Data points: 54
The readout for GPT-5.4 and GPT Image 1.5, before the detailed comparison sheet.
Decision read
GPT-5.4
GPT-5.4 currently has the stronger profile, with verified wins split 4 to 0.
Evidence depth
54 data points
Includes 0 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 8 high-signal samples across speed, scores, and audit health.
Model compare GPT-5.4 vs GPT Image 1.5gpt-5-4-vs-gpt-image-1-5 | Model A GPT-5.4 | Model B GPT Image 1.5 |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 0 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 | GPT-5.4 | GPT Image 1.5 |
|---|---|---|
| No shared benchmark metrics are available yet. | ||
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | GPT Image 1.5 |
|---|---|---|
| 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 | GPT-5.4 | GPT Image 1.5 |
|---|---|---|
100 tests | GPT-5.4 speed / latency 57 tok/s / 3556ms input / output No data |
This report only uses LMSpeed data for GPT-5.4 and GPT Image 1.5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.4 | GPT Image 1.5 |
|---|---|---|
| When to choose each model | GPT-5.4 GPT-5.4 is stronger when you prioritize Cheapest input price, Free providers, Provider coverage, Recent tests. | GPT Image 1.5 GPT Image 1.5 does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. |
TL;DR: GPT-5.4 leads across 54 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.4 vs GPT Image 1.5 into nearby model comparisons with enough verified LMSpeed data.
| No data |
| Model metadata | GPT-5.4 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. | No OpenRouter metadata is available yet for this model. |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Context window | 1.1M tokens | No data |
| Max output | 128K tokens | No data |
| Released | Mar 2026 | No data |
| Modalities | Input TextImageFile Output Text | No data |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | None listed |
| Parameters | No data | No data |
| Tokenizer | GPT | No data |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | openai/gpt-5.4 | No data |
| References | No data | No data |
GPT Image 1.5
speed / latency
N/A / N/A
input / output
No data
QuicklyAPI35 tests | GPT-5.4 speed / latency 50 tok/s / 2467ms input / output No data | GPT Image 1.5 speed / latency N/A / N/A input / output No data |
|---|
Sub2API20 tests | GPT-5.4 speed / latency 51 tok/s / 4032ms input / output No data | GPT Image 1.5 speed / latency N/A / N/A input / output No data |
|---|
6345ywz API15 tests | GPT-5.4 speed / latency 41 tok/s / 6581ms input / output No data | GPT Image 1.5 speed / latency N/A / N/A input / output No data |
|---|
Omini Api10 tests | GPT-5.4 speed / latency 51 tok/s / 1443ms input / output No data | GPT Image 1.5 speed / latency N/A / N/A input / output No data |
|---|
GPT-5.4 gpt-5.4-free speed / latency No data input / output $0/M / $0/M | GPT Image 1.5 gpt-image-1.5 speed / latency No data input / output $10.00/M / $64.00/M |
GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $10.27/M / $61.64/M | GPT Image 1.5 gpt-image-1.5 speed / latency No data input / output $0.0055/M / $0.0055/M |
GPT-5.4 gpt-5.4-2026-03-05 speed / latency No data input / output $0.342/M / $2.05/M | GPT Image 1.5 gpt-image-1.5 speed / latency No data input / output $0.0068/M / $0.0068/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
