Data points: 72
The readout for Gemini 3 Pro and GPT-5.2, before the detailed comparison sheet.
Decision read
GPT-5.2
GPT-5.2 currently has the stronger profile, with verified wins split 2 to 4.
Evidence depth
72 data points
Includes 8 benchmark rows, 0 audit samples, and 9 provider examples.
Selection signal
Start with GPT-5.2
The charts below split 17 high-signal samples across speed, scores, and audit health.
Model compare Gemini 3 Pro vs GPT-5.2gemini-3-pro-vs-gpt-5-2 | Model A Gemini 3 Pro | Model B GPT-5.2 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 2 wins | 4 wins |
| Where it leads | Cheapest input price, Average speed | First-token latency, Free providers, Provider coverage, Recent tests |
| Model metadata | No OpenRouter metadata is available yet for this model. | GPT-5.2 exposes 128K tokens; notable signals: Text input, Image input, File input, Text output. |
| Developer | OpenAI | |
| Context window | No data | 128K tokens |
| Max output | No data | 16.4K tokens |
| Released | No data | Dec 2025 |
| Modalities | No data | Input FileImageText Output Text |
| Features | None listed | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | No data | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | No data | openai/gpt-5.2-chat |
| References | No data | No data |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Gemini 3 Pro | GPT-5.2 |
|---|---|---|
| LiveCodeBench | 91.7%#1 | 88.9%#4 |
| MMLU-Pro | 89.8%#1 | 87.4%#6 |
| SciCode | 56.1%#4 | 52.1%#9 |
| GPQA | 90.8%#7 | 90.3%#9 |
| HLE | 37.2%#7 | 35.4%#9 |
| Input price | $2.00/M#36 | $1.75/M#35 |
| Output price | $12.00/M#42 | $14.00/M#43 |
| Blended price | $4.50/M#61 | $4.81/M#62 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 3 Pro | 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 Pro | GPT-5.2 |
|---|---|---|
N1N30 tests | Gemini 3 Pro speed / latency 83 tok/s / 14822ms input / output No data | GPT-5.2 speed / latency 56 tok/s / 1798ms input / output No data |
PackyAPI10 tests | Gemini 3 Pro speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 94 tok/s / 11492ms input / output No data |
Rnglg2 API10 tests | Gemini 3 Pro speed / latency 85 tok/s / 12067ms input / output No data | GPT-5.2 speed / latency 55 tok/s / 1434ms input / output No data |
theoldllm-api-pro10 tests | Gemini 3 Pro speed / latency 97 tok/s / 4446ms input / output No data | GPT-5.2 speed / latency 48 tok/s / 1543ms input / output No data |
小水管 API10 tests | Gemini 3 Pro speed / latency 16 tok/s / 1749ms input / output No data | GPT-5.2 speed / latency 71 tok/s / 2893ms input / output No data |
Gemini 3 Pro gemini-3-pro-preview speed / latency No data input / output $0.0048/M / $0.0048/M | GPT-5.2 gpt-5.2-chat-2025-12-11 speed / latency No data input / output $10.27/M / $10.27/M | |
Gemini 3 Pro gemini-3-pro-preview speed / latency No data input / output $0.014/M / $0.014/M | GPT-5.2 gpt-5.2-openai-compact speed / latency No data input / output $10.27/M / $10.27/M | |
Gemini 3 Pro gemini-3-pro-preview speed / latency No data input / output $0.015/M / $0.988/M | GPT-5.2 gpt-5.2(xhigh) speed / latency No data input / output $0.041/M / $0.329/M | |
Gemini 3 Pro gemini-3-pro-preview-c speed / latency No data input / output $0.018/M / $0.018/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.300/M / $2.40/M |
This report only uses LMSpeed data for Gemini 3 Pro and GPT-5.2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Gemini 3 Pro | GPT-5.2 |
|---|---|---|
| When to choose each model | Gemini 3 Pro Gemini 3 Pro is stronger when you prioritize Cheapest input price, Average speed. | GPT-5.2 GPT-5.2 is stronger when you prioritize First-token latency, Free providers, Provider coverage, Recent tests. |
TL;DR: GPT-5.2 leads across 72 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Gemini 3 Pro vs GPT-5.2 into nearby model comparisons with enough verified LMSpeed data.
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
