Data points: 81
The readout for Gemini 2.5 Flash Lite 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 8 provider examples.
Selection signal
Tie
The charts below split 16 high-signal samples across speed, scores, and audit health.
Model compare Gemini 2.5 Flash Lite vs GPT-5.2gemini-2-5-flash-lite-vs-gpt-5-2 | Model A Gemini 2.5 Flash Lite | Model B GPT-5.2 |
|---|---|---|
| Overall leader | Tie | Tie |
| Verified metric wins | 3 wins | 3 wins |
| Where it leads | Average speed, First-token latency, Recent tests | Cheapest input price, Free providers, Provider coverage |
| Model metadata | Gemini 2.5 Flash Lite 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 | Sep 2025 | Dec 2025 |
| Modalities | Input TextImageFileAudiovideo 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-lite-preview-09-2025 | 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 Lite | GPT-5.2 |
|---|---|---|
| Time to first answer token | 0.37 s#2 | 115.69 s#109 |
| Time to first token | 0.37 s#3 | 115.69 s#108 |
| LiveCodeBench | 40.0%#68 | 88.9%#4 |
| Input price | $0.100/M#6 | $1.75/M#35 |
| MMLU-Pro | 72.4%#63 | 87.4%#6 |
| Output price | $0.400/M#6 | $14.00/M#43 |
| Output speed | 229.0 tok/s#7 | 72.8 tok/s#71 |
| GPQA | 47.4%#122 | 90.3%#9 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 2.5 Flash Lite | 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 Lite | GPT-5.2 |
|---|---|---|
SkyAI60 tests | Gemini 2.5 Flash Lite speed / latency 276 tok/s / 1323ms input / output No data | GPT-5.2 speed / latency N/A / N/A input / output No data |
Rnglg2 API35 tests | Gemini 2.5 Flash Lite speed / latency 235 tok/s / 2518ms input / output No data | GPT-5.2 speed / latency 55 tok/s / 1434ms input / output No data |
N1N20 tests | Gemini 2.5 Flash Lite speed / latency 298 tok/s / 524ms input / output No data | GPT-5.2 speed / latency 56 tok/s / 1798ms input / output No data |
GankInterview LLM15 tests | Gemini 2.5 Flash Lite speed / latency 262 tok/s / 904ms input / output No data | GPT-5.2 speed / latency N/A / N/A input / output No data |
WSocket AI15 tests | Gemini 2.5 Flash Lite speed / latency 209 tok/s / 1627ms input / output No data | GPT-5.2 speed / latency 54 tok/s / 1449ms input / output No data |
Gemini 2.5 Flash Lite gemini-2.5-flash-lite-c speed / latency No data input / output $0.0035/M / $0.0035/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.300/M / $2.40/M | |
Gemini 2.5 Flash Lite gemini-2.5-flash-lite-preview-09-2025 speed / latency No data input / output $0.0041/M / $0.016/M | GPT-5.2 gpt-5.2-xhigh speed / latency No data input / output $0.072/M / $0.575/M | |
Gemini 2.5 Flash Lite gemini-2.5-flash-lite-nothinking speed / latency No data input / output $0.0086/M / $0.034/M | GPT-5.2 gpt-5.2-chat-latest speed / latency No data input / output $0.150/M / $1.20/M |
This report only uses LMSpeed data for Gemini 2.5 Flash Lite and GPT-5.2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Gemini 2.5 Flash Lite | GPT-5.2 |
|---|---|---|
| When to choose each model | Gemini 2.5 Flash Lite Gemini 2.5 Flash Lite is stronger when you prioritize Average speed, First-token latency, Recent tests. | GPT-5.2 GPT-5.2 is stronger when you prioritize Cheapest input price, 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 Lite 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.
