Data points: 113
The readout for GPT-5.4 and O3 Mini, 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
113 data points
Includes 24 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 31 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 O3 Minigpt-5-4-vs-o3-mini | Model A GPT-5.4 | Model B O3 Mini |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 5 wins | 1 wins |
| Where it leads | Cheapest input price, First-token latency, 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
66.4
Avg. score
O3 Mini
59.2
Selected category
Agents
GPT-5.4 leads by 40.5
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-5.4
winner87.0
Rank #6/82 · confidence 4 · eval date 2026-03-05
O3 Mini
55.0
Rank #43/82 · confidence 1 · eval date 2025-01-31
GPT-5.4
165.8 tok/s
Rank #14/78 · confidence 4
O3 Mini
winner224.5 tok/s
Rank #4/78 · confidence 4
GPT-5.4
118.05 s
Rank #78/78 · confidence 4
O3 Mini
winner15.30 s
Rank #48/78 · confidence 4
GPT-5.4
118.05 s
Rank #78/78 · confidence 4
O3 Mini
winner15.30 s
Rank #65/78 · confidence 4
GPT-5.4
$15.00/M
Rank #78/95 · confidence 4
O3 Mini
winner$4.40/M
Rank #56/95 · confidence 4
GPT-5.4
$5.63/M
Rank #78/95 · confidence 4
O3 Mini
winner$1.93/M
Rank #57/95 · confidence 4
GPT-5.4
$2.50/M
Rank #77/95 · confidence 4
O3 Mini
winner$1.10/M
Rank #58/95 · confidence 4
GPT-5.4
winner95.6
Rank #3/57 · confidence 4 · eval date 2026-03-05
O3 Mini
68.0
Rank #19/57 · confidence 1 · eval date 2025-01-31
GPT-5.4
winner92.0%
Rank #4/103 · confidence 4
O3 Mini
77.3%
Rank #54/103 · confidence 4
GPT-5.4
winner41.6%
Rank #6/103 · confidence 4
O3 Mini
12.3%
Rank #52/103 · confidence 4
GPT-5.4
winner56.6
Rank #2/63 · confidence 4 · eval date 2026-03-05
O3 Mini
39.9
Rank #39/63 · confidence 1 · eval date 2025-01-31
GPT-5.4
winner57.6
Rank #2/59 · confidence 4 · eval date 2026-03-05
O3 Mini
6.8
Rank #54/59 · confidence 1 · eval date 2025-01-31
GPT-5.4
winner57.3
Rank #3/61 · confidence 4 · eval date 2026-03-05
O3 Mini
17.9
Rank #54/61 · confidence 1 · eval date 2025-01-31
GPT-5.4
winner56.6%
Rank #3/101 · confidence 4
O3 Mini
39.8%
Rank #49/101 · confidence 4
GPT-5.4
winner86.7
Rank #10/69 · confidence 4 · eval date 2026-03-05
O3 Mini
48.5
Rank #45/69 · confidence 1 · eval date 2025-01-31
GPT-5.4
winner92.0
Rank #2/63 · confidence 4 · eval date 2026-03-05
O3 Mini
74.8
Rank #44/63 · confidence 1 · eval date 2025-01-31
GPT-5.4
winner41.6
Rank #3/63 · confidence 4 · eval date 2026-03-05
O3 Mini
8.7
Rank #42/63 · confidence 1 · eval date 2025-01-31
GPT-5.4
winner51.4
Rank #3/66 · confidence 4 · eval date 2026-03-05
O3 Mini
19.0
Rank #51/66 · confidence 1 · eval date 2025-01-31
GPT-5.4
winner97.4
Rank #3/67 · confidence 4 · eval date 2026-03-05
O3 Mini
60.7
Rank #36/67 · confidence 1 · eval date 2025-01-31
GPT-5.4
winner100.0
Rank #1/50 · confidence 4 · eval date 2026-03-05
O3 Mini
44.8
Rank #35/50 · confidence 1 · eval date 2025-01-31
GPT-5.4
59.6
Rank #35/60 · confidence 4 · eval date 2026-03-05
O3 Mini
winner65.6
Rank #26/60 · confidence 1 · eval date 2025-01-31
GPT-5.4
winner96.0
Rank #1/56 · confidence 4 · eval date 2026-03-05
O3 Mini
85.3
Rank #13/56 · confidence 1 · eval date 2025-01-31
GPT-5.4
winner83.0
Rank #6/69 · confidence 4 · eval date 2026-03-05
O3 Mini
60.6
Rank #24/69 · confidence 1 · eval date 2025-01-31
GPT-5.4
winner87.1
Rank #18/58 · confidence 4 · eval date 2026-03-05
O3 Mini
28.7
Rank #51/58 · confidence 1 · eval date 2025-01-31
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | O3 Mini |
|---|---|---|
| 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 | O3 Mini |
|---|---|---|
25 tests | GPT-5.4 speed / latency N/A / N/A input / output No data | O3 Mini |
This report only uses LMSpeed data for GPT-5.4 and O3 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.4 | O3 Mini |
|---|---|---|
| When to choose each model | GPT-5.4 GPT-5.4 is stronger when you prioritize Cheapest input price, First-token latency, Free providers, Provider coverage, Recent tests. | O3 Mini O3 Mini is stronger when you prioritize Average speed. |
TL;DR: GPT-5.4 leads across 113 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.4 vs O3 Mini into nearby model comparisons with enough verified LMSpeed data.
| Average speed |
| Model metadata | GPT-5.4 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. | O3 Mini exposes 200K tokens; notable signals: Text input, File input, Text output, Tool calling. |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Context window | 1.1M tokens | 200K tokens |
| Max output | 128K tokens | 100K tokens |
| Released | Mar 2026 | Feb 2025 |
| Modalities | Input TextImageFile Output Text | Input TextFile Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | No data | 2023-10-31 |
| OpenRouter ID | openai/gpt-5.4 | openai/o3-mini-high |
| References | No data | No data |
speed / latency
66 tok/s / 6491ms
input / output
No data
Sub2API20 tests | GPT-5.4 speed / latency 51 tok/s / 4032ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
|---|
QQ Code10 tests | GPT-5.4 speed / latency 55 tok/s / 2903ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
|---|
Sub2API10 tests | GPT-5.4 speed / latency 54 tok/s / 1369ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
|---|
Sub2API10 tests | GPT-5.4 speed / latency 51 tok/s / 1093ms input / output No data | O3 Mini 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 | O3 Mini o3-mini-medium speed / latency No data input / output $2.20/M / $8.80/M |
GPT-5.4 gpt-5.4-medium speed / latency No data input / output $0.034/M / $0.205/M | O3 Mini o3-mini-high speed / latency No data input / output $0.021/M / $0.082/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
