Data points: 81
The readout for Gemini 3.1 Pro and GPT-5, before the detailed comparison sheet.
Decision read
Gemini 3.1 Pro
Gemini 3.1 Pro 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 8 provider examples.
Selection signal
Start with Gemini 3.1 Pro
The charts below split 16 high-signal samples across speed, scores, and audit health.
Model compare Gemini 3.1 Pro vs GPT-5gemini-3-1-pro-vs-gpt-5 | Model A Gemini 3.1 Pro | Model B GPT-5 |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 2 wins |
| Where it leads | Cheapest input price, Average speed, Free providers, Provider coverage |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Gemini 3.1 Pro | GPT-5 |
|---|---|---|
| GPQA | 94.1%#1 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 3.1 Pro | 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 Pro | GPT-5 |
|---|---|---|
20 tests | Gemini 3.1 Pro speed / latency N/A / N/A input / output No data |
This report only uses LMSpeed data for Gemini 3.1 Pro and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Gemini 3.1 Pro | GPT-5 |
|---|---|---|
| When to choose each model | Gemini 3.1 Pro Gemini 3.1 Pro is stronger when you prioritize Cheapest input price, Average speed, Free providers, Provider coverage. | GPT-5 GPT-5 is stronger when you prioritize First-token latency, Recent tests. |
TL;DR: Gemini 3.1 Pro leads across 81 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Gemini 3.1 Pro vs GPT-5 into nearby model comparisons with enough verified LMSpeed data.
| First-token latency, Recent tests |
| Model metadata | Gemini 3.1 Pro 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 | Feb 2026 | Aug 2025 |
| Modalities | Input AudioFileImageTextvideo 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-pro-preview | openai/gpt-5-chat |
| References | No data | No data |
| SciCode | 58.9%#2 | 42.9%#31 |
|---|
| HLE | 44.7%#3 | 26.5%#24 |
|---|
| Input price | $2.00/M#36 | $1.25/M#30 |
|---|
| Output speed | 133.4 tok/s#35 | 109.6 tok/s#44 |
|---|
| Output price | $12.00/M#42 | $10.00/M#41 |
|---|
| Blended price | $4.50/M#61 | $3.44/M#58 |
|---|
| Time to first answer token | 28.68 s#84 | 62.85 s#98 |
|---|
GPT-5
speed / latency
95 tok/s / 1234ms
input / output
No data
CatClaw API15 tests | Gemini 3.1 Pro speed / latency 121 tok/s / 11404ms input / output No data | GPT-5 speed / latency 45 tok/s / 3704ms input / output No data |
|---|
TradingBase API10 tests | Gemini 3.1 Pro speed / latency 102 tok/s / 12933ms input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
|---|
AIHubMix5 tests | Gemini 3.1 Pro speed / latency 70 tok/s / 25059ms input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
|---|
EasyMore5 tests | Gemini 3.1 Pro speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 46 tok/s / 6577ms input / output No data |
|---|
Gemini 3.1 Pro gemini-3.1-pro-preview speed / latency No data input / output $0.0041/M / $0.0041/M | GPT-5 gpt-5 speed / latency No data input / output $0.036/M / $0.285/M |
Gemini 3.1 Pro gemini-3.1-pro-preview-c speed / latency No data input / output $0.0082/M / $0.0082/M | GPT-5 gpt-5-chat-latest speed / latency No data input / output $0.274/M / $2.19/M |
Gemini 3.1 Pro gemini-3.1-pro-preview speed / latency No data input / output $0.014/M / $0.014/M | GPT-5 gpt-5-openai-compact speed / latency No data input / output $10.27/M / $10.27/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
