Data points: 39
The readout for GPT-5.4 and o4 Mini High, before the detailed comparison sheet.
Decision read
GPT-5.4
GPT-5.4 currently has the stronger profile, with verified wins split 3 to 0.
Evidence depth
39 data points
Includes 9 benchmark rows, 0 audit samples, and 0 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 9 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 o4 Mini Highgpt-5-4-vs-o4-mini-high | Model A GPT-5.4 | Model B o4 Mini High |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 3 wins | 0 wins |
| Where it leads | Free providers, Provider coverage, Recent tests |
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
63.6
Avg. score
o4 Mini High
-
Selected category
Agents
GPT-5.4
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-5.4
winner86.0
Rank #3/96 · confidence 4 · eval date 2026-03-05
o4 Mini High
44.0
Rank #62/96 · confidence 1 · eval date 2025-04-16
GPT-5.4
winner87.5
Rank #4/65 · confidence 4 · eval date 2026-03-05
o4 Mini High
46.8
Rank #41/65 · confidence 1 · eval date 2025-04-16
GPT-5.4
winner86.4
Rank #5/83 · confidence 4 · eval date 2026-03-05
o4 Mini High
48.6
Rank #58/83 · confidence 1 · eval date 2025-04-16
GPT-5.4
winner87.0
Rank #3/29 · confidence 4 · eval date 2026-03-05
o4 Mini High
29.6
Rank #29/29 · confidence 1 · eval date 2025-04-16
GPT-5.4
winner96.9
Rank #1/79 · confidence 4 · eval date 2026-03-05
o4 Mini High
54.2
Rank #47/79 · confidence 1 · eval date 2025-04-16
GPT-5.4
winner100.0
Rank #1/59 · confidence 4 · eval date 2026-03-05
o4 Mini High
67.2
Rank #22/59 · confidence 1 · eval date 2025-04-16
GPT-5.4
winner60.0
Rank #41/70 · confidence 4 · eval date 2026-03-05
o4 Mini High
49.5
Rank #53/70 · confidence 1 · eval date 2025-04-16
GPT-5.4
winner92.6
Rank #1/66 · confidence 4 · eval date 2026-03-05
o4 Mini High
62.4
Rank #39/66 · confidence 1 · eval date 2025-04-16
GPT-5.4
winner88.3
Rank #3/81 · confidence 4 · eval date 2026-03-05
o4 Mini High
44.8
Rank #51/81 · confidence 1 · eval date 2025-04-16
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | o4 Mini High |
|---|---|---|
| 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 | o4 Mini High |
|---|---|---|
| No shared provider examples are available yet. | ||
This report only uses LMSpeed data for GPT-5.4 and o4 Mini High: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.4 | o4 Mini High |
|---|---|---|
| When to choose each model | GPT-5.4 GPT-5.4 is stronger when you prioritize Free providers, Provider coverage, Recent tests. | o4 Mini High o4 Mini High does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. |
TL;DR: GPT-5.4 leads across 39 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.4 vs o4 Mini High 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. | o4 Mini High exposes 200K tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Context window | 1.1M tokens | 200K tokens |
| Max output | 128K tokens | 100K tokens |
| Released | Mar 2026 | No data |
| Modalities | Input TextImageFile Output Text | Input ImageTextFile 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 | 2024-06-30 |
| OpenRouter ID | openai/gpt-5.4 | openai/o4-mini-high |
| References | No data | No data |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
