Data points: 81
The readout for Gemini 2.5 Flash and GPT-5.2, before the detailed comparison sheet.
Decision read
Tie
Tie currently has the stronger profile, with verified wins split 3 to 3.
Evidence depth
81 data points
Includes 8 benchmark rows, 0 audit samples, and 9 provider examples.
Selection signal
Tie
The charts below split 17 high-signal samples across speed, scores, and audit health.
Model compare Gemini 2.5 Flash vs GPT-5.2gemini-2-5-flash-vs-gpt-5-2 | Model A Gemini 2.5 Flash | Model B GPT-5.2 |
|---|---|---|
| Overall leader | Tie | Tie |
| Verified metric wins | 3 wins | 3 wins |
| Where it leads | Cheapest input price, Average speed, Recent tests | First-token latency, Free providers, Provider coverage |
| Model metadata | Gemini 2.5 Flash exposes 1.0M tokens; notable signals: Text input, Image input, File input, Audio input. | GPT-5.2 exposes 128K tokens; notable signals: Text input, Image input, File input, Text output. |
| Developer | OpenAI | |
| Context window | 1.0M tokens | 128K tokens |
| Max output | 65.5K tokens | 16.4K tokens |
| Released | Jun 2025 | Dec 2025 |
| Modalities | Input FileImageTextAudiovideo Output Text | Input FileImageText Output Text |
| Features | Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode |
| 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-chat |
| References | No data | No data |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Gemini 2.5 Flash | GPT-5.2 |
|---|---|---|
| LiveCodeBench | 49.5%#56 | 88.9%#4 |
| MMLU-Pro | 80.9%#34 | 87.4%#6 |
| GPQA | 68.3%#83 | 90.3%#9 |
| HLE | 5.1%#86 | 35.4%#9 |
| SciCode | 29.1%#93 | 52.1%#9 |
| Time to first answer token | 0.54 s#10 | 115.69 s#109 |
| Output speed | 194.9 tok/s#13 | 72.8 tok/s#71 |
| Time to first token | 0.54 s#14 | 115.69 s#108 |
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 |
|---|---|---|
SWT-API25 tests | Gemini 2.5 Flash gemini-2.5-flash speed / latency 139 tok/s / 4002ms input / output $0.0001/M / $0.0013/M | GPT-5.2 gpt-5.2-chat speed / latency N/A / N/A input / output $0.037/M / $0.300/M |
N1N20 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 |
CatClaw API10 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 |
OpenRouter10 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 |
PackyAPI10 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 $0.0001/M / $0.0013/M | GPT-5.2 gpt-5.2-chat speed / latency No data input / output $0.037/M / $0.300/M | |
Gemini 2.5 Flash gemini-2.5-flash-c speed / latency No data input / output $0.0050/M / $0.0050/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.300/M / $2.40/M | |
Gemini 2.5 Flash gemini-2.5-flash-preview-04-17 speed / latency No data input / output $0.0082/M / $0.033/M | GPT-5.2 gpt-5.2-medium speed / latency No data input / output $0.024/M / $0.192/M | |
Gemini 2.5 Flash gemini-2.5-flash-preview-09-2025 speed / latency No data input / output $0.010/M / $0.010/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.050/M / $0.050/M |
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.
| Guidance | Gemini 2.5 Flash | GPT-5.2 |
|---|---|---|
| When to choose each model | Gemini 2.5 Flash Gemini 2.5 Flash is stronger when you prioritize Cheapest input price, Average speed, Recent tests. | GPT-5.2 GPT-5.2 is stronger when you prioritize First-token latency, Free providers, Provider coverage. |
TL;DR: Tie leads across 81 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Gemini 2.5 Flash 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.
