Data points: 111
Model compare
The readout for Gemini 2.5 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 10 to 90.
Evidence depth
111 data points
Includes 23 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with GPT-5.2
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 2.5 Flash and GPT-5.2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Gemini 2.5 Flash | GPT-5.2 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 10.0 pts | 90.0 pts |
| Benchmark category leads | 0 categories | 6 categories |
| Operational advantages | Cheapest input price, Average speed | First-token latency, Provider coverage |
| Context window | 1.0M tokens | 400K tokens |
| Max output | 65.5K tokens | 128K tokens |
| Modalities | Input FileImageTextAudiovideo |
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 2.5 Flash | GPT-5.2 |
|---|---|---|
| Developer | OpenAI | |
| Released | Jun 2025 | Dec 2025 |
| Parameters | No data | No data |
| Tokenizer | Gemini | GPT |
| Knowledge cutoff | 2025-01-31 | No data |
| OpenRouter ID | google/gemini-2.5-flash | openai/gpt-5.2 |
| References | No data | No data |
This report only uses LMSpeed data for Gemini 2.5 Flash and GPT-5.2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Gemini 2.5 Flash
Gemini 2.5 Flash has these operational advantages: Cheapest input price, Average speed.
GPT-5.2
GPT-5.2 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (First-token latency, 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 2.5 Flash
45.4
Avg. score
GPT-5.2
52.9
GPT-5.2 leads by 12.0
GPT-5.2 leads by 5.5
GPT-5.2 leads by 5.1
GPT-5.2 leads by 15.1
GPT-5.2 leads by 5.1
No data
GPT-5.2
GPT-5.2 leads by 11.8
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Gemini 2.5 Flash
45.0
Rank #68/84 · confidence 1 · eval date 2025-06-17
GPT-5.2
winner53.0
Rank #50/84 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
winner$0.300/M
Rank #46/162 · confidence 4
GPT-5.2
$1.75/M
Rank #120/162 · confidence 4
Gemini 2.5 Flash
winner$0.850/M
Rank #67/162 · confidence 4
GPT-5.2
$4.81/M
Rank #132/162 · confidence 4
Gemini 2.5 Flash
winner$2.50/M
Rank #75/162 · confidence 4
GPT-5.2
$14.00/M
Rank #133/162 · confidence 4
Gemini 2.5 Flash
45.9
Rank #72/89 · confidence 1 · eval date 2025-06-17
GPT-5.2
winner72.7
Rank #13/89 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
1.4
Rank #50/73 · confidence 1 · eval date 2025-06-17
GPT-5.2
winner11.6
Rank #20/73 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
winner83.2%
Rank #40/125 · confidence 4
GPT-5.2
81.4%
Rank #54/125 · confidence 4
Gemini 2.5 Flash
winner79.0%
Rank #76/188 · confidence 4
GPT-5.2
71.2%
Rank #110/188 · confidence 4
Gemini 2.5 Flash
winner11.1%
Rank #89/187 · confidence 4
GPT-5.2
7.3%
Rank #109/187 · confidence 4
Gemini 2.5 Flash
29.1
Rank #88/96 · confidence 1 · eval date 2025-06-17
GPT-5.2
winner52.1
Rank #18/96 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
winner69.5%
Rank #30/115 · confidence 4
GPT-5.2
66.9%
Rank #36/115 · confidence 4
Gemini 2.5 Flash
39.4%
Rank #80/185 · confidence 4
GPT-5.2
winner40.4%
Rank #64/185 · confidence 4
Gemini 2.5 Flash
4.8
Rank #38/47 · confidence 1 · eval date 2025-06-17
GPT-5.2
winner40.7
Rank #10/47 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
4.2
Rank #23/35 · confidence 1 · eval date 2025-06-17
GPT-5.2
winner18.8
Rank #11/35 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
29.1
Rank #44/56 · confidence 1 · eval date 2025-06-17
GPT-5.2
winner58.5
Rank #24/56 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
winner93.3
Rank #6/90 · confidence 1 · eval date 2025-06-17
GPT-5.2
79.7
Rank #39/90 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
26.5
Rank #51/90 · confidence 1 · eval date 2025-06-17
GPT-5.2
winner43.8
Rank #16/90 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
68.3
Rank #76/96 · confidence 1 · eval date 2025-06-17
GPT-5.2
winner90.3
Rank #19/96 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
5.1
Rank #79/96 · confidence 1 · eval date 2025-06-17
GPT-5.2
winner35.4
Rank #21/96 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
14.1
Rank #86/99 · confidence 1 · eval date 2025-06-17
GPT-5.2
winner42.2
Rank #22/99 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
1140.0
Rank #55/66 · confidence 1 · eval date 2025-06-17
GPT-5.2
winner1219.0
Rank #35/66 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
39.0
Rank #74/86 · confidence 1 · eval date 2025-06-17
GPT-5.2
winner75.4
Rank #21/86 · confidence 3 · eval date 2025-12-11
Gemini 2.5 Flash
14.9
Rank #84/84 · confidence 1 · eval date 2025-06-17
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 2.5 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 2.5 Flash | GPT-5.2 |
|---|---|---|
25 tests | Gemini 2.5 Flash speed / latency 139 tok/s / 4002ms input / output No data | GPT-5.2 speed / latency N/A / N/A input / output No data |
20 tests | Gemini 2.5 Flash speed / latency 200 tok/s / 8207ms input / output No data | GPT-5.2 speed / latency 56 tok/s / 1798ms input / output No data |
10 tests | Gemini 2.5 Flash speed / latency 54 tok/s / 10365ms input / output No data | GPT-5.2 speed / latency N/A / N/A input / output No data |
10 tests | Gemini 2.5 Flash speed / latency 141 tok/s / 2052ms input / output No data | GPT-5.2 speed / latency N/A / N/A input / output No data |
10 tests | Gemini 2.5 Flash speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 94 tok/s / 11492ms input / output No data |
Gemini 2.5 Flash gemini-2.5-flash speed / latency No data input / output $0/M/$0/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.024/M | |
Gemini 2.5 Flash gemini-2.5-flash 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 2.5 Flash gemini-2.5-flash-preview-04-17 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 |
|---|
