Data points: 35
The readout for GPT-5.4 and Italia Instruct, before the detailed comparison sheet.
Decision read
GPT-5.4
GPT-5.4 currently has the stronger profile, with verified wins split 5 to 1.
Evidence depth
35 data points
Includes 0 benchmark rows, 0 audit samples, and 5 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 5 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
Select a different model to open a new comparison URL.
Model compare GPT-5.4 vs Italia Instructgpt-5-4-vs-italia-instruct | Model A GPT-5.4 | Model B Italia Instruct |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 5 wins | 1 wins |
| Where it leads | Cheapest input price, Average speed, Free providers, Provider coverage, Recent tests | First-token latency |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
GPT-5.4
66.6
Avg. score
Italia Instruct
-
Selected category
Agents
GPT-5.4
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
No shared professional benchmark scores are available yet.
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | Italia Instruct |
|---|---|---|
| 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 | Italia Instruct |
|---|---|---|
28 tests | GPT-5.4 speed / latency 49 tok/s / 5435ms input / output No data | Italia Instruct |
This report only uses LMSpeed data for GPT-5.4 and Italia Instruct: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.4 | Italia Instruct |
|---|---|---|
| When to choose each model | GPT-5.4 GPT-5.4 is stronger when you prioritize Cheapest input price, Average speed, Free providers, Provider coverage, Recent tests. | Italia Instruct Italia Instruct is stronger when you prioritize First-token latency. |
TL;DR: GPT-5.4 leads across 35 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.4 vs Italia Instruct into nearby model comparisons with enough verified LMSpeed 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 | No data |
| 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 |
speed / latency
36 tok/s / 488ms
input / output
No data
APDSM0 tests | GPT-5.4 speed / latency N/A / N/A input / output No data | Italia Instruct speed / latency N/A / N/A input / output No data |
|---|
MapleLeaf API0 tests | GPT-5.4 speed / latency N/A / N/A input / output No data | Italia Instruct speed / latency N/A / N/A input / output No data |
|---|
RenRen API0 tests | GPT-5.4 speed / latency N/A / N/A input / output No data | Italia Instruct speed / latency N/A / N/A input / output No data |
|---|
Seamee API0 tests | GPT-5.4 speed / latency N/A / N/A input / output No data | Italia Instruct speed / latency N/A / N/A input / output No data |
|---|
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
