Data points: 81
The readout for Gemini 3.1 Flash Lite and GPT-5, before the detailed comparison sheet.
Decision read
Gemini 3.1 Flash Lite
Gemini 3.1 Flash Lite currently has the stronger profile, with verified wins split 4 to 2.
Evidence depth
81 data points
Includes 8 benchmark rows, 0 audit samples, and 9 provider examples.
Selection signal
Start with Gemini 3.1 Flash Lite
The charts below split 17 high-signal samples across speed, scores, and audit health.
Model compare Gemini 3.1 Flash Lite vs GPT-5gemini-3-1-flash-lite-vs-gpt-5 | Model A Gemini 3.1 Flash Lite | Model B GPT-5 |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 2 wins |
| Where it leads | Cheapest input price, Average speed, First-token latency, Free providers |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Gemini 3.1 Flash Lite | GPT-5 |
|---|---|---|
| Output speed | 319.9 tok/s#3 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 3.1 Flash Lite | GPT-5 |
|---|---|---|
| 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 3.1 Flash Lite | GPT-5 |
|---|---|---|
20 tests | Gemini 3.1 Flash Lite speed / latency N/A / N/A input / output No data |
This report only uses LMSpeed data for Gemini 3.1 Flash Lite and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Gemini 3.1 Flash Lite | GPT-5 |
|---|---|---|
| When to choose each model | Gemini 3.1 Flash Lite Gemini 3.1 Flash Lite is stronger when you prioritize Cheapest input price, Average speed, First-token latency, Free providers. | GPT-5 GPT-5 is stronger when you prioritize Provider coverage, Recent tests. |
TL;DR: Gemini 3.1 Flash Lite leads across 81 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Gemini 3.1 Flash Lite vs GPT-5 into nearby model comparisons with enough verified LMSpeed data.
| Provider coverage, Recent tests |
| Model metadata | Gemini 3.1 Flash Lite exposes 1.0M tokens; notable signals: Text input, Image input, File input, Audio input. | GPT-5 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 | May 2026 | Aug 2025 |
| Modalities | Input TextImagevideoFileAudio Output Text | Input FileImageText Output Text |
| Features | Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | Gemini | GPT |
| Knowledge cutoff | No data | 2024-09-30 |
| OpenRouter ID | google/gemini-3.1-flash-lite | openai/gpt-5-chat |
| References | No data | No data |
| Input price | $0.250/M#12 | $1.25/M#30 |
|---|
| Output price | $1.50/M#20 | $10.00/M#41 |
|---|
| HLE | 16.2%#49 | 26.5%#24 |
|---|
| Blended price | $0.563/M#27 | $3.44/M#58 |
|---|
| GPQA | 82.2%#48 | 85.4%#31 |
|---|
| SciCode | 41.9%#37 | 42.9%#31 |
|---|
| Time to first answer token | 5.31 s#50 | 62.85 s#98 |
|---|
GPT-5
speed / latency
95 tok/s / 1234ms
input / output
No data
小水管 API15 tests | Gemini 3.1 Flash Lite speed / latency 218 tok/s / 4094ms input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
|---|
Undy API5 tests | Gemini 3.1 Flash Lite speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 131 tok/s / 743ms input / output No data |
|---|
0CHAT0 tests | Gemini 3.1 Flash Lite speed / latency N/A / N/A input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
|---|
91VIP API0 tests | Gemini 3.1 Flash Lite speed / latency N/A / N/A input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
|---|
Gemini 3.1 Flash Lite gemini-3.1-flash-lite-preview-c speed / latency No data input / output $0.010/M / $0.010/M | GPT-5 gpt-5-chat-latest speed / latency No data input / output $1.25/M / $10.00/M |
Gemini 3.1 Flash Lite gemini-3.1-flash-lite speed / latency No data input / output $0.010/M / $0.010/M | GPT-5 gpt-5 speed / latency No data input / output $1.35/M / $10.80/M |
Gemini 3.1 Flash Lite gemini-3.1-flash-lite-preview speed / latency No data input / output $0.010/M / $0.031/M | GPT-5 gpt-5-chat-latest speed / latency No data input / output $0.051/M / $0.411/M |
Gemini 3.1 Flash Lite gemini-3.1-flash-lite-preview speed / latency No data input / output $0.021/M / $0.129/M | GPT-5 gpt-5-chat speed / latency No data input / output $0.171/M / $1.37/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
