01
GPT-5.2
winner58.5
Rank #24/56 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
winner90.2
Rank #11/90 · confidence 1 · eval date 2025-12-01
GPT-5.2
79.7
Rank #39/90 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
winner45.5
Rank #14/90 · confidence 1 · eval date 2025-12-01
GPT-5.2
43.8
Rank #16/90 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
81.2
Rank #59/96 · confidence 1 · eval date 2025-12-01
GPT-5.2
winner90.3
Rank #19/96 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
14.1
Rank #62/96 · confidence 1 · eval date 2025-12-01
GPT-5.2
winner35.4
Rank #21/96 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
27.4
Rank #62/99 · confidence 1 · eval date 2025-12-01
GPT-5.2
winner42.2
Rank #22/99 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
winner1221.0
Rank #34/66 · confidence 1 · eval date 2025-12-01
GPT-5.2
1219.0
Rank #35/66 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
55.1
Rank #56/86 · confidence 1 · eval date 2025-12-01
GPT-5.2
winner75.4
Rank #21/86 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
11.4
Rank #17/20 · confidence 1 · eval date 2025-12-01
GPT-5.2
winner34.3
Rank #7/20 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
winner56.6
Rank #16/50 · confidence 1 · eval date 2025-12-01
GPT-5.2
46.5
Rank #29/50 · confidence 3 · eval date 2025-12-11
Gemini 3 Flash
43.3
Rank #70/84 · confidence 1 · eval date 2025-12-01
GPT-5.2
winner84.8
Rank #44/84 · confidence 3 · eval date 2025-12-11
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 3 Flash | GPT-5.2 |
|---|---|---|
| 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 Flash | GPT-5.2 |
|---|---|---|
35 tests | Gemini 3 Flash speed / latency 157 tok/s / 7994ms input / output No data | GPT-5.2 speed / latency 56 tok/s / 1798ms input / output No data |
30 tests | Gemini 3 Flash speed / latency 129 tok/s / 10293ms input / output No data | GPT-5.2 speed / latency N/A / N/A input / output No data |
15 tests | Gemini 3 Flash speed / latency 160 tok/s / 6933ms input / output No data | GPT-5.2 speed / latency 55 tok/s / 1434ms input / output No data |
10 tests | Gemini 3 Flash speed / latency 162 tok/s / 5569ms input / output No data | GPT-5.2 speed / latency 45 tok/s / 1716ms input / output No data |
10 tests | Gemini 3 Flash speed / latency 118 tok/s / 9594ms input / output No data | GPT-5.2 speed / latency N/A / N/A input / output No data |
Gemini 3 Flash gemini-3-flash-preview speed / latency No data input / output $0/M/$0/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0/M | |
Gemini 3 Flash gemini-3-flash-preview speed / latency No data input / output $0/request | GPT-5.2 gpt-5.2 speed / latency No data input / output $0/request |
Weighted outcome: GPT-5.2. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Output
Input FileImageText Output Text |
| Features | Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
