Data points: 65
The readout for GPT-4o Search 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 2 to 4.
Evidence depth
65 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.
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Model compare GPT-4o Search vs GPT-5.4gpt-4o-search-vs-gpt-5-4 | Model A GPT-4o Search | Model B GPT-5.4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 2 wins | 4 wins |
| Where it leads | Average speed, First-token latency | Cheapest input price, Free providers, Provider coverage, Recent tests |
| Model metadata | GPT-4o Search exposes 128K tokens; notable signals: Text input, Text output, Structured outputs, JSON mode. | GPT-5.4 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. |
| Developer | OpenAI | OpenAI |
| Context window | 128K tokens | 1.1M tokens |
| Max output | 16.4K tokens | 128K tokens |
| Released | Mar 2025 | Mar 2026 |
| Modalities | Input Text Output Text | Input TextImageFile Output Text |
| Features | Text inputText outputStructured outputsJSON modeWeb search | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | 2023-10-31 | No data |
| OpenRouter ID | openai/gpt-4o-search-preview | openai/gpt-5.4 |
| References | No data | No data |
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-4o Search
-
Avg. score
GPT-5.4
66.6
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-4o Search | 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 | GPT-4o Search | GPT-5.4 |
|---|---|---|
GuaiHub5 tests | GPT-4o Search speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 70 tok/s / 2961ms input / output No data |
SWT-API5 tests | GPT-4o Search speed / latency 61 tok/s / 3469ms input / output No data | GPT-5.4 speed / latency N/A / N/A input / output No data |
WSocket AI5 tests | GPT-4o Search speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 36 tok/s / 12157ms input / output No data |
天絮 API5 tests | GPT-4o Search speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 46 tok/s / 3291ms input / output No data |
米醋API5 tests | GPT-4o Search speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 51 tok/s / 6045ms input / output No data |
GPT-4o Search gpt-4o-search-preview-2025-03-11 speed / latency No data input / output $0.103/M / $0.411/M | GPT-5.4 gpt-5.4-xhigh speed / latency No data input / output $0.103/M / $0.616/M | |
GPT-4o Search gpt-4o-search-preview-2025-03-11 speed / latency No data input / output $0.342/M / $1.37/M | GPT-5.4 gpt-5.4-2026-03-05 speed / latency No data input / output $0.342/M / $2.05/M | |
GPT-4o Search gpt-4o-search-preview speed / latency No data input / output $0.342/M / $1.37/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $10.27/M / $61.64/M |
This report only uses LMSpeed data for GPT-4o Search and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-4o Search | GPT-5.4 |
|---|---|---|
| When to choose each model | GPT-4o Search GPT-4o Search is stronger when you prioritize Average speed, First-token latency. | GPT-5.4 GPT-5.4 is stronger when you prioritize Cheapest input price, Free providers, Provider coverage, Recent tests. |
TL;DR: GPT-5.4 leads across 65 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-4o Search vs GPT-5.4 into nearby model comparisons with enough verified LMSpeed data.
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
