Data points: 110
Model compare
The readout for GPT-5.4 Mini and O3 Mini, before the detailed comparison sheet.
Weighted outcome: GPT-5.4 Mini. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5.4 Mini
GPT-5.4 Mini has the higher weighted result; Model A / B score 69.3 to 30.7.
Evidence depth
110 data points
Includes 17 benchmark rows, 2 audit samples, and 6 provider examples.
Selection signal
Start with GPT-5.4 Mini
The charts below split 25 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.
This report only uses LMSpeed data for GPT-5.4 Mini and O3 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-5.4 Mini | O3 Mini |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 69.3 pts | 30.7 pts |
| Benchmark category leads | 4 categories | 2 categories |
| Operational advantages | Cheapest input price, Average speed, First-token latency, Provider coverage | Free providers |
| Context window | 400K tokens | 200K tokens |
| Max output | 128K tokens | 100K tokens |
| Modalities | Input FileImageText Output Text |
The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.
| Model compare | GPT-5.4 Mini | O3 Mini |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Released | Mar 2026 | Feb 2025 |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | 2025-08-31 | 2023-10-31 |
| OpenRouter ID | openai/gpt-5.4-mini | openai/o3-mini |
| References | No data | No data |
This report only uses LMSpeed data for GPT-5.4 Mini and O3 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-5.4 Mini
GPT-5.4 Mini is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge) and operational dimensions (Cheapest input price, Average speed, First-token latency, Provider coverage).
O3 Mini
O3 Mini is stronger in benchmark categories (Math, Instruction following) and operational dimensions (Free providers).
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 Mini
52
Avg. score
O3 Mini
48.8
GPT-5.4 Mini leads by 11.6
GPT-5.4 Mini leads by 16.8
GPT-5.4 Mini leads by 6.5
GPT-5.4 Mini leads by 0.3
O3 Mini leads by 8.9
No data
GPT-5.4 Mini
O3 Mini leads by 1.5
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-5.4 Mini
winner59.0
Rank #35/83 · confidence 3 · eval date 2026-03-17
O3 Mini
51.0
Rank #55/83 · confidence 1 · eval date 2025-01-31
GPT-5.4 Mini
203.4 tok/s
Rank #23/136 · confidence 4
O3 Mini
winner222.7 tok/s
Rank #16/136 · confidence 4
GPT-5.4 Mini
9.70 s
Rank #71/136 · confidence 4
O3 Mini
winner5.41 s
Rank #61/136 · confidence 4
GPT-5.4 Mini
9.70 s
Rank #113/136 · confidence 4
O3 Mini
winner5.41 s
Rank #108/136 · confidence 4
GPT-5.4 Mini
winner$0.750/M
Rank #95/162 · confidence 4
O3 Mini
$1.10/M
Rank #103/162 · confidence 4
GPT-5.4 Mini
winner$1.69/M
Rank #96/162 · confidence 4
O3 Mini
$1.93/M
Rank #99/162 · confidence 4
GPT-5.4 Mini
$4.50/M
Rank #103/162 · confidence 4
O3 Mini
winner$4.40/M
Rank #98/162 · confidence 4
GPT-5.4 Mini
winner82.3%
Rank #63/187 · confidence 4
O3 Mini
74.8%
Rank #96/187 · confidence 4
GPT-5.4 Mini
winner17.1%
Rank #64/186 · confidence 4
O3 Mini
8.7%
Rank #97/186 · confidence 4
GPT-5.4 Mini
winner49.9
Rank #23/96 · confidence 3 · eval date 2026-03-17
O3 Mini
39.9
Rank #59/96 · confidence 1 · eval date 2025-01-31
GPT-5.4 Mini
winner57.7
Rank #32/64 · confidence 3 · eval date 2026-03-17
O3 Mini
21.6
Rank #63/64 · confidence 1 · eval date 2025-01-31
GPT-5.4 Mini
winner44.2%
Rank #37/184 · confidence 4
O3 Mini
39.9%
Rank #69/184 · confidence 4
GPT-5.4 Mini
winner40.0
Rank #30/99 · confidence 3 · eval date 2026-03-17
O3 Mini
19.0
Rank #77/99 · confidence 1 · eval date 2025-01-31
GPT-5.4 Mini
63.4
Rank #37/54 · confidence 3 · eval date 2026-03-17
O3 Mini
winner65.9
Rank #33/54 · confidence 1 · eval date 2025-01-31
GPT-5.4 Mini
winner87.5
Rank #34/96 · confidence 3 · eval date 2026-03-17
O3 Mini
74.8
Rank #71/96 · confidence 1 · eval date 2025-01-31
GPT-5.4 Mini
winner26.6
Rank #38/96 · confidence 3 · eval date 2026-03-17
O3 Mini
8.7
Rank #71/96 · confidence 1 · eval date 2025-01-31
GPT-5.4 Mini
winner83.3
Rank #49/84 · confidence 3 · eval date 2026-03-17
O3 Mini
28.7
Rank #74/84 · 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 Mini | O3 Mini |
|---|---|---|
Winner: GPT-5.4 Mini | GPT-5.4 Mini gpt-5.4-mini Audit score 97 10010086100 | O3 Mini o3-mini No audit yet |
Winner: GPT-5.4 Mini | GPT-5.4 Mini gpt-5.4-mini Audit score 93 1008486100 | O3 Mini o3-mini No audit yet |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GPT-5.4 Mini | O3 Mini |
|---|---|---|
6 tests | GPT-5.4 Mini speed / latency N/A / N/A input / output No data | O3 Mini speed / latency 44 tok/s / 17418ms input / output No data |
5 tests | GPT-5.4 Mini speed / latency 98 tok/s / 4039ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
5 tests | GPT-5.4 Mini speed / latency N/A / N/A input / output No data | O3 Mini speed / latency 117 tok/s / 4809ms input / output No data |
5 tests | GPT-5.4 Mini speed / latency 195 tok/s / 1104ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
5 tests | GPT-5.4 Mini speed / latency 201 tok/s / 1441ms input / output No data | O3 Mini speed / latency N/A / N/A input / output No data |
GPT-5.4 Mini gpt-5.4-mini speed / latency No data input / output $0/request | O3 Mini o3-mini-high speed / latency No data input / output $1.47/request |
Weighted outcome: GPT-5.4 Mini. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Input
Output
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
