Data points: 90
The readout for Gemini 3.1 Pro and GPT-5.4, before the detailed comparison sheet.
Decision read
GPT-5.4
GPT-5.4 currently has the stronger profile, with verified wins split 2 to 4.
Evidence depth
90 data points
Includes 8 benchmark rows, 2 audit samples, and 8 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 18 high-signal samples across speed, scores, and audit health.
Model compare Gemini 3.1 Pro vs GPT-5.4gemini-3-1-pro-vs-gpt-5-4 | Model A Gemini 3.1 Pro | Model B GPT-5.4 |
|---|---|---|
| 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 |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Gemini 3.1 Pro | GPT-5.4 |
|---|---|---|
| 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-5.4 |
|---|---|---|
Winner: GPT-5.4 | Gemini 3.1 Pro gemini-3.1-pro-high No audit yet | GPT-5.4 gpt-5.4 |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Gemini 3.1 Pro | GPT-5.4 |
|---|---|---|
50 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-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Gemini 3.1 Pro | GPT-5.4 |
|---|---|---|
| When to choose each model | Gemini 3.1 Pro Gemini 3.1 Pro is stronger when you prioritize Cheapest input price, Average speed. | GPT-5.4 GPT-5.4 is stronger when you prioritize First-token latency, Free providers, Provider coverage, Recent tests. |
TL;DR: GPT-5.4 leads across 90 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Gemini 3.1 Pro vs GPT-5.4 into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | Gemini 3.1 Pro exposes 1.0M tokens; notable signals: Text input, Image input, File input, Audio input. | GPT-5.4 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | OpenAI | |
| Context window | 1.0M tokens | 1.1M tokens |
| Max output | 65.5K tokens | 128K tokens |
| Released | Feb 2026 | Mar 2026 |
| Modalities | Input AudioFileImageTextvideo Output Text | Input TextImageFile Output Text |
| Features | Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputs |
| Parameters | No data | No data |
| Tokenizer | Gemini | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | google/gemini-3.1-pro-preview | openai/gpt-5.4 |
| References | No data | No data |
| SciCode | 58.9%#2 | 56.6%#3 |
|---|
| HLE | 44.7%#3 | 41.6%#4 |
|---|
| Output speed | 133.4 tok/s#35 | 92.4 tok/s#56 |
|---|
| Input price | $2.00/M#36 | $2.50/M#37 |
|---|
| Output price | $12.00/M#42 | $15.00/M#44 |
|---|
| Blended price | $4.50/M#61 | $5.63/M#63 |
|---|
| Time to first answer token | 28.68 s#84 | 134.24 s#111 |
|---|
Audit score
90
VSLLMWinner: Gemini 3.1 Pro | Gemini 3.1 Pro gemini-3.1-pro-preview Audit score 79 698463100 | GPT-5.4 gpt-5.4 No audit yet |
|---|
GPT-5.4
speed / latency
50 tok/s / 7305ms
input / output
No data
星见雅 API20 tests | Gemini 3.1 Pro speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 49 tok/s / 5435ms input / output No data |
|---|
TradingBase API15 tests | Gemini 3.1 Pro speed / latency 102 tok/s / 12933ms input / output No data | GPT-5.4 speed / latency 71 tok/s / 1629ms input / output No data |
|---|
0CHAT10 tests | Gemini 3.1 Pro speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 51 tok/s / 2526ms input / output No data |
|---|
CatClaw API10 tests | Gemini 3.1 Pro speed / latency 121 tok/s / 11404ms input / output No data | GPT-5.4 speed / latency N/A / N/A 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-5.4 gpt-5.4-openai-compact speed / latency No data input / output $0.342/M / $2.05/M |
Gemini 3.1 Pro gemini-3.1-pro-preview-c speed / latency No data input / output $0.0082/M / $0.0082/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $0.342/M / $2.05/M |
Gemini 3.1 Pro gemini-3.1-pro speed / latency No data input / output $0.014/M / $0.137/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $10.27/M / $61.64/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
