Data points: 119
The readout for GPT-5.2 and O3 Mini, before the detailed comparison sheet.
Decision read
GPT-5.2
GPT-5.2 currently has the stronger profile, with verified wins split 5 to 1.
Evidence depth
119 data points
Includes 27 benchmark rows, 0 audit samples, and 10 provider examples.
Selection signal
Start with GPT-5.2
The charts below split 37 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.
Model compare GPT-5.2 vs O3 Minigpt-5-2-vs-o3-mini | Model A GPT-5.2 | Model B O3 Mini |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 5 wins | 1 wins |
| Where it leads | Cheapest input price, First-token latency, Free providers, Provider coverage, Recent tests |
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
GPT-5.2
66.1
Avg. score
O3 Mini
59.2
Selected category
Agents
GPT-5.2 leads by 32.2
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-5.2
winner78.0
Rank #16/82 · confidence 2 · eval date 2025-12-11
O3 Mini
55.0
Rank #43/82 · confidence 1 · eval date 2025-01-31
GPT-5.2
73.9 tok/s
Rank #44/78 · confidence 4
O3 Mini
winner224.5 tok/s
Rank #4/78 · confidence 4
GPT-5.2
114.88 s
Rank #77/78 · confidence 4
O3 Mini
winner15.30 s
Rank #48/78 · confidence 4
GPT-5.2
114.88 s
Rank #77/78 · confidence 4
O3 Mini
winner15.30 s
Rank #65/78 · confidence 4
GPT-5.2
$14.00/M
Rank #75/95 · confidence 4
O3 Mini
winner$4.40/M
Rank #56/95 · confidence 4
GPT-5.2
$4.81/M
Rank #75/95 · confidence 4
O3 Mini
winner$1.93/M
Rank #57/95 · confidence 4
GPT-5.2
$1.75/M
Rank #69/95 · confidence 4
O3 Mini
winner$1.10/M
Rank #58/95 · confidence 4
GPT-5.2
winner87.4%
Rank #7/74 · confidence 4
O3 Mini
80.2%
Rank #42/74 · confidence 4
GPT-5.2
winner83.5
Rank #9/57 · confidence 2 · eval date 2025-12-11
O3 Mini
68.0
Rank #19/57 · confidence 1 · eval date 2025-01-31
GPT-5.2
winner90.3%
Rank #11/103 · confidence 4
O3 Mini
77.3%
Rank #54/103 · confidence 4
GPT-5.2
winner35.4%
Rank #11/103 · confidence 4
O3 Mini
12.3%
Rank #52/103 · confidence 4
GPT-5.2
winner88.9%
Rank #3/70 · confidence 4
O3 Mini
73.4%
Rank #23/70 · confidence 4
GPT-5.2
winner80.0
Rank #7/28 · confidence 2 · eval date 2025-12-11
O3 Mini
49.3
Rank #26/28 · confidence 1 · eval date 2025-01-31
GPT-5.2
winner52.1
Rank #8/63 · confidence 2 · eval date 2025-12-11
O3 Mini
39.9
Rank #39/63 · confidence 1 · eval date 2025-01-31
GPT-5.2
winner48.7
Rank #9/61 · confidence 2 · eval date 2025-12-11
O3 Mini
17.9
Rank #54/61 · confidence 1 · eval date 2025-01-31
GPT-5.2
winner52.1%
Rank #9/101 · confidence 4
O3 Mini
39.8%
Rank #49/101 · confidence 4
GPT-5.2
winner47.0
Rank #10/59 · confidence 2 · eval date 2025-12-11
O3 Mini
6.8
Rank #54/59 · confidence 1 · eval date 2025-01-31
GPT-5.2
winner78.1
Rank #18/69 · confidence 2 · eval date 2025-12-11
O3 Mini
48.5
Rank #45/69 · confidence 1 · eval date 2025-01-31
GPT-5.2
winner90.3
Rank #8/63 · confidence 2 · eval date 2025-12-11
O3 Mini
74.8
Rank #44/63 · confidence 1 · eval date 2025-01-31
GPT-5.2
winner35.4
Rank #8/63 · confidence 2 · eval date 2025-12-11
O3 Mini
8.7
Rank #42/63 · confidence 1 · eval date 2025-01-31
GPT-5.2
winner90.5
Rank #8/67 · confidence 2 · eval date 2025-12-11
O3 Mini
60.7
Rank #36/67 · confidence 1 · eval date 2025-01-31
GPT-5.2
winner42.2
Rank #9/66 · confidence 2 · eval date 2025-12-11
O3 Mini
19.0
Rank #51/66 · confidence 1 · eval date 2025-01-31
GPT-5.2
winner95.9
Rank #6/50 · confidence 2 · eval date 2025-12-11
O3 Mini
44.8
Rank #35/50 · confidence 1 · eval date 2025-01-31
GPT-5.2
winner81.5
Rank #11/60 · confidence 2 · eval date 2025-12-11
O3 Mini
65.6
Rank #26/60 · confidence 1 · eval date 2025-01-31
GPT-5.2
84.9
Rank #14/56 · confidence 2 · eval date 2025-12-11
O3 Mini
winner85.3
Rank #13/56 · confidence 1 · eval date 2025-01-31
GPT-5.2
winner84.8
Rank #22/58 · confidence 2 · eval date 2025-12-11
O3 Mini
28.7
Rank #51/58 · confidence 1 · eval date 2025-01-31
GPT-5.2
59.7
Rank #27/69 · confidence 2 · eval date 2025-12-11
O3 Mini
winner60.6
Rank #24/69 · confidence 1 · eval date 2025-01-31
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.2 | O3 Mini |
|---|---|---|
| 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 | GPT-5.2 | O3 Mini |
|---|---|---|
25 tests | GPT-5.2 speed / latency N/A / N/A input / output No data | O3 Mini |
This report only uses LMSpeed data for GPT-5.2 and O3 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.2 | O3 Mini |
|---|---|---|
| When to choose each model | GPT-5.2 GPT-5.2 is stronger when you prioritize Cheapest input price, First-token latency, Free providers, Provider coverage, Recent tests. | O3 Mini O3 Mini is stronger when you prioritize Average speed. |
TL;DR: GPT-5.2 leads across 119 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.2 vs O3 Mini into nearby model comparisons with enough verified LMSpeed data.
| Average speed |
| Model metadata | GPT-5.2 exposes 128K tokens; notable signals: Text input, Image input, File input, Text output. | O3 Mini exposes 200K tokens; notable signals: Text input, File input, Text output, Tool calling. |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Context window | 128K tokens | 200K tokens |
| Max output | 16.4K tokens | 100K tokens |
| Released | Dec 2025 | Feb 2025 |
| Modalities | Input FileImageText Output Text | Input TextFile Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode | Text inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | No data | 2023-10-31 |
| OpenRouter ID | openai/gpt-5.2-chat | openai/o3-mini-high |
| References | No data | No data |
speed / latency
66 tok/s / 6491ms
input / output
No data
N1N20 tests | GPT-5.2 speed / latency 56 tok/s / 1798ms input / output No data | O3 Mini speed / latency 117 tok/s / 4809ms input / output No data |
|---|
ZetaTechs API6 tests | GPT-5.2 speed / latency N/A / N/A input / output No data | O3 Mini speed / latency 44 tok/s / 17418ms input / output No data |
|---|
BUZZ5 tests | GPT-5.2 speed / latency 64 tok/s / 3553ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
|---|
Rnglg2 API5 tests | GPT-5.2 speed / latency 55 tok/s / 1434ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
|---|
GPT-5.2 gpt-5.2 speed / latency No data input / output $0.0027/M / $0.0027/M | O3 Mini o3-mini-2025-01-31 speed / latency No data input / output $0.151/M / $0.603/M |
GPT-5.2 gpt-5.2-all speed / latency No data input / output $0.0068/M / $0.0068/M | O3 Mini o3-mini-medium speed / latency No data input / output $0.151/M / $0.603/M |
GPT-5.2 gpt-5.2-all speed / latency No data input / output $0.0068/M / $0.0068/M | O3 Mini o3-mini-medium speed / latency No data input / output $0.151/M / $0.603/M |
GPT-5.2 gpt-5.2-all speed / latency No data input / output $0.010/M / $0.010/M | O3 Mini o3-mini-medium speed / latency No data input / output $0.226/M / $0.904/M |
GPT-5.2 gpt-5.2 speed / latency No data input / output $0.014/M / $0.014/M | O3 Mini o3-mini-high-all speed / latency No data input / output $10.27/M / $41.10/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
