Data points: 68
The readout for GPT-5.4 and GPT-5.4 Pro, 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
68 data points
Includes 3 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 11 high-signal samples across speed, scores, and audit health.
Model compare GPT-5.4 vs GPT-5.4 Progpt-5-4-vs-gpt-5-4-pro | Model A GPT-5.4 | Model B GPT-5.4 Pro |
|---|---|---|
| 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-5.4 Pro |
|---|---|---|
| Input price | $2.50/M#37 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | GPT-5.4 Pro |
|---|---|---|
| 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-5.4 Pro |
|---|---|---|
5 tests | GPT-5.4 speed / latency 70 tok/s / 2961ms input / output No data | GPT-5.4 Pro |
This report only uses LMSpeed data for GPT-5.4 and GPT-5.4 Pro: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.4 | GPT-5.4 Pro |
|---|---|---|
| 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-5.4 Pro GPT-5.4 Pro does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. |
TL;DR: GPT-5.4 leads across 68 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.4 vs GPT-5.4 Pro 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. | GPT-5.4 Pro exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Context window | 1.1M tokens | 1.1M tokens |
| Max output | 128K tokens | 128K tokens |
| Released | Mar 2026 | Mar 2026 |
| Modalities | Input TextImageFile Output Text | Input TextImageFile Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | openai/gpt-5.4 | openai/gpt-5.4-pro |
| References | No data | No data |
| Output price | $15.00/M#44 | $180.00/M#54 |
|---|
| Blended price | $5.63/M#63 | $67.50/M#76 |
|---|
speed / latency
N/A / N/A
input / output
No data
SmokeDivine AI5 tests | GPT-5.4 speed / latency 44 tok/s / 1119ms input / output No data | GPT-5.4 Pro speed / latency N/A / N/A input / output No data |
|---|
TradingBase API5 tests | GPT-5.4 speed / latency 71 tok/s / 1629ms input / output No data | GPT-5.4 Pro speed / latency N/A / N/A input / output No data |
|---|
WSocket AI5 tests | GPT-5.4 speed / latency 36 tok/s / 12157ms input / output No data | GPT-5.4 Pro speed / latency N/A / N/A input / output No data |
|---|
小水管 API5 tests | GPT-5.4 speed / latency 44 tok/s / 2518ms input / output No data | GPT-5.4 Pro 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-5.4 Pro gpt-5.4-pro-2026-03-05 speed / latency No data input / output $60.00/M / $360.00/M |
GPT-5.4 gpt-5.4 speed / latency No data input / output $0.027/M / $0.027/M | GPT-5.4 Pro gpt-5.4-pro-2026-03-05 speed / latency No data input / output $4.11/M / $24.66/M |
GPT-5.4 gpt-5.4-high speed / latency No data input / output $0.103/M / $0.616/M | GPT-5.4 Pro gpt-5.4-pro-2026-03-05 speed / latency No data input / output $1.23/M / $9.86/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
