Data points: 55
The readout for GPT-4.5 and GPT-4o, before the detailed comparison sheet.
Decision read
GPT-4o
GPT-4o currently has the stronger profile, with verified wins split 0 to 3.
Evidence depth
55 data points
Includes 0 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with GPT-4o
The charts below split 7 high-signal samples across speed, scores, and audit health.
Model compare GPT-4.5 vs GPT-4ogpt-4-5-vs-gpt-4o | Model A GPT-4.5 | Model B GPT-4o |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 0 wins | 3 wins |
| Where it leads | No data | Cheapest input price, Provider coverage, Recent tests |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GPT-4.5 | GPT-4o |
|---|---|---|
| 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-4.5 | GPT-4o |
|---|---|---|
| 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-4.5 | GPT-4o |
|---|---|---|
20 tests | GPT-4.5 speed / latency N/A / N/A input / output No data | GPT-4o |
This report only uses LMSpeed data for GPT-4.5 and GPT-4o: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-4.5 | GPT-4o |
|---|---|---|
| When to choose each model | GPT-4.5 GPT-4.5 does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. | GPT-4o GPT-4o is stronger when you prioritize Cheapest input price, Provider coverage, Recent tests. |
TL;DR: GPT-4o leads across 55 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-4.5 vs GPT-4o into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | No OpenRouter metadata is available yet for this model. | GPT-4o exposes 128K tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Context window | No data | 128K tokens |
| Max output | No data | 16.4K tokens |
| Released | No data | Nov 2024 |
| Modalities | No data | Input TextImageFile Output Text |
| Features | None listed | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeWeb search |
| Parameters | No data | No data |
| Tokenizer | No data | GPT |
| Knowledge cutoff | No data | 2023-10-31 |
| OpenRouter ID | No data | openai/gpt-4o-2024-11-20 |
| References | No data | No data |
speed / latency
88 tok/s / 1593ms
input / output
No data
KFCV505 tests | GPT-4.5 speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 48 tok/s / 13138ms input / output No data |
|---|
YUNWU API5 tests | GPT-4.5 speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 58 tok/s / 2583ms input / output No data |
|---|
ZEN-AI VIP3 tests | GPT-4.5 gpt-4.5-preview-2025-02-27 speed / latency N/A / N/A input / output $3.08/M / $6.16/M | GPT-4o gpt-4o-2024-05-13 speed / latency 40 tok/s / 2993ms input / output $0.205/M / $0.616/M |
|---|
42公益站0 tests | GPT-4.5 speed / latency N/A / N/A input / output No data | GPT-4o speed / latency N/A / N/A input / output No data |
|---|
GPT-4.5 gpt-4.5-preview-2025-02-27 speed / latency No data input / output $10.27/M / $20.55/M | GPT-4o gpt-4o speed / latency No data input / output $0.342/M / $1.37/M |
GPT-4.5 gpt-4.5-preview speed / latency No data input / output $9.25/M / $18.49/M | GPT-4o gpt-4o-all speed / latency No data input / output $0.616/M / $1.85/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
