Data points: 63
The readout for Gemini 2.5 Flash Image 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 1 to 3.
Evidence depth
63 data points
Includes 0 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 7 high-signal samples across speed, scores, and audit health.
Model compare Gemini 2.5 Flash Image vs GPT-5.4gemini-2-5-flash-image-vs-gpt-5-4 | Model A Gemini 2.5 Flash Image | Model B GPT-5.4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 1 wins | 3 wins |
| Where it leads | Cheapest input price | Free providers, Provider coverage, Recent tests |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Gemini 2.5 Flash Image | GPT-5.4 |
|---|---|---|
| No shared benchmark metrics are available yet. | ||
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 2.5 Flash Image | GPT-5.4 |
|---|---|---|
| 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 Image | GPT-5.4 |
|---|---|---|
10 tests | Gemini 2.5 Flash Image gemini-2.5-flash-image-preview speed / latency N/A / N/A input / output $0.0019/M / $0.0019/M |
This report only uses LMSpeed data for Gemini 2.5 Flash Image and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Gemini 2.5 Flash Image | GPT-5.4 |
|---|---|---|
| When to choose each model | Gemini 2.5 Flash Image Gemini 2.5 Flash Image is stronger when you prioritize Cheapest input price. | GPT-5.4 GPT-5.4 is stronger when you prioritize Free providers, Provider coverage, Recent tests. |
TL;DR: GPT-5.4 leads across 63 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Gemini 2.5 Flash Image vs GPT-5.4 into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | Gemini 2.5 Flash Image exposes 32.8K tokens; notable signals: Text input, Image input, Text output, Image output. | GPT-5.4 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | OpenAI | |
| Context window | 32.8K tokens | 1.1M tokens |
| Max output | 32.8K tokens | 128K tokens |
| Released | Oct 2025 | Mar 2026 |
| Modalities | Input ImageText Output ImageText | Input TextImageFile Output Text |
| Features | Text inputImage inputText outputImage outputStructured outputsJSON mode | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | Gemini | GPT |
| Knowledge cutoff | 2025-01-31 | No data |
| OpenRouter ID | google/gemini-2.5-flash-image | openai/gpt-5.4 |
| References | No data | No data |
GPT-5.4
gpt-5.4
speed / latency
51 tok/s / 2526ms
input / output
$0.084/M / $0.503/M
331112 AI5 tests | Gemini 2.5 Flash Image speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 86 tok/s / 6122ms input / output No data |
|---|
GuaiHub5 tests | Gemini 2.5 Flash Image speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 70 tok/s / 2961ms input / output No data |
|---|
TradingBase API5 tests | Gemini 2.5 Flash Image speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 71 tok/s / 1629ms input / output No data |
|---|
小水管 API5 tests | Gemini 2.5 Flash Image speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 44 tok/s / 2518ms input / output No data |
|---|
Gemini 2.5 Flash Image gemini-2.5-flash-image-preview speed / latency No data input / output $0.0005/M / $0.0005/M | GPT-5.4 gpt-5.4-xhigh speed / latency No data input / output $0.103/M / $0.616/M |
Gemini 2.5 Flash Image gemini-2.5-flash-image speed / latency No data input / output $0.0055/M / $0.0055/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $4.11/M / $24.66/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
